SAFETY DATA SHEET
This safety data sheet was created pursuant to the requirements of:
2012 OSHA Hazard Communication Standard (29 CFR 1910.1200)
Canada Hazardous Products Regulations (SOR/2015-17)
Revision date 05-Aug-2022 Revision Number 3
1. Identification
Product identifier
Product Name CAB-O-SIL M-5 Untreated Fumed Silica
Other means of identification
Product Code(s) M5
Synonyms Silicon Dioxide, Synthetic Amorphous Silica, Pyrogenic (Fumed) Amorphous Silica
Recommended use of the chemical and restrictions on use
Recommended use Various, Rheological control, Flow agent, Anti-caking agent, Anti-blocking agent, Anti-settling agent,
Spray aid, Thickening agent, Carrier, Viscosity control agent, Glossing or matting agent, Chemical
intermediate, Stabilization agent, Filler, Reinforcing agent in: Coatings, Adhesives and/or sealants,
Silicone Elastomer, Rubber products, suspension, dispersion, Batteries, Cosmetics, Inks and toners,
Paints, Hygiene and sanitary products, Other
Restrictions on use None known.
Details of the supplier of the safety data sheet
Emergency telephone number
Emergency Telephone US: CHEMTREC : 1-800-424-9300 or +1-703-527-3887
International CHEMTREC: +1 703-741-5970 or +1-703-527-3887
2. Hazard(s) identification
Classification
This product is not considered hazardous by either the US 2012 OSHA Hazard Communication Standard (29 CFR 1910.1200) or the Canadian
Workplace Hazardous Material Information System (WHMIS 2015)
Label elements
Signal word
None
Hazard statements
None
Cabot Business & Technology Center
157 Concord Road
Billerica, Massachusetts
01821
United States
Tel: +1 978 663 3455
Fax: +1 978 663 5471
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Cabot Corporation
4400 North Point Parkway
Suite 200
Alpharetta, Georgia
30022
United States
Tel: +1 678 297 1300
Fax: +1 678 297 1245
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M5 – CAB-O-SIL M-5 Untreated Fumed Silica Revision date 05-Aug-2022
Precautionary statements
None
Other information
May cause mechanical irritation. Dust may be irritating to respiratory tract.
3. Composition/information on ingredients
Substance
Synonyms Silicon Dioxide, Synthetic Amorphous Silica, Pyrogenic (Fumed) Amorphous Silica
Chemical name CAS No Weight-% Hazardous Material
Information Review Act
registry number (HMIRA
registry #)
Date HMIRA filed and
date exemption granted
(if applicable)
Synthetic Amorphous, Pyrogenic Silica 112945-52-5 > 99.9 – –
Additional information
Regulatory information is found under the general silica: CAS RN 7631-86-9
The hyphen (-) means “not applicable”.
4. First-aid measures
Description of first aid measures
Inhalation If cough, shortness of breath or other breathing problems occur, move to fresh air. Seek medical
attention if symptoms persist. If necessary, restore normal breathing through standard first aid
measures.
Eye contact In case of eye contact, immediately flush eyes with plenty of water for at least 15 minutes. Get
medical attention if symptoms occur.
Skin contact Wash skin with soap and water. Get medical attention if symptoms occur.
Ingestion Do NOT induce vomiting. Rinse mouth thoroughly with water. Never give anything by mouth to an
unconscious person.
Most important symptoms and effects, both acute and delayed
Symptoms See Section 11 for additional Toxicological Information.
Indication of any immediate medical attention and special treatment needed
Note to physicians Treat symptomatically.
5. Fire-fighting measures
Suitable Extinguishing Media Silica is non-combustible, therefore no extinguishing media needs to be identified.
Unsuitable extinguishing media None.
Specific hazards arising from the chemical None.
Hazardous combustion products None
Explosion data
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M5 – CAB-O-SIL M-5 Untreated Fumed Silica Revision date 05-Aug-2022
Sensitivity to mechanical impact None.
Sensitivity to static discharge This material is an inorganic dust and will not create nor support conditions that would result in a
dust explosion or fire. Take precautionary measures against static discharges. Avoid generation of
dust. All metal parts of the mixing and processing equipment must be earthed/grounded. Ensure all
equipment is electrically earthed/grounded before beginning transfer operations.
Special protective equipment and
precautions for fire-fighters
In case of fire: Wear self-contained breathing apparatus. Use personal protection equipment.
