Safety Data Sheet
Material: 60004600 HDK N20
HYDROPHILIC PYROGENIC SILICA
Version: 2.1 (US) Date of print: 06/25/20 15 Date of last alteration: 06/24/2015
Page: 1/8
1. Product and company identification
1.1 Identification of the substance or preparation:
Commercial product name: HDK N20
HYDROPHILIC PYROGENIC SILICA
Use of substance / preparation Industrial.
Auxiliary agent for: Plastics , Lacquer , Building materials , elastomer
products , cosmetics .
1.2 Company/undertaking identification:
Manufacturer/distributor: Wacker Chemie AG
Hanns-Seidel-Platz 4
81737 M nchen
Germany
Customer information: Wacker Chemical Corporation
3301 Sutton Road
Adrian, Michigan 49221-9397
USA
InfoLine:
Tel (517) 264-8240, Fax (517) 264-8740
Hours of operation:
Monday – Friday, 8 am to 5 pm (eastern standard time)
Corporate website: www.wacker.com
Emergency telephone no. (24h): (517) 264-8500
Transportation emergency: (800) 424-9300 (CHEMTREC, USA)
(703) 527-3887 (CHEMTREC, international)
This SDS was prepared by the Regulatory Affairs and Product Safety Department (RAPS) of Wacker Chemical Corporation.
2. Hazards identification
2.1 Classification of the substance or mixture
Classification (GHS):
Not a hazardous substance or mixture.
2.2 Label elements
Labelling (GHS):
No labeling according to GHS required.
2.3 Other hazards
No data available.
3. Composition/information on ingredients
3.1 Chemical characterization (substance)
CAS No. Chemical characteristics
112945-52-5 Pyrogenic micro-dispersed silica, synthetic X-ray amorphous silicon dioxide (SiO2)
3.2 Information on ingredients:
This material does not contain any reportable hazardous ingredients.
Substances listed in the Subsections “HAPS” and “California Proposition 65 Carcinogens / Reproductive Toxins” that are not
listed in this section are only present at quantities below 0.1% for California Proposition 65 listed toxins or below 1% for non-
carcinogenic HAPS or they are inextricably bound in the product.
Safety Data Sheet
Material: 60004600 HDK N20
HYDROPHILIC PYROGENIC SILICA
Version: 2.1 (US) Date of print: 06/25/20 15 Date of last alteration: 06/24/2015
Page: 2/8
4. First-aid measures
4.1 General information:
Get medical attention if irritation occurs or if breathing becomes difficult.
4.2 After inhalation
If inhaled, remove to fresh air.
4.3 After contact with the skin
If contact with skin, wash skin with plenty of water or with water and soap.
4.4 After contact with the eyes
If contact with eyes, immediately flush eyes with plenty of water.
4.5 After swallowing
Drink plenty of water. Get medical attention if symptoms occur. Show label if possible.
5. Fire-fighting measures
5.1 Flammable properties:
Property: Value: Method:
Flash point………………………………………………………: not applicable
Boiling point / boiling range ……………………………….: not applicable
Lower explosion limit (LEL) ……………………………….: not applicable
Ignition temperature …………………………………………: not applicable
5.2 Fire and explosion hazards:
Material does not burn. Electrostatic charging is possible.
5.3 Recommended extinguishing media:
Use extinguishing measures appropriate to the source of fire.
5.4 Unsuitable extinguishing media:
not applicable
5.5 Special exposure hazards arising from the substance or preparation itself, combustion products, resulting gases
not applicable
5.6 Fire fighting procedures:
Fire fighters should wear full protective clothing including a self-contained breathing apparatus.
6. Accidental release measures
6.1 Precautions:
Avoid dust formation. Do not breathe dust. Wear personal protection equipment (see section 8).
HAZWOPER PPE Level: D
6.2 Containment:
Cover any spilled material in accordance with regulations to prevent dispersal by wind.
Spills of material which could reach surface waters must be reported to the United States Coast Guard National Response
Center’s toll free phone number (800) 424-8802.
6.3 Methods for cleaning up
Damp down dust and fill into containers.
7. Handling and storage
Safety Data Sheet
Material: 60004600 HDK N20
HYDROPHILIC PYROGENIC SILICA
Version: 2.1 (US) Date of print: 06/25/20 15 Date of last alteration: 06/24/2015
Page: 3/8
7.1 Handling
Precautions for safe handling:
Avoid dust formation.
Precautions against fire and explosion:
Electrostatic discharge possible during transport and processing. Take precautionary measures against electrostatic charging.
Ensure all parts of equipment are well earthed. Use inert gas when working with combustible and explosive liquids. Avoid dust
deposit, remove dust regularly.
