3M Scotch-Weld Epoxy Adhesive DP420NS Black 04/13/23
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Page 1 of 2
Safety Data Sheet
Copyright,2023, 3M Company.
All rights reserved. Copying and/or downloading of this information for the purpose of properly utilizing 3M products is allowed
provided that: (1) the information is copied in full with no changes unless prior written agreement is obtained from 3M, and (2) neither
the copy nor the original is resold or otherwise distributed with the intention of earning a profit thereon.
Document Group:17-9873-5Version Number:5.04Issue Date:04/13/23Supercedes Date:11/23/22
Product identifier
3M Scotch-Weld Epoxy Adhesive DP420NS Black
ID Number(s):
62-3299-1430-3, 62-3299-1431-1, 62-3299-1435-2, 62-3299-1436-0, 62-3299-3532-4, 62-3299-3832-8
7000148267, 7000000852, 7100010680, 7100036943, 7100148758, 7010412253
Recommended use
Structural adhesive
Supplier’s details
MANUFACTURER:3MDIVISION:Industrial Adhesives and Tapes DivisionADDRESS:3M Center, St. Paul, MN 55144-1000, USATelephone:1-888-3M HELPS (1-888-364-3577)
Emergency telephone number
1-800-364-3577 or (651) 737-6501 (24 hours)
This product is a kit or a multipart product which consists of multiple, independently packaged components. A Safety Data
Sheet (SDS), Article Information Sheet (AIS), or Article Information Letter (AIL) for each of these components is included.
Please do not separate the component documents from this cover page. The document numbers for components of this
product are:
17-9844-6, 17-9858-6
DISCLAIMER: The information in this Safety Data Sheet (SDS) is believed to be correct as of the date issued. 3M MAKES NO
WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR COURSE OF PERFORMANCE OR USAGE OF
TRADE. User is responsible for determining whether the 3M product is fit for a particular purpose and suitable for user’s method of
use or application. Given the variety of factors that can affect the use and application of a 3M product, some of which are uniquely
within the user’s knowledge and control, it is essential that the user evaluate the 3M product to determine whether it is fit for a
particular purpose and suitable for user’s method of use or application.
3M provides information in electronic form as a service to its customers. Due to the remote possibility that electronic transfer may
have resulted in errors, omissions or alterations in this information, 3M makes no representations as to its completeness or accuracy.
In addition, information obtained from a database may not be as current as the information in the SDS available directly from 3M.
3M Scotch-Weld Epoxy Adhesive DP420NS Black 04/13/23
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Page 2 of 2 3M USA SDSs are available at www.3M.com
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part A or Epoxy Adhesive 420NS Black, Part A 04/13/23
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Page 1 of 11
Safety Data Sheet
Copyright,2023, 3M Company.
All rights reserved. Copying and/or downloading of this information for the purpose of properly utilizing 3M products is
allowed provided that: (1) the information is copied in full with no changes unless prior written agreement is obtained from
3M, and (2) neither the copy nor the original is resold or otherwise distributed with the intention of earning a profit thereon.
Document Group:17-9844-6Version Number:9.05Issue Date:04/13/23Supercedes Date:11/23/22
SECTION 1: Identification
1.1. Product identifier
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part A or Epoxy Adhesive 420NS Black, Part A
Product Identification Numbers
ID NumberUPCID NumberUPC62-3399-8530-100-21200-31309-762-3399-9530-00-0048011-58133-062-3399-9531-8
7000000857, 7100084536, 7100160352
1.2. Recommended use and restrictions on use
Recommended use
2-Part Epoxy Adhesive, Structural adhesive
1.3. Supplier s details
MANUFACTURER:3MDIVISION:Industrial Adhesives and Tapes DivisionADDRESS:3M Center, St. Paul, MN 55144-1000, USATelephone:1-888-3M HELPS (1-888-364-3577)
1.4. Emergency telephone number
1-800-364-3577 or (651) 737-6501 (24 hours)
SECTION 2: Hazard identification
2.1. Hazard classification
Serious Eye Damage/Irritation: Category 1.
Skin Corrosion/Irritation: Category 1B.
Skin Sensitizer: Category 1.
2.2. Label elements
Signal word
Danger
Symbols
Corrosion | Exclamation mark |
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part A or Epoxy Adhesive 420NS Black, Part A 04/13/23
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Pictograms
Hazard Statements
Causes severe skin burns and eye damage. May cause an allergic skin reaction.
Precautionary Statements
Prevention:
Do not breathe dust/fume/gas/mist/vapors/spray. Wear protective gloves, protective clothing, and eye/face protection. Wash thoroughly after handling. Contaminated work clothing must not be allowed out of the workplace.
Response:
IF INHALED: Remove person to fresh air and keep comfortable for breathing. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do.
Continue rinsing.
Immediately call a POISON CENTER or doctor/physician. If skin irritation or rash occurs: Get medical advice/attention. Wash contaminated clothing before reuse. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
Storage:
Store locked up.
Disposal:
Dispose of contents/container in accordance with applicable local/regional/national/international regulations.
2.3. Hazards not otherwise classified
May cause chemical gastrointestinal burns.
Supplemental Information:
Persons previously sensitized to amines may develop a cross-sensitization reaction to certain other amines.
SECTION 3: Composition/information on ingredients
IngredientC.A.S. No.% by WtModified Epoxy Resin NJTS. Reg. No. 04499600-5023PTrade Secret* 50 – 80 Trade Secret *4,7,10-Trioxatridecane-1,13-Diamine4246-51-9 20 – 40 Trade Secret *Amorphous Silica67762-90-7 5 – 10 Trade Secret *2,4,6-Tris((Dimethylamino)Methyl))Phenol90-72-2 1 – 5 Trade Secret *Calcium Salt55120-75-7< 3 Trade Secret *
NJTS or NJTSRN: New Jersey Trade Secret Registry Number.
*The specific chemical identity and/or exact percentage (concentration) of this composition has been withheld as a trade
secret.