6. Accidental release measures
Personal precautions, protective equipment and emergency procedures
Personal precautions Avoid generation of dust. Ensure adequate ventilation. Use personal protective equipment as
required. See section 8.
Environmental precautions
Environmental precautions Local authorities should be advised if significant spillages cannot be contained. See Section 12 for
additional Ecological Information.
Methods and material for containment and cleaning up
Methods for containment Contain spilled product on land, if possible. Prevent further leakage or spillage if safe to do so.
Methods for cleaning up Clean up promptly by vacuum. Use of a vacuum with high efficiency particulate air (HEPA) filtration
is recommended. Do not create a dust cloud by using a brush or compressed air. Pick up and
transfer to properly labeled containers. See section 13.
7. Handling and storage
Precautions for safe handling
Advice on safe handling Avoid contact with skin and eyes. Avoid generation of dust. Do not breathe dust. Provide
appropriate local exhaust ventilation at machinery and at places where dust can be generated. Do
not create a dust cloud by using a brush or compressed air.
Take precautionary measures against static discharges. All metal parts of the mixing and processing
equipment must be earthed/grounded. Ensure all equipment is electrically earthed/grounded
before beginning transfer operations. Fine dust is capable of penetrating electrical equipment and
may cause electrical shorts.
General hygiene considerations Handle in accordance with good industrial hygiene and safety practice.
Conditions for safe storage, including any incompatibilities
Storage Conditions Keep container tightly closed in a dry and well-ventilated place. Do not store together with volatile
chemicals as they may be adsorbed onto product. Store at ambient conditions. Keep in properly
labeled containers.
8. Exposure controls/personal protection
Control parameters
Exposure Limits The table below is a summary. Please see the specific legislation for complete information.
Chemical name Amorphous Silica
7631-86-9
OSHA PEL (vacated) TWA: 6 mg/m
3
Chemical name Dust, or particulates not otherwise specified
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M5 – CAB-O-SIL M-5 Untreated Fumed Silica Revision date 05-Aug-2022
RR-00072-6
ACGIH TLV TWA: 10 mg/m
3
inhalable particles, recommended
TWA: 3 mg/m
3
respirable particles, recommended
OSHA PEL TWA: 15 mg/m
3
total dust; 5 mg/m
3
respirable fraction
(vacated) TWA: 15 mg/m
3
total dust; 5 mg/m
3
respirable fraction
Alberta TWA: 10 mg/m
3
total; 3 mg/m
3
respirable
British Columbia TWA: 10 mg/m
3
total dust; 3 mg/m
3
respirable fraction
Ontario TWA: 10 mg/m
3
inhalable fraction; 3 mg/m
3
respirable fraction
Quebec TWA: 10 mg/m
3
total dust
Other information In its facilities globally, Cabot Corporation manages silica to the Germany TRGS 900 occupational
exposure limit of 4 mg/m , TWA, Inhalable fraction.
Appropriate engineering controls
Engineering controls Ensure adequate ventilation to maintain exposures below occupational limits. Provide appropriate
local exhaust ventilation at machinery and at places where dust can be generated. Ensure that
eyewash stations and safety showers are close to the workstation location.
Individual protection measures, such as personal protective equipment
Eye/face protection Wear safety glasses with side shields (or goggles).
Hand protection Wear protective gloves to prevent soiling of hands. Use protective barrier cream before handling
the product.
Skin and body protection Wear suitable protective clothing. Wash contaminated clothing before reuse. Contaminated work
clothing should not be allowed out of the workplace.
Respiratory protection Approved respirator may be necessary if local exhaust ventilation is not adequate.
Environmental exposure controls In accordance with all local legislation and permit requirements as applicable for dusts.
General hygiene considerations Handle in accordance with good industrial hygiene and safety practice.
9. Physical and chemical properties
Information on basic physical and chemical properties
Physical state Solid
Appearance Powder
Color white
Odor None
Odor threshold Not applicable
Property Values Remarks Method
pH 3.6 – 4.5 In-house testing
Melting point / freezing point 1700 C NIOSH Pocket Guide to Chemical Hazards
Boiling point / boiling range 2230 C NIOSH Pocket Guide to Chemical Hazards
Flash point Not combustible
Evaporation rate Not applicable
Flammability (solid, gas) Not flammable. Product resists ignition and does not
promote flame spread
Flammability Limit in Air Not applicable
Vapor pressure Not applicable
Relative vapor density Not applicable
Relative density 2.2 @ 20 C
Water solubility Soluble According to OECD 105, enhanced
Solubility(ies) No data available
Partition coefficient Not applicable
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M5 – CAB-O-SIL M-5 Untreated Fumed Silica Revision date 05-Aug-2022
Other information
10. Stability and reactivity
Reactivity Not reactive. Substance is an inert inorganic solid.