7.2 Storage
Conditions for storage rooms and vessels:
none known
Advice for storage of incompatible materials:
not applicable
Further information for storage:
Keep container dry and tightly closed.
8. Exposure controls and personal protection
8.1 Engineering controls
Ventilation:
Use only with adequate ventilation.
Local exhaust:
In case of dust formation: ( To maintain concentration below TLV. ) Local exhaust ventilation which meets the requirements of
ANSI Z9.2 is recommended to control airborne contaminants at the point of use.
8.2 Associate substances with specific control parameters such as limit values
Maximum airborne concentrations at the workplace:
CAS No. Material Type mg/m
3
ppm Dust fract.
7631-86-9 Silica, amorphous OSHA PEL 0.8
Particulates not otherwise classified ACGIH TWA 10.0 Inhalable
dust/mist
Particulates not otherwise classified ACGIH TWA 3.0 Respirable
dust/mist
Re Silica, amorphous: The exposure limits given for CAS-No. 7631-86-9 cover all types of synthetic amorphous silica; it appears,
that there is an error in the OSHA PEL entry for amorphous silica. There should have been a footnote to the Z-3 Table indicating
that the percent SiO2 in formula (80 mg/m3 + % SiO2) refers to crystaline silica content and not to amorphous silica. For
evaluation of U.S. exposure measurements WACKER recommends use of the current NIOSH REL (6 mg/m3) instead of the old
Z-3 Table entry.
Re Particulates not otherwise classified: The value is for particulate matter containing no asbestos and < 1% crystalline silica
(ACGIH).
8.3 Personal protection equipment (PPE)
Respiratory protection:
In case of dust formation: A NIOSH approved particulate respirator with a P95 or higher rating.
Hand protection:
Recommendation: rubber gloves .
Eye protection:
Recommendation: Safety glasses with side shields or chemical safety goggles.
Other protective clothing or equipment:
Barrier cream may be used to prevent dryness of skin.
8.4 General hygiene and protection measures:
Do not breathe dust/vapor/mist/gas/aerosol. Wash thoroughly after handling.
Safety Data Sheet
Material: 60004600 HDK N20
HYDROPHILIC PYROGENIC SILICA
Version: 2.1 (US) Date of print: 06/25/20 15 Date of last alteration: 06/24/2015
Page: 4/8
9. Physical and chemical properties
9.1 Appearance
Physical state / form ............................................... : solid - powder
Colour..................................................................... : white
Odour ..................................................................... : odourless
9.2 Safety parameters
Property: Value: Method:
Melting point / melting range ...................................: 1700 C (3,092 F)
Boiling point / boiling range .....................................: not applicable
Flash point...............................................................: not applicable
Ignition temperature ................................................: not applicable
Lower explosion limit (LEL) .....................................: not applicable
Vapour pressure......................................................: not applicable
Density ....................................................................: approx. 2.2 g/cm at 20 C (68 F) (DIN 51757)
Bulk density.............................................................: 20 - 130 kg/m
Water solubility / miscibility......................................: virtually insoluble at 20 C (68 F)
pH-Value .................................................................: 3.6 - 4.5 (DIN EN ISO 787-
9)
Viscosity (dynamic) .................................................: not applicable
9.3 Further information
VOC........................................................................ : This material does not contain any reportable VOCs. 0
g/l
(calculated value)
10. Stability and reactivity
10.1 General information:
If stored and handled in accordance with standard industrial practices no hazardous reactions are known.
10.2 Conditions to avoid
10.3 Materials to avoid
none known
10.4 Hazardous decomposition products
If stored and handled properly: none known .
10.5 Further information:
Hazardous polymerization cannot occur.
11. Toxicological information
11.1 Information on toxicological effects
11.1.1 Acute toxicity
Assessment:
Based on the available data acute toxic effects are not expected after single oral exposure. Based on the available data acute
toxic effects are not expected after single dermal exposure. Based on the available data acute toxic effects are not expected after
short-term inhalative exposure.
Product details:
Route of exposure Result/Effect Species/Test system Source
oral LD
50
: > 5000 mg/kg rat literature
dermal LD
50
: > 5000 mg/kg rabbit literature
Safety Data Sheet
Material: 60004600 HDK N20
HYDROPHILIC PYROGENIC SILICA
Version: 2.1 (US) Date of print: 06/25/20 15 Date of last alteration: 06/24/2015
Page: 5/8
by inhalation
(dust)
LC
50
: > 0.139 mg/l; 4 h
At the technically highest possible concentration no
mortality in animal test.
rat literature
11.1.2 Skin corrosion/irritation
Assessment:
Based on the available data a clinically relevant skin irritation hazard is not expected.