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part A or Epoxy Adhesive 420NS Black, Part A 04/13/23
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SECTION 4: First aid measures
4.1. Description of first aid measures
Inhalation:
Remove person to fresh air. If you feel unwell, get medical attention.
Skin Contact:
Immediately flush with large amounts of water for at least 15 minutes. Remove contaminated clothing. Get immediate medical
attention. Wash clothing before reuse.
Eye Contact:
Immediately flush with large amounts of water for at least 15 minutes. Remove contact lenses if easy to do. Continue rinsing.
Immediately get medical attention.
If Swallowed:
Rinse mouth. Do not induce vomiting. Get immediate medical attention.
4.2. Most important symptoms and effects, both acute and delayed
Skin burns (localized redness, swelling, itching, intense pain, blistering, and tissue destruction). Allergic skin reaction (redness, swelling,
blistering, and itching). Serious damage to the eyes (corneal cloudiness, severe pain, tearing, ulcerations, and significantly impaired or loss
of vision).
4.3. Indication of any immediate medical attention and special treatment required
Not applicable
SECTION 5: Fire-fighting measures
5.1. Suitable extinguishing media
In case of fire: Use a fire fighting agent suitable for ordinary combustible material such as water or foam to extinguish.
5.2. Special hazards arising from the substance or mixture
Exposure to extreme heat can give rise to thermal decomposition.
Hazardous Decomposition or By-Products
Substance ConditionAmine CompoundsDuring CombustionCarbon monoxideDuring CombustionCarbon dioxideDuring CombustionHydrogen ChlorideDuring CombustionHydrogen FluorideDuring CombustionOxides of NitrogenDuring CombustionToxic Vapor, Gas, ParticulateDuring Combustion
5.3. Special protective actions for fire-fighters
Wear full protective clothing, including helmet, self-contained, positive pressure or pressure demand breathing apparatus,
bunker coat and pants, bands around arms, waist and legs, face mask, and protective covering for exposed areas of the head.
SECTION 6: Accidental release measures
6.1. Personal precautions, protective equipment and emergency procedures
Evacuate area. Ventilate the area with fresh air. For large spill, or spills in confined spaces, provide mechanical ventilation
to disperse or exhaust vapors, in accordance with good industrial hygiene practice. Refer to other sections of this SDS for
information regarding physical and health hazards, respiratory protection, ventilation, and personal protective equipment.
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part A or Epoxy Adhesive 420NS Black, Part A 04/13/23
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6.2. Environmental precautions
Avoid release to the environment. For larger spills, cover drains and build dikes to prevent entry into sewer systems or
bodies of water.
6.3. Methods and material for containment and cleaning up
Contain spill. Working from around the edges of the spill inward, cover with bentonite, vermiculite, or commercially
available inorganic absorbent material. Mix in sufficient absorbent until it appears dry. Remember, adding an absorbent
material does not remove a physical, health, or environmental hazard. Collect as much of the spilled material as possible.
Place in a closed container approved for transportation by appropriate authorities. Clean up residue with an appropriate
solvent selected by a qualified and authorized person. Ventilate the area with fresh air. Read and follow safety precautions
on the solvent label and SDS. Seal the container. Dispose of collected material as soon as possible in accordance with
applicable local/regional/national/international regulations.
SECTION 7: Handling and storage
7.1. Precautions for safe handling
Do not breathe thermal decomposition products. For industrial/occupational use only. Not for consumer sale or use. Do
not breathe dust/fume/gas/mist/vapors/spray. Do not get in eyes, on skin, or on clothing. Do not eat, drink or smoke when
using this product. Wash thoroughly after handling. Contaminated work clothing should not be allowed out of the
workplace. Avoid release to the environment. Wash contaminated clothing before reuse. Avoid contact with oxidizing
agents (eg. chlorine, chromic acid etc.)
7.2. Conditions for safe storage including any incompatibilities
Store away from acids. Store away from oxidizing agents.
SECTION 8: Exposure controls/personal protection
8.1. Control parameters
Occupational exposure limits
If a component is disclosed in section 3 but does not appear in the table below, an occupational exposure limit is not available
for the component.
IngredientC.A.S. No.AgencyLimit typeAdditional CommentsSILICA, AMORPHOUS67762-90-7OSHATWA:20 millions of
particles/cu. ft.;TWA
concentration:0.8 mg/m3
ACGIH : American Conference of Governmental Industrial Hygienists
AIHA : American Industrial Hygiene Association
CMRG : Chemical Manufacturer's Recommended Guidelines
OSHA : United States Department of Labor - Occupational Safety and Health Administration
TWA: Time-Weighted-Average
STEL: Short Term Exposure Limit
CEIL: Ceiling
8.2. Exposure controls
8.2.1. Engineering controls
Provide ventilated enclosure for curing. Curing enclosures must be exhausted to outdoors or to a suitable emission control
device. For those situations where the material might be exposed to extreme overheating due to misuse or equipment
failure, use with appropriate local exhaust ventilation sufficient to maintain levels of thermal decomposition products below
their exposure guidelines. Use general dilution ventilation and/or local exhaust ventilation to control airborne exposures to
below relevant Exposure Limits and/or control dust/fume/gas/mist/vapors/spray. If ventilation is not adequate, use respiratory
protection equipment.
8.2.2. Personal protective equipment (PPE)
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part A or Epoxy Adhesive 420NS Black, Part A 04/13/23
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Eye/face protection
Select and use eye/face protection to prevent contact based on the results of an exposure assessment. The following eye/face
protection(s) are recommended:
Full Face Shield
Indirect Vented Goggles
Skin/hand protection
Select and use gloves and/or protective clothing approved to relevant local standards to prevent skin contact based on the
results of an exposure assessment. Selection should be based on use factors such as exposure levels, concentration of the
substance or mixture, frequency and duration, physical challenges such as temperature extremes, and other use conditions.
Consult with your glove and/or protective clothing manufacturer for selection of appropriate compatible gloves/protective
clothing.
