3350 W. 48th Place
Chicago, IL 60632-3000
Phone: 773-927-3484 FAX: 773-650-5853
Eager Polymers # EP7965
0 – Minimal
1 – Slight
2 – Moderate
3 – Serious
4 – Severe
Section I – Chemical Product and Company Identification
Trade Name: CAB-O-SIL, (registered trade name) untreated fumed silica.
Manufacturer: Cabot Corp. CAB-O-SIL Division, 700 E. U.S. Highway 36, Tuscola, IL 61953-9643
Telephone No., 1-217-253-3370
Section II – Composition / Information on Ingredients
Substance, Trivial Name: CAB-O-SIL, (registered trade name) amorphous fumed silica.
Formal Name: Synthetic Amorphous Silicon Dioxide, Crystalline- free
Chemical Name: Oxide
Chemical Formula: SiO2
Molecular Weight: 60
CAS No., 112945-52-5 (Specific), 7631-86-9 (General)
% by weight 99+
Trade Names and Synonyms: fumed silica, M-5, Colloidal silica, Synthetic silica,
Material Uses: Used as a rheology control, reinforcement and free flow agent in Silicone Rubber, Coatings, Adhesives, and Pharmaceuticals etc.
Section III – Hazards Identification
Main Hazards: Dry powdered materials can build static electrical charges when subjected to friction. Proper precautions when using CAB-O-SIL (registered trade name) fumed silica in the presence of flammable or explosive gasses and liquids should be taken to prevent accidents.
Potential Health effects: Eye: May cause irritation at high dust levels
Skin: May cause drying of skin
Ingestion: None expected
Inhalation: Temporary discomfort due to inhalation of dust
Chronic: Not listed as carcinogen by IARC, NTP, Z list or OSHA
Teratology: None identified
Reproductive Info: None identified
Target Organs: Lung
Section IV – First Aid Measures
Inhalation: Not hazardous. In case of discomfort, remove exposed individual to fresh air
Ingestion: Not hazardous. No treatment required
Eyes: Immediately flush lightly with plenty of water for 15 minutes. Get medical attention
Skin: Not hazardous
Section V – Fire fighting Measures
Extinguishing Media: Not applicable
Unsuitable Media: Not applicable
Flash Point: Not applicable
Flash Point Method: Not applicable
Lower Explosive Limit: Not applicable
Upper Explosive Limit: Not applicable
Ignition in Air: Not defined
Flammable Classification: Not applicable
Flame Propagation in Air: Not applicable
Fire Fighting Procedure: Not applicable
Combustion Hazards: Not applicable
Protective Equipment: Standard personal protective equipment for structural fire fighting
Unusual Fire Hazards: See Section III
Dust Explosion Potential: Will not create or support conditions that would result in a dust explosion
Sensitivity to Impact: Not applicable
Static Discharge Effects: Static electricity can build up when subjected to friction. See Section III
Section VI - Accidental Release Measures
Personal Precautions: Wear goggles if release creates conditions where eye contact is probable. If airborne dust concentrations exceed the applicable exposure limits, then an approved respirator for dust/mist is recommended.
Spill Cleanup Measures: Spills may be collected, preferably by vacuum, and placed in suitable container for disposal.
Environmental Precautions: Fumed silica is a not hazardous waste. Dispose of in landfill in accordance with international, national, U.S. federal and local laws and regulations.
Section VII – Handling and Storage
Handling Precautions: Ventilated work area if necessary. Take precautionary measures against possible build-up of electrostatic charge. Assess manual handling of bagged product; take suitable precautions.
Storage: Product should be stored dry and away from volatile chemicals.
Hygienic Practices: Avoid eye contact. Wash exposed skin and clothing frequently.
Special Precautions: Avoid creating dust. Clean up spills promptly.
Section VIII – Exposure controls / Personal Protection
Inhalation Standards: TLV (U.S.) = 10 mg/cubic meter total dust particles not otherwise classified
PEL (U. S.) = 10 mg/cubic meter for nuisance dust
MAK (Germany) = 4mg/cubic meter total dust
OES (U.K.) = 6 mg/cubic meter total inhalable, 2.4 mg/cubic meter respirable
Eye-Face Protection: Safety glasses with side shields or goggles recommended to prevent eye contact.
Skin Protection: Drying may occur. Use barrier cream prior to skin contact.
Section VIII – Exposure controls / Personal Protection, continued
Protective Clothing: None required
Respiratory Protection: Approved dust/mist respirator recommended for illegal concentrations
Engineering