Product details:
Result/Effect Species/Test system Source
not irritating rabbit literature
11.1.3 Serious eye damage / eye irritation
Assessment:
Based on the available data a clinically relevant eye irritation hazard is not expected.
Product details:
Result/Effect Species/Test system Source
not irritating rabbit literature
11.1.4 Respiratory or skin sensitization
Assessment:
By handling the product for many years no damage to health was observed.
11.1.5 Germ cell mutagenicity
Assessment:
According to our present state of knowledge not mutagenic.
11.1.6 Carcinogenicity
Assessment:
Animal tests have not revealed any carcinogenic effects.
11.1.7 Reproductive toxicity
Assessment:
In animal experiments there have not been any indications of reproduction toxicity.
11.1.8 Specific target organ toxicity (single exposure)
Assessment:
For this endpoint no toxicological test data is available for the whole product.
11.1.9 Specific target organ toxicity (repeated exposure)
Assessment:
Changes in the lungs (inflammatory processes) observed in animal experiments after chronic inhalative exposure were reversible;
no indication of silicosis.
11.1.10 Aspiration hazard
Assessment:
For this endpoint no toxicological test data is available for the whole product.
11.1.11 Further toxicological information
No component of this product present at levels greater than or equal to 0.1% is identified as a known or anticipated carcinogen by
NTP. No component of this product present at levels greater than or equal to 0.1% is identified as probable, possible or confirmed
human carcinogen by IARC. No component of this product present at levels greater than or equal to 0.1% is identified as a
carcinogen or potential carcinogen by OSHA.
Safety Data Sheet
Material: 60004600 HDK N20
HYDROPHILIC PYROGENIC SILICA
Version: 2.1 (US) Date of print: 06/25/20 15 Date of last alteration: 06/24/2015
Page: 6/8
Other information: By handling the product for many years no damage to health was observed.
12. Ecological information
12.1 Toxicity
Assessment:
No expected damaging effects to aquatic organisms. According to current knowledge adverse effects on water purification plants
are not expected.
Product details:
Result/Effect Species/Test system Source LC
50
: > 10000 mg/l zebra fish (Danio rerio) (96 h) literature
EC
50
: > 10000 mg/l Daphnia magna (24 h) literature
12.2 Persistence and degradability
Assessment:
The substance is degradable in abiotic processes.
12.3 Bioaccumulative potential
Assessment:
No adverse effects expected.
12.4 Mobility in soil
Assessment:
No adverse effects expected.
12.5 Other adverse effects
none known
12.6 Additional information
Insoluble in water.
13. Disposal considerations
13.1 Product disposal
Recommendation:
Material that cannot be used, reprocessed or recycled should be disposed of in accordance with Federal, State, and local
regulations at an approved facility. Depending on the regulations, waste treatment methods may include, e.g., landfill or
incineration.
13.2 Packaging disposal
Recommendation:
Completely discharge containers (no tear drops, no powder rest, scraped carefully). Containers may be recycled or re-used.
Observe local/state/federal regulations. Uncleaned packaging should be treated with the same precautions as the material.
14. Transport information
14.1 US DOT & CANADA TDG SURFACE
Valuation ……………………………………….. : Not regulated for transport
14.2 Transport by sea IMDG-Code
Valuation ……………………………………….. : Not regulated for transport
14.3 Air transport ICAO-TI/IATA-DGR
Valuation ……………………………………….. : Not regulated for transport
Safety Data Sheet
Material: 60004600 HDK N20
HYDROPHILIC PYROGENIC SILICA
Version: 2.1 (US) Date of print: 06/25/20 15 Date of last alteration: 06/24/2015
Page: 7/8
15. Regulatory information
15.1 U.S. Federal regulations
TSCA inventory status and TSCA information:
This material or its components are listed on or are in compliance with the requirements of the TSCA Chemical Substance
Inventory. This material is in compliance with TSCA under CAS Number 7631-86-9 (silica, amorphous).
TSCA 12(b) Export Notification:
This material does not contain any TSCA 12(b) regulated chemicals.
CERCLA Regulated Chemicals:
This material does not contain any CERCLA regulated chemicals.
SARA 302 EHS Chemicals:
This material does not contain any SARA extremely hazardous substances.
SARA 311/312 Hazard Class:
This product does not present any SARA 311/312 hazards.
SARA 313 Chemicals:
This material does not contain any SARA 313 chemicals above de minimus levels.
HAPS (Hazardous Air Pollutants):
This material does not contain any hazardous air pollutants.
15.2 U.S. State regulations
California Proposition 65 Carcinogens:
This material does not contain any chemicals known to the state of California to cause cancer.
California Proposition 65 Reproductive Toxins:
This material does not contain any chemicals known to the State of California to cause reproductive effects.