Gloves made from the following material(s) are recommended: Butyl Rubber
Fluoroelastomer
Nitrile Rubber
If this product is used in a manner that presents a higher potential for exposure (eg. spraying, high splash potential etc.), then
use of protective coveralls may be necessary. Select and use body protection to prevent contact based on the results of an
exposure assessment. The following protective clothing material(s) are recommended: Apron Butyl rubber
Apron Nitrile
Apron - polymer laminate
Respiratory protection
An exposure assessment may be needed to decide if a respirator is required. If a respirator is needed, use respirators as part
of a full respiratory protection program. Based on the results of the exposure assessment, select from the following
respirator type(s) to reduce inhalation exposure:
For those situations where the material might be exposed to extreme overheating due to misuse or equipment failure, use a
positive pressure supplied-air respirator.
Half facepiece or full facepiece air-purifying respirator suitable for organic vapors and particulates
For questions about suitability for a specific application, consult with your respirator manufacturer.
SECTION 9: Physical and chemical properties
9.1. Information on basic physical and chemical properties
Appearance
Physical state
Color
Liquid
Off-White
Specific Physical Form: PasteOdorSlight AmineOdor thresholdNo Data AvailablepHNot ApplicableMelting pointNo Data AvailableBoiling Point> 340 FFlash Point>=340 F [Test Method:Tagliabue Closed Cup]Evaporation rateNot ApplicableFlammability (solid, gas)Not ApplicableFlammable Limits(LEL)No Data AvailableFlammable Limits(UEL)No Data AvailableVapor Pressure<=27 psia [@ 131 F]Vapor Density3.72 [Ref Std:AIR=1]Density1.15 g/ml
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part A or Epoxy Adhesive 420NS Black, Part A 04/13/23
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Specific Gravity1.15 [Ref Std:WATER=1]Solubility in WaterSlight (less than 10%)Solubility- non-waterNo Data AvailablePartition coefficient: n-octanol/ waterNo Data AvailableAutoignition temperatureNo Data AvailableDecomposition temperatureNo Data AvailableViscosity8,000 - 10,000 centipoise [@ 73 F ]Hazardous Air Pollutants0 % weight [Test Method: Calculated]Molecular weightNo Data AvailableVOC Less H2O & Exempt Solvents0 g/l [Test Method:calculated SCAQMD rule 443.1]
[Details:when used as intended with Part B]
VOC Less H2O & Exempt Solvents0 g/l [Test Method:calculated SCAQMD rule 443.1] [ Details:as
supplied]
VOC Less H2O & Exempt Solvents0 % [Test Method:calculated SCAQMD rule 443.1]
[Details:when used as intended with Part B]
SECTION 10: Stability and reactivity
10.1. Reactivity
This material may be reactive with certain agents under certain conditions - see the remaining headings in this section.
10.2. Chemical stability
Stable.
10.3. Possibility of hazardous reactions
Hazardous polymerization will not occur.
10.4. Conditions to avoid
Heat is generated during cure. Do not cure a mass larger than 50 grams in a confined space to prevent a premature exothermic
reaction with production of intense heat and smoke.
10.5. Incompatible materials
Strong oxidizing agents
10.6. Hazardous decomposition products
SubstanceCondition None known.
Refer to section 5.2 for hazardous decomposition products during combustion.
Extreme heat arising from situations such as misuse or equipment failure can generate hydrogen fluoride as a decomposition
product.
SECTION 11: Toxicological information
The information below may not be consistent with the material classification in Section 2 if specific ingredient
classifications are mandated by a competent authority. In addition, toxicological data on ingredients may not be
reflected in the material classification and/or the signs and symptoms of exposure, because an ingredient may be
present below the threshold for labeling, an ingredient may not be available for exposure, or the data may not be
relevant to the material as a whole.
11.1. Information on Toxicological effects
Signs and Symptoms of Exposure
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part A or Epoxy Adhesive 420NS Black, Part A 04/13/23
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Based on test data and/or information on the components, this material may produce the following health effects:
Inhalation:
Respiratory Tract Irritation: Signs/symptoms may include cough, sneezing, nasal discharge, headache, hoarseness, and nose
and throat pain.
Skin Contact:
Corrosive (Skin Burns): Signs/symptoms may include localized redness, swelling, itching, intense pain, blistering, ulceration,
and tissue destruction.
Allergic Skin Reaction (non-photo induced): Signs/symptoms may include redness, swelling, blistering, and itching.
Eye Contact:
Corrosive (Eye Burns): Signs/symptoms may include cloudy appearance of the cornea, chemical burns, severe pain, tearing,
ulcerations, significantly impaired vision or complete loss of vision.
Ingestion:
Gastrointestinal Corrosion: Signs/symptoms may include severe mouth, throat and abdominal pain; nausea; vomiting; and
diarrhea; blood in the feces and/or vomitus may also be seen.
Additional Information:
Persons previously sensitized to amines may develop a cross-sensitization reaction to certain other amines.
Toxicological Data
If a component is disclosed in section 3 but does not appear in a table below, either no data are available for that endpoint or
the data are not sufficient for classification.