Chemical stability Stable under normal conditions. Stable under recommended storage conditions.
Possibility of hazardous reactions None under normal processing.
Hazardous polymerization Hazardous polymerization does not occur.
Conditions to avoid None known.
Incompatible materials None known
Hazardous decomposition products None known
11. Toxicological information
Acute toxicity
Oral LD50 > 5000 mg/kg (rat). No deaths occurred and no signs of toxicity were seen during the
observation periods after single oral administration of silica(OECD 401).
Dermal LD50 > 2000 mg/kg (rabbit). Very slight transient erythema in one animal. No signs of systemic or
organ toxicity (OECD 402).
Inhalation LC50 Due to the product’s physical characteristics, no suitable testing procedure is available.
Skin corrosion/irritation Primary irritation index = 0/8 @ 24 hr. Not classified as an irritant (OECD 404).
Serious eye damage/eye irritation Draize score 1.0/110 @ 24 hr. Not classified as an irritant in rabbit studies (OECD 405). High dust
concentrations may cause mechanical irritation.
Respiratory or skin sensitization No experimental animal data are available. No cases of sensitization in humans have been
reported.
Germ cell mutagenicity Not mutagenic in AMES Test. Negative in the unscheduled DNA synthesis assay. Negative in the
chromosome aberration test in Chinese hamster ovary (CHO) cells.
Carcinogenicity No evidence of carcinogenicity was observed in multiple animal species following repeated oral or
inhalation exposure to amorphous silica. Similarly, epidemiology studies show no evidence of
carcinogenicity in workers who manufacture amorphous silica.
Reproductive toxicity No effects on reproductive organs or fetal development have been reported in animal toxicity
studies.
STOT – single exposure Based on available data, specific target organ toxicity is not expected after single oral, single
inhalation, or single dermal exposure.
Autoignition temperature Not applicable
Decomposition temperature Not applicable
Kinematic viscosity Not applicable
Dynamic viscosity Not applicable
Explosive properties Non-explosible
Oxidizing properties No Oxidizing properties
Bulk density 30-150 kg/m
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DIN/ISO 787:11
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M5 – CAB-O-SIL M-5 Untreated Fumed Silica Revision date 05-Aug-2022
STOT – repeated exposure Repeated dose toxicity: oral (rat), 2 weeks to 6 months, no significant treatment-related adverse
effects at doses of up to 8% silica in the diet.
Repeated dose toxicity: inhalation (rat), 13 weeks, Lowest Observed Effect Level (LOEL) = 1.3 mg/m
3
based on mild reversible effects in the lungs.
Repeated dose toxicity: inhalation (rat), 90 days, LOEL = 1 mg/m
3
based on reversible effects in the
lungs and effects in the nasal cavity.
Repeated dose toxicity using SAS 400 m2/g: inhalation (rat), 90 days, fully reversible inflammation
related to clearance processes following recovery period. NOAEC (lung) based on histopathology
and inflammatory marker is 5 mg/m
Based on available data, a STOT-RE classification is not warranted.
Target organ effects Lungs
Aspiration hazard Based on industrial experience and available data, no aspiration hazard is expected.
Other adverse effects No information available.
12. Ecological information
Ecotoxicity Fish (Brachydanio rerio) LC50 (96 h): > 10,000 mg/l; (Method: OECD 203).
No acute toxicity to Daphnia with EL and EL50 ranging from >1000 to 10,000 mg/L (OECD 202).
Persistence and degradability The methods for determining biodegradability are not applicable to inorganic substances.
Bioaccumulation Not expected due to physicochemical properties of the substance.
Mobility Not expected to migrate.
Other adverse effects No information available.
13. Disposal considerations
Waste treatment methods
Waste from residues/unused products Dispose of in accordance with federal, state and local regulations. Dispose of waste in accordance
with environmental legislation.
Contaminated packaging Dispose of contents/container in accordance with local, regional, national, and international
regulations as applicable.