Massachusetts Substance List:
112945-52-5 Silica, amorphous, fumed
New Jersey Right-to-Know Hazardous Substance List:
112945-52-5 Silica, amorphous, fumed
Pennsylvania Right-to-Know Hazardous Substance List:
112945-52-5 Silica, amorphous, fumed
15.3 Canadian regulations
This product has been classified in accordance with the Hazard criteria of the CPR and the SDS contains all the information
required by the CPR.
WHMIS Hazard Classes:
None.
15.4 Details of international registration status
Relevant information about individual substance inventories, where available, is given below.
South Korea (Republic of Korea)…………….. : ECL (Existing Chemicals List):
This product is listed in, or complies with, the substance inventory.
Japan………………………………………………….. : ENCS (Handbook of Existing and New Chemical Substances):
This product is listed in, or complies with, the substance inventory.
Australia ……………………………………………… : AICS (Australian Inventory of Chemical Substances):
This product is listed in, or complies with, the substance inventory.
People’s Republic of China…………………….. : IECSC (Inventory of Existing Chemical Substances in China):
This product is listed in, or complies with, the substance inventory.
Canada……………………………………………….. : DSL (Domestic Substance List):
This product is listed in, or complies with, the substance inventory.
Philippines …………………………………………… : PICCS (Philippine Inventory of Chemicals and Chemical Substances):
This product is listed in, or complies with, the substance inventory.
Safety Data Sheet
Material: 60004600 HDK N20
HYDROPHILIC PYROGENIC SILICA
Version: 2.1 (US) Date of print: 06/25/20 15 Date of last alteration: 06/24/2015
Page: 8/8
United States of America (USA) ……………… : TSCA (Toxic Substance Control Act Chemical Substance Inventory):
This product is listed in, or complies with, the substance inventory.
European Economic Area (EEA) …………….. : REACH (Regulation (EC) No 1907/2006):
REACH registration number: 01-2119379499-16-0001
General note: the registration obligations for substances imported into the EEA or
manufactured within the EEA by the supplier mentioned in section 1 are fulfilled by
the said supplier. The registration obligations for substances imported into the EEA
by customers or other downstream users must be fulfilled by the latter.
16. Other information
16.1 Additional information:
This Safety Data Sheet (SDS) meets the requirements of the Federal OSHA Hazard Communication Standard (29 CFR
1910.1200). This product has been classified according to the hazard criteria of the Controlled Products Regulations (CPR) and
the SDS contains all of the information required by the CPR. This information relates to the specific material designated and may
not be valid for such material used in combination with any other materials or in any process. Such information is to the best of
our knowledge and belief accurate and reliable as of the date compiled. However, no representation, warranty or guarantee
expressed or implied, is made as to its accuracy, reliability or completeness. It is the user’s responsibility to satisfy himself as to
the suitability and completeness of such information for his own particular use. We do not accept liability for any loss or damage
that may occur from the use of this information. Nothing herein shall be construed as a recommendation for uses which infringe
valid patents or as extending a license under valid patents. This SDS provides selected regulatory information on this product,
including its components. This is not intended to include all regulations. It is the responsibility of the user to know and comply with
all applicable rules, regulations and laws relating to the product being used.
Vertical lines in the left-hand margin indicate changes compared with the previous version.
All deliveries are subject to the WACKER SILICONES Health Care Policy, which is available at www.wacker.com.
16.2 Glossary of Terms:
ACGIH – American Conference of Governmental Industrial
Hygienists
DOT – Department of Transportation
hPa – Hectopascals
mPa*s – Milli Pascal-Seconds
OSHA – Occupational Safety and Health Administration
PEL – Permissible Exposure Limit
ppm – Parts per Million
SARA – Superfund Amendments and Reauthorization Act
STEL – Short Term Exposure Limit
TSCA – Toxic Substances Control Act
TWA – Time Weighted Average
WHMIS – Canadian Workplace Hazardous Materials
Identification System
Flash point determination methods………………………………….Common name
ASTM D56……………………………………………………………………….. Tagliabue (Tag) closed cup
ASTM D92, DIN 51376, ISO 2592 ………………………………………. Cleveland open cup
ASTM D93, DIN 51758, IS O 2719 ………………………………………. Pensky-Martens closed cup
ASTM D3278, DIN 55680, IS O 3679 …………………………………… Setaflash or Rapid closed cup
DIN 51755 ……………………………………………………………………….. Abel-Pensky closed cup
16.3 Conversion table:
Pressure:………………..: 1 hPa * 0.75 = 1 mm Hg = 1 torr; 1 bar = 1000 hPa
Viscosity: ………………..: 1 mPa*s = 1 centipoise (cP)