Acute Toxicity
NameRouteSpeciesValueOverall productDermalNo data available; calculated ATE >5,000 mg/kgOverall productIngestionNo data available; calculated ATE >5,000 mg/kg4,7,10-Trioxatridecane-1,13-DiamineDermalRabbitLD50 2,525 mg/kg4,7,10-Trioxatridecane-1,13-DiamineIngestionRatLD50 2,850 mg/kgAmorphous SilicaDermalRabbitLD50 > 5,000 mg/kgAmorphous SilicaInhalation-
Dust/Mist
(4 hours)
RatLC50 > 0.691 mg/lAmorphous SilicaIngestionRatLD50 > 5,110 mg/kg2,4,6-Tris((Dimethylamino)Methyl))PhenolDermalRatLD50 1,280 mg/kg2,4,6-Tris((Dimethylamino)Methyl))PhenolIngestionRatLD50 1,000 mg/kgCalcium SaltDermalProfessio
nal
judgeme
nt
LD50 estimated to be 2,000 – 5,000 mg/kgCalcium SaltIngestionRatLD50 > 2,000 mg/kg
ATE = acute toxicity estimate
Skin Corrosion/Irritation
NameSpeciesValue4,7,10-Trioxatridecane-1,13-DiamineRabbitCorrosiveAmorphous SilicaRabbitNo significant irritation2,4,6-Tris((Dimethylamino)Methyl))PhenolRabbitCorrosiveCalcium SaltRabbitMinimal irritation
Serious Eye Damage/Irritation
NameSpeciesValue4,7,10-Trioxatridecane-1,13-DiamineRabbitCorrosive
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part A or Epoxy Adhesive 420NS Black, Part A 04/13/23
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Amorphous SilicaRabbitNo significant irritation2,4,6-Tris((Dimethylamino)Methyl))PhenolRabbitCorrosiveCalcium SaltRabbitCorrosive
Skin Sensitization
NameSpeciesValue4,7,10-Trioxatridecane-1,13-DiamineProfessio
nal
judgeme
nt
SensitizingAmorphous SilicaHuman
and
animal
Not classified2,4,6-Tris((Dimethylamino)Methyl))PhenolGuinea
pig
Not classifiedCalcium SaltGuinea
pig
Not classified
Respiratory Sensitization
For the component/components, either no data are currently available or the data are not sufficient for classification.
Germ Cell Mutagenicity
NameRouteValue4,7,10-Trioxatridecane-1,13-DiamineIn VitroNot mutagenicAmorphous SilicaIn VitroNot mutagenic2,4,6-Tris((Dimethylamino)Methyl))PhenolIn VitroNot mutagenicCalcium SaltIn VitroNot mutagenic
Carcinogenicity
NameRouteSpeciesValueAmorphous SilicaNot
Specified
MouseSome positive data exist, but the data are not
sufficient for classification
Reproductive Toxicity
Reproductive and/or Developmental Effects
NameRouteValueSpeciesTest Result Exposure
Duration
4,7,10-Trioxatridecane-1,13-DiamineIngestionNot classified for female reproductionRatNOAEL 600
mg/kg/day
premating
into lactation
4,7,10-Trioxatridecane-1,13-DiamineIngestionNot classified for male reproductionRatNOAEL 600
mg/kg/day
59 days4,7,10-Trioxatridecane-1,13-DiamineIngestionNot classified for developmentRatNOAEL 600
mg/kg/day
premating
into lactation
Amorphous SilicaIngestionNot classified for female reproductionRatNOAEL 509
mg/kg/day
1 generationAmorphous SilicaIngestionNot classified for male reproductionRatNOAEL 497
mg/kg/day
1 generationAmorphous SilicaIngestionNot classified for developmentRatNOAEL 1,350
mg/kg/day
during
organogenesi
s
Target Organ(s)
Specific Target Organ Toxicity – single exposure
NameRouteTarget Organ(s)ValueSpeciesTest Result Exposure
Duration
4,7,10-Trioxatridecane-
1,13-Diamine
Inhalationrespiratory irritationSome positive data exist, but the
data are not sufficient for
classification
similar
health
hazards
NOAEL Not
available
2,4,6-Inhalationrespiratory irritationSome positive data exist, but the NOAEL Not
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part A or Epoxy Adhesive 420NS Black, Part A 04/13/23
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Tris((Dimethylamino)Meth
yl))Phenol
data are not sufficient for
classification
available Calcium SaltInhalationrespiratory irritationSome positive data exist, but the
data are not sufficient for
classification
similar
health
hazards
NOAEL not
available
Specific Target Organ Toxicity – repeated exposure
NameRouteTarget Organ(s)ValueSpeciesTest Result Exposure
Duration
4,7,10-Trioxatridecane-
1,13-Diamine
Ingestiongastrointestinal tract
| heart | endocrine
system | bone, teeth,
nails, and/or hair |
hematopoietic
system | liver |
immune system |
muscles | nervous
system | eyes |
kidney and/or
bladder | respiratory
system | vascular
system
Not classifiedRatNOAEL 600
mg/kg/day
59 daysAmorphous SilicaInhalationrespiratory system |
silicosis
Not classifiedHumanNOAEL Not
available
occupational
exposure
2,4,6-
Tris((Dimethylamino)Meth
yl))Phenol
Dermalskin | liver | nervous
system | auditory
system |
hematopoietic
system | eyes
Not classifiedRatNOAEL 125
mg/kg/day
28 days
Aspiration Hazard
For the component/components, either no data are currently available or the data are not sufficient for classification.
Please contact the address or phone number listed on the first page of the SDS for additional toxicological information
on this material and/or its components.
SECTION 12: Ecological information
Ecotoxicological information
Please contact the address or phone number listed on the first page of the SDS for additional ecotoxicological information on this material
and/or its components.
Chemical fate information
Please contact the address or phone number listed on the first page of the SDS for additional chemical fate information on this material
and/or its components.
SECTION 13: Disposal considerations
13.1. Disposal methods
Dispose of contents/ container in accordance with the local/regional/national/international regulations.
Dispose of completely cured (or polymerized) material in a permitted industrial waste facility. As a disposal alternative,
incinerate uncured product in a permitted waste incineration facility. Proper destruction may require the use of additional fuel
during incineration processes. Combustion products will include halogen acid (HCl/HF/HBr). Facility must be capable of
handling halogenated materials. Empty drums/barrels/containers used for transporting and handling hazardous chemicals
(chemical substances/mixtures/preparations classified as Hazardous as per applicable regulations) shall be considered,
stored, treated & disposed of as hazardous wastes unless otherwise defined by applicable waste regulations. Consult with the
respective regulating authorities to determine the available treatment and disposal facilities.
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part A or Epoxy Adhesive 420NS Black, Part A 04/13/23
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EPA Hazardous Waste Number (RCRA): Not regulated
SECTION 14: Transport Information
For Transport Information, please visit http://3M.com/Transportinfo or call 1-800-364-3577 or 651-737-6501.