US EPA Waste Number Unused product is not a hazardous waste under U.S. RCRA, 40 CFR 261
14. Transport information
DOT Not regulated
TDG Not regulated
MEX Not regulated
ICAO (air) Not regulated
IATA Not regulated
IMDG Not regulated
RID Not regulated
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M5 – CAB-O-SIL M-5 Untreated Fumed Silica Revision date 05-Aug-2022
ADR Not regulated
ADN Not regulated
15. Regulatory information
Safety, health and environmental regulations/legislation specific for the substance or mixture
International Inventories
TSCA Complies
Chemical name CAS No US TSCA Inventory listing US TSCA inactive/active
designation
Synthetic Amorphous, Pyrogenic Silica 112945-52-5 Present Active
DSL/NDSL Complies
EINECS/ELINCS Complies
ENCS Complies
IECSC Complies
KECL Complies
PICCS Complies
AICS Complies
TCSI Complies
NZIoC Complies
Note:
Regulatory information is found under the general silica: CAS RN 7631-86-9
Legend:
TSCA – United States Toxic Substances Control Act Section 8(b) Inventory
DSL/NDSL – Canadian Domestic Substances List/Non-Domestic Substances List
EINECS/ELINCS – European Inventory of Existing Chemical Substances/European List of Notified Chemical Substances
ENCS – Japan Existing and New Chemical Substances
IECSC – China Inventory of Existing Chemical Substances
KECL – Korean Existing and Evaluated Chemical Substances
PICCS – Philippines Inventory of Chemicals and Chemical Substances
AICS – Australian Inventory of Chemical Substances
TCSI – Taiwan Chemical Substance Inventory
NZIoC – New Zealand Inventory of Chemicals
US Federal Regulations
TSCA Section 12(b) Export Regulations
This product does not contain any components that are subject to TSCA 12(b) Export Notification.
SARA 313
Section 313 of Title III of the Superfund Amendments and Reauthorization Act of 1986 (SARA). This product does not contain any chemicals
which are subject to the reporting requirements of the Act and Title 40 of the Code of Federal Regulations, Part 372.
SARA 311/312 Hazard Categories
Should this product meet EPCRA 311/312 Tier reporting criteria at 40 CFR 370, refer to Section 2 of this SDS for appropriate classifications.
Clean Air Act Amendments of 1990 (CAA, Section 112, 40 CFR 82)
This product does not contain any components listed as a Hazardous Air Pollutant, Flammable Substance, Toxic Substance, or Class 1 or 2
Ozone Depletor.
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M5 – CAB-O-SIL M-5 Untreated Fumed Silica Revision date 05-Aug-2022
CWA (Clean Water Act)
This product does not contain any substances regulated as pollutants pursuant to the Clean Water Act (40 CFR 122.21 and 40 CFR 122.42).
CERCLA
This material, as supplied, does not contain any substances regulated as hazardous substances under the Comprehensive Environmental
Response Compensation and Liability Act (CERCLA) (40 CFR 302) or the Superfund Amendments and Reauthorization Act (SARA) (40 CFR 355).
There may be specific reporting requirements at the local, regional, or state level pertaining to releases of this material.
US State Regulations
California Proposition 65
This product does not contain any Proposition 65 chemicals.
U.S. State Right-to-Know Regulations
Chemical name New Jersey Massachusetts Pennsylvania
Synthetic Amorphous, Pyrogenic
Silica
112945-52-5
– X X
16. Other information
Key or legend to abbreviations and acronyms used in the safety data sheet
Legend Section 8: Exposure controls/personal protection
Key literature references and sources for data used to compile the SDS
NIOSH Pocket Guide to Chemical Hazards, September 2005. “Silica, amorphous”. DHHS (NIOSH) Publication No. 2005-149. National
Technical Information Service, Springfield, VA. p. 277
Prepared By Cabot Corporation – Safety, Health and Environmental Affairs.
Revision date 05-Aug-2022
Revision Note Revisions to Section(s) 8, 11
Disclaimer
The information set forth is based on information that Cabot Corporation believes to be accurate. No warranty, expressed or implied, is
intended. The information is provided solely for your information and consideration and Cabot assumes no legal responsibility for use or
reliance thereon. In the event of a discrepancy between the information on the non-English document and its English counterpart, the
English version shall supersede
All names annotated with the or symbol are trademarks of the Cabot Corporation or its affiliates
End of Safety Data Sheet
TWA TWA (time-weighted average) STEL STEL (Short Term Exposure Limit)
Ceiling Maximum limit value *
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Skin designation