SECTION 15: Regulatory information
15.1. US Federal Regulations
Contact 3M for more information.
EPCRA 311/312 Hazard Classifications:
Physical HazardsNot applicableHealth HazardsHazard Not Otherwise Classified (HNOC)Respiratory or Skin SensitizationSerious eye damage or eye irritationSkin Corrosion or Irritation
15.2. State Regulations
Contact 3M for more information.
15.3. Chemical Inventories
The components of this product are in compliance with the chemical notification requirements of TSCA. All required
components of this product are listed on the active portion of the TSCA Inventory.
Contact 3M for more information.
15.4. International Regulations
Contact 3M for more information.
This SDS has been prepared to meet the U.S. OSHA Hazard Communication Standard, 29 CFR 1910.1200.
SECTION 16: Other information
NFPA Hazard Classification
Health: 3 Flammability: 1 Instability: 0 Special Hazards: None
National Fire Protection Association (NFPA) hazard ratings are designed for use by emergency response personnel to address
the hazards that are presented by short-term, acute exposure to a material under conditions of fire, spill, or similar
emergencies. Hazard ratings are primarily based on the inherent physical and toxic properties of the material but also include
the toxic properties of combustion or decomposition products that are known to be generated in significant quantities.
Document Group:17-9844-6Version Number:9.05Issue Date:04/13/23Supercedes Date:11/23/22
DISCLAIMER: The information in this Safety Data Sheet (SDS) is believed to be correct as of the date issued. 3M MAKES
NO WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR COURSE OF PERFORMANCE OR
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part A or Epoxy Adhesive 420NS Black, Part A 04/13/23
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USAGE OF TRADE. User is responsible for determining whether the 3M product is fit for a particular purpose and suitable
for user’s method of use or application. Given the variety of factors that can affect the use and application of a 3M product,
some of which are uniquely within the user’s knowledge and control, it is essential that the user evaluate the 3M product to
determine whether it is fit for a particular purpose and suitable for user’s method of use or application.
3M provides information in electronic form as a service to its customers. Due to the remote possibility that electronic transfer
may have resulted in errors, omissions or alterations in this information, 3M makes no representations as to its completeness
or accuracy. In addition, information obtained from a database may not be as current as the information in the SDS available
directly from 3M.
3M USA SDSs are available at www.3M.com
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part B or Epoxy Adhesive 420NS Black, Part B 11/23/22
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Page 1 of 10
Safety Data Sheet
Copyright,2022, 3M Company.
All rights reserved. Copying and/or downloading of this information for the purpose of properly utilizing 3M products is
allowed provided that: (1) the information is copied in full with no changes unless prior written agreement is obtained from
3M, and (2) neither the copy nor the original is resold or otherwise distributed with the intention of earning a profit thereon.
Document Group:17-9858-6Version Number:9.03Issue Date:11/23/22Supercedes Date:10/18/21
SECTION 1: Identification
1.1. Product identifier
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part B or Epoxy Adhesive 420NS Black, Part B
Product Identification Numbers
ID NumberUPCID NumberUPC62-3299-8535-2500-21200-56587-362-3299-9530-20-0048011-58132-362-3299-9531-0
7100160334, 7000000853, 7100084537
1.2. Recommended use and restrictions on use
Recommended use
2-Part Epoxy Adhesive, Structural adhesive
1.3. Supplier s details
MANUFACTURER:3MDIVISION:Industrial Adhesives and Tapes DivisionADDRESS:3M Center, St. Paul, MN 55144-1000, USATelephone:1-888-3M HELPS (1-888-364-3577)
1.4. Emergency telephone number
1-800-364-3577 or (651) 737-6501 (24 hours)
SECTION 2: Hazard identification
2.1. Hazard classification
Serious Eye Damage/Irritation: Category 2B.
Skin Sensitizer: Category 1.
2.2. Label elements
Signal word
Warning
Symbols
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3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part B or Epoxy Adhesive 420NS Black, Part B 11/23/22
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Hazard Statements
Causes eye irritation. May cause an allergic skin reaction.
Precautionary Statements
Prevention:
Avoid breathing dust/fume/gas/mist/vapors/spray. Wear protective gloves. Wash thoroughly after handling. Contaminated work clothing must not be allowed out of the workplace.
Response:
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do.
Continue rinsing.
If eye irritation persists: Get medical advice/attention. IF ON SKIN: Wash with plenty of soap and water. If skin irritation or rash occurs: Get medical advice/attention. Wash contaminated clothing before reuse.
Disposal:
Dispose of contents/container in accordance with applicable local/regional/national/international regulations.
SECTION 3: Composition/information on ingredients
IngredientC.A.S. No.% by WtEpoxy Resin25068-38-6 75 – 98 Trade Secret *Acrylic Polymer (NJTS Reg. No. 04499600-5018P)Trade Secret* 1 – 20 Trade Secret *Amorphous Silica67762-90-7 1 – 5 Trade Secret *Carbon Black1333-86-4<= 0.1 Trade Secret *
NJTS or NJTSRN: New Jersey Trade Secret Registry Number.
*The specific chemical identity and/or exact percentage (concentration) of this composition has been withheld as a trade
secret.
SECTION 4: First aid measures
4.1. Description of first aid measures
Inhalation:
Remove person to fresh air. If you feel unwell, get medical attention.
Skin Contact:
Immediately wash with soap and water. Remove contaminated clothing and wash before reuse. If signs/symptoms develop, get
medical attention.
Eye Contact:
Flush with large amounts of water. Remove contact lenses if easy to do. Continue rinsing. If signs/symptoms persist, get medical
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part B or Epoxy Adhesive 420NS Black, Part B 11/23/22
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attention.
If Swallowed:
Rinse mouth. If you feel unwell, get medical attention.
4.2. Most important symptoms and effects, both acute and delayed
Allergic skin reaction (redness, swelling, blistering, and itching).
4.3. Indication of any immediate medical attention and special treatment required
Not applicable
SECTION 5: Fire-fighting measures
5.1. Suitable extinguishing media
In case of fire: Use a fire fighting agent suitable for ordinary combustible material such as water or foam to extinguish.
5.2. Special hazards arising from the substance or mixture
None inherent in this product.
Hazardous Decomposition or By-Products
Substance ConditionAldehydesDuring CombustionCarbon monoxideDuring CombustionCarbon dioxideDuring CombustionHydrogen ChlorideDuring CombustionIrritant Vapors or GasesDuring Combustion
5.3. Special protective actions for fire-fighters
Wear full protective clothing, including helmet, self-contained, positive pressure or pressure demand breathing apparatus,
bunker coat and pants, bands around arms, waist and legs, face mask, and protective covering for exposed areas of the head.
SECTION 6: Accidental release measures
6.1. Personal precautions, protective equipment and emergency procedures
Evacuate area. Ventilate the area with fresh air. For large spill, or spills in confined spaces, provide mechanical ventilation
to disperse or exhaust vapors, in accordance with good industrial hygiene practice. Refer to other sections of this SDS for
information regarding physical and health hazards, respiratory protection, ventilation, and personal protective equipment.
6.2. Environmental precautions
Avoid release to the environment. For larger spills, cover drains and build dikes to prevent entry into sewer systems or
bodies of water.
6.3. Methods and material for containment and cleaning up
Contain spill. Working from around the edges of the spill inward, cover with bentonite, vermiculite, or commercially
available inorganic absorbent material. Mix in sufficient absorbent until it appears dry. Remember, adding an absorbent
material does not remove a physical, health, or environmental hazard. Collect as much of the spilled material as possible.
Place in a closed container approved for transportation by appropriate authorities. Clean up residue with an appropriate
solvent selected by a qualified and authorized person. Ventilate the area with fresh air. Read and follow safety precautions
on the solvent label and SDS. Seal the container. Dispose of collected material as soon as possible in accordance with
applicable local/regional/national/international regulations.
SECTION 7: Handling and storage
7.1. Precautions for safe handling
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part B or Epoxy Adhesive 420NS Black, Part B 11/23/22
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For industrial/occupational use only. Not for consumer sale or use. Avoid breathing dust/fume/gas/mist/vapors/spray.
Do not get in eyes, on skin, or on clothing. Do not eat, drink or smoke when using this product. Wash thoroughly after
handling. Contaminated work clothing should not be allowed out of the workplace. Avoid release to the environment.
Wash contaminated clothing before reuse. Avoid contact with oxidizing agents (eg. chlorine, chromic acid etc.)
7.2. Conditions for safe storage including any incompatibilities
Store away from heat. Store away from oxidizing agents.
SECTION 8: Exposure controls/personal protection
8.1. Control parameters
Occupational exposure limits
If a component is disclosed in section 3 but does not appear in the table below, an occupational exposure limit is not available
for the component.
IngredientC.A.S. No.AgencyLimit typeAdditional CommentsCarbon Black1333-86-4ACGIHTWA(inhalable fraction):3
mg/m3
A3: Confirmed animal
carcin.
Carbon Black1333-86-4OSHATWA:3.5 mg/m3SILICA, AMORPHOUS67762-90-7OSHATWA:20 millions of
particles/cu. ft.;TWA
concentration:0.8 mg/m3
ACGIH : American Conference of Governmental Industrial Hygienists
AIHA : American Industrial Hygiene Association
CMRG : Chemical Manufacturer's Recommended Guidelines
OSHA : United States Department of Labor - Occupational Safety and Health Administration
TWA: Time-Weighted-Average
STEL: Short Term Exposure Limit
CEIL: Ceiling
8.2. Exposure controls
8.2.1. Engineering controls
Use general dilution ventilation and/or local exhaust ventilation to control airborne exposures to below relevant Exposure
Limits and/or control dust/fume/gas/mist/vapors/spray. If ventilation is not adequate, use respiratory protection equipment.
8.2.2. Personal protective equipment (PPE)
Eye/face protection
Select and use eye/face protection to prevent contact based on the results of an exposure assessment. The following eye/face
protection(s) are recommended:
Safety Glasses with side shields
Indirect Vented Goggles
Skin/hand protection
Select and use gloves and/or protective clothing approved to relevant local standards to prevent skin contact based on the
results of an exposure assessment. Selection should be based on use factors such as exposure levels, concentration of the
substance or mixture, frequency and duration, physical challenges such as temperature extremes, and other use conditions.
Consult with your glove and/or protective clothing manufacturer for selection of appropriate compatible gloves/protective
clothing. Note: Nitrile gloves may be worn over polymer laminate gloves to improve dexterity.
Gloves made from the following material(s) are recommended: Polymer laminate
If this product is used in a manner that presents a higher potential for exposure (eg. spraying, high splash potential etc.), then
use of protective coveralls may be necessary. Select and use body protection to prevent contact based on the results of an
exposure assessment. The following protective clothing material(s) are recommended: Apron - polymer laminate
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part B or Epoxy Adhesive 420NS Black, Part B 11/23/22
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Respiratory protection
None required.
SECTION 9: Physical and chemical properties
9.1. Information on basic physical and chemical properties
Appearance
Physical state
Color
Liquid
Black
Specific Physical Form: PasteOdorEpoxyOdor thresholdNo Data AvailablepHNot ApplicableMelting pointNot ApplicableBoiling Point> 250 FFlash Point250 FEvaporation rateNot ApplicableFlammability (solid, gas)Not ApplicableFlammable Limits(LEL)No Data AvailableFlammable Limits(UEL)No Data AvailableVapor PressureNot ApplicableVapor DensityNot ApplicableDensity1.1 g/mlSpecific Gravity0.97 – 1.1 [Ref Std:WATER=1]Solubility in WaterNilSolubility- non-waterNo Data AvailablePartition coefficient: n-octanol/ waterNo Data AvailableAutoignition temperatureNo Data AvailableDecomposition temperatureNo Data AvailableViscosity60,000 – 100,000 centipoiseHazardous Air Pollutants0 % weight [Test Method: Calculated]Hazardous Air Pollutants0 lb HAPS/gal [Test Method: Calculated]Molecular weightNo Data AvailableVOC Less H2O & Exempt Solvents0 g/l [Test Method:calculated SCAQMD rule 443.1]
[Details:when used as intended with Part A]
VOC Less H2O & Exempt Solvents6 g/l [Test Method:calculated SCAQMD rule 443.1] [ Details:as
supplied]
VOC Less H2O & Exempt Solvents0 % [Test Method:calculated SCAQMD rule 443.1]
[Details:when used as intended with Part A]
SECTION 10: Stability and reactivity
10.1. Reactivity
This material may be reactive with certain agents under certain conditions – see the remaining headings in this section.
10.2. Chemical stability
Stable.
10.3. Possibility of hazardous reactions
Hazardous polymerization will not occur.
10.4. Conditions to avoid
Heat
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part B or Epoxy Adhesive 420NS Black, Part B 11/23/22
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Heat is generated during cure. Do not cure a mass larger than 50 grams in a confined space to prevent a premature exothermic
reaction with production of intense heat and smoke.
10.5. Incompatible materials
Strong oxidizing agents
10.6. Hazardous decomposition products
SubstanceCondition None known.
Refer to section 5.2 for hazardous decomposition products during combustion.
SECTION 11: Toxicological information
The information below may not be consistent with the material classification in Section 2 if specific ingredient
classifications are mandated by a competent authority. In addition, toxicological data on ingredients may not be
reflected in the material classification and/or the signs and symptoms of exposure, because an ingredient may be
present below the threshold for labeling, an ingredient may not be available for exposure, or the data may not be
relevant to the material as a whole.
11.1. Information on Toxicological effects
Signs and Symptoms of Exposure
Based on test data and/or information on the components, this material may produce the following health effects:
Inhalation:
No health effects are expected.
Skin Contact:
Mild Skin Irritation: Signs/symptoms may include localized redness, swelling, itching, and dryness. Allergic Skin Reaction
(non-photo induced): Signs/symptoms may include redness, swelling, blistering, and itching.
Eye Contact:
Moderate Eye Irritation: Signs/symptoms may include redness, swelling, pain, tearing, and blurred or hazy vision.
Ingestion:
Gastrointestinal Irritation: Signs/symptoms may include abdominal pain, stomach upset, nausea, vomiting and diarrhea.
Carcinogenicity:
IngredientCAS No.Class DescriptionRegulationCarbon black1333-86-4Grp. 2B: Possible human carc.International Agency for Research on Cancer
Toxicological Data
If a component is disclosed in section 3 but does not appear in a table below, either no data are available for that endpoint or
the data are not sufficient for classification.
Acute Toxicity
NameRouteSpeciesValueOverall productIngestionNo data available; calculated ATE >5,000 mg/kgEpoxy ResinDermalRatLD50 > 1,600 mg/kgEpoxy ResinIngestionRatLD50 > 1,000 mg/kgAcrylic Polymer (NJTS Reg. No. 04499600-5018P)DermalRabbitLD50 > 5,000 mg/kgAcrylic Polymer (NJTS Reg. No. 04499600-5018P)IngestionRatLD50 > 5,000 mg/kgAmorphous SilicaDermalRabbitLD50 > 5,000 mg/kg
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part B or Epoxy Adhesive 420NS Black, Part B 11/23/22
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Amorphous SilicaInhalation-
Dust/Mist
(4 hours)
RatLC50 > 0.691 mg/lAmorphous SilicaIngestionRatLD50 > 5,110 mg/kgCarbon BlackDermalRabbitLD50 > 3,000 mg/kgCarbon BlackIngestionRatLD50 > 8,000 mg/kg
ATE = acute toxicity estimate
Skin Corrosion/Irritation
NameSpeciesValueEpoxy ResinRabbitMild irritantAcrylic Polymer (NJTS Reg. No. 04499600-5018P)Professio
nal
judgeme
nt
Minimal irritationAmorphous SilicaRabbitNo significant irritationCarbon BlackRabbitNo significant irritation
Serious Eye Damage/Irritation
NameSpeciesValueEpoxy ResinRabbitModerate irritantAcrylic Polymer (NJTS Reg. No. 04499600-5018P)Professio
nal
judgeme
nt
Mild irritantAmorphous SilicaRabbitNo significant irritationCarbon BlackRabbitNo significant irritation
Skin Sensitization
NameSpeciesValueEpoxy ResinHuman
and
animal
SensitizingAmorphous SilicaHuman
and
animal
Not classified
Respiratory Sensitization
NameSpeciesValueEpoxy ResinHumanNot classified
Germ Cell Mutagenicity
NameRouteValueEpoxy ResinIn vivoNot mutagenicEpoxy ResinIn VitroSome positive data exist, but the data are not
sufficient for classification
Amorphous SilicaIn VitroNot mutagenicCarbon BlackIn VitroNot mutagenicCarbon BlackIn vivoSome positive data exist, but the data are not
sufficient for classification
Carcinogenicity
NameRouteSpeciesValueEpoxy ResinDermalMouseSome positive data exist, but the data are not
sufficient for classification
Amorphous SilicaNot
Specified
MouseSome positive data exist, but the data are not
sufficient for classification
Carbon BlackDermalMouseNot carcinogenic
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part B or Epoxy Adhesive 420NS Black, Part B 11/23/22
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Carbon BlackIngestionMouseNot carcinogenicCarbon BlackInhalationRatCarcinogenic
Reproductive Toxicity
Reproductive and/or Developmental Effects
NameRouteValueSpeciesTest Result Exposure
Duration
Epoxy ResinIngestionNot classified for female reproductionRatNOAEL 750
mg/kg/day
2 generationEpoxy ResinIngestionNot classified for male reproductionRatNOAEL 750
mg/kg/day
2 generationEpoxy ResinDermalNot classified for developmentRabbitNOAEL 300
mg/kg/day
during
organogenesi
s
Epoxy ResinIngestionNot classified for developmentRatNOAEL 750
mg/kg/day
2 generationAmorphous SilicaIngestionNot classified for female reproductionRatNOAEL 509
mg/kg/day
1 generationAmorphous SilicaIngestionNot classified for male reproductionRatNOAEL 497
mg/kg/day
1 generationAmorphous SilicaIngestionNot classified for developmentRatNOAEL 1,350
mg/kg/day
during
organogenesi
s
Target Organ(s)
Specific Target Organ Toxicity – single exposure
For the component/components, either no data are currently available or the data are not sufficient for classification.
Specific Target Organ Toxicity – repeated exposure
NameRouteTarget Organ(s)ValueSpeciesTest Result Exposure
Duration
Epoxy ResinDermalliverNot classifiedRatNOAEL
1,000
mg/kg/day
2 yearsEpoxy ResinDermalnervous systemNot classifiedRatNOAEL
1,000
mg/kg/day
13 weeksEpoxy ResinIngestionauditory system |
heart | endocrine
system |
hematopoietic
system | liver | eyes |
kidney and/or
bladder
Not classifiedRatNOAEL
1,000
mg/kg/day
28 daysAmorphous SilicaInhalationrespiratory system |
silicosis
Not classifiedHumanNOAEL Not
available
occupational
exposure
Carbon BlackInhalationpneumoconiosisNot classifiedHumanNOAEL Not
available
occupational
exposure
Aspiration Hazard
For the component/components, either no data are currently available or the data are not sufficient for classification.
Please contact the address or phone number listed on the first page of the SDS for additional toxicological information
on this material and/or its components.
SECTION 12: Ecological information
Ecotoxicological information
Please contact the address or phone number listed on the first page of the SDS for additional ecotoxicological information on this material
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part B or Epoxy Adhesive 420NS Black, Part B 11/23/22
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and/or its components.
Chemical fate information
Please contact the address or phone number listed on the first page of the SDS for additional chemical fate information on this material
and/or its components.
SECTION 13: Disposal considerations
13.1. Disposal methods
Dispose of contents/ container in accordance with the local/regional/national/international regulations.
Dispose of completely cured (or polymerized) material in a permitted industrial waste facility. As a disposal alternative,
incinerate uncured product in a permitted waste incineration facility. Proper destruction may require the use of additional fuel
during incineration processes. Combustion products will include halogen acid (HCl/HF/HBr). Facility must be capable of
handling halogenated materials. Empty drums/barrels/containers used for transporting and handling hazardous chemicals
(chemical substances/mixtures/preparations classified as Hazardous as per applicable regulations) shall be considered,
stored, treated & disposed of as hazardous wastes unless otherwise defined by applicable waste regulations. Consult with the
respective regulating authorities to determine the available treatment and disposal facilities.
EPA Hazardous Waste Number (RCRA): Not regulated
SECTION 14: Transport Information
For Transport Information, please visit http://3M.com/Transportinfo or call 1-800-364-3577 or 651-737-6501.
SECTION 15: Regulatory information
15.1. US Federal Regulations
Contact 3M for more information.
EPCRA 311/312 Hazard Classifications:
Physical HazardsNot applicableHealth HazardsRespiratory or Skin SensitizationSerious eye damage or eye irritation
15.2. State Regulations
Contact 3M for more information.
15.3. Chemical Inventories
The components of this product are in compliance with the chemical notification requirements of TSCA. All required
components of this product are listed on the active portion of the TSCA Inventory.
Contact 3M for more information.
15.4. International Regulations
Contact 3M for more information.
This SDS has been prepared to meet the U.S. OSHA Hazard Communication Standard, 29 CFR 1910.1200.
3M Scotch-Weld Epoxy Adhesive DP420NS Black, Part B or Epoxy Adhesive 420NS Black, Part B 11/23/22
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SECTION 16: Other information
NFPA Hazard Classification
Health: 2 Flammability: 1 Instability: 0 Special Hazards: None
National Fire Protection Association (NFPA) hazard ratings are designed for use by emergency response personnel to address
the hazards that are presented by short-term, acute exposure to a material under conditions of fire, spill, or similar
emergencies. Hazard ratings are primarily based on the inherent physical and toxic properties of the material but also include
the toxic properties of combustion or decomposition products that are known to be generated in significant quantities.
HMIS Hazard Classification
Health: 2 Flammability: 1 Physical Hazard: 0 Personal Protection: X – See PPE section.
Hazardous Material Identification System (HMIS IV) hazard ratings are designed to inform employees of chemical hazards
in the workplace. These ratings are based on the inherent properties of the material under expected conditions of normal use
and are not intended for use in emergency situations. HMIS IV ratings are to be used with a fully implemented HMIS IV
program. HMIS is a registered mark of the American Coatings Association (ACA).
Document Group:17-9858-6Version Number:9.03Issue Date:11/23/22Supercedes Date:10/18/21
DISCLAIMER: The information in this Safety Data Sheet (SDS) is believed to be correct as of the date issued. 3M MAKES
NO WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR COURSE OF PERFORMANCE OR
USAGE OF TRADE. User is responsible for determining whether the 3M product is fit for a particular purpose and suitable
for user’s method of use or application. Given the variety of factors that can affect the use and application of a 3M product,
some of which are uniquely within the user’s knowledge and control, it is essential that the user evaluate the 3M product to
determine whether it is fit for a particular purpose and suitable for user’s method of use or application.
3M provides information in electronic form as a service to its customers. Due to the remote possibility that electronic transfer
may have resulted in errors, omissions or alterations in this information, 3M makes no representations as to its completeness
or accuracy. In addition, information obtained from a database may not be as current as the information in the SDS available
directly from 3M.
3M USA SDSs are available at www.3M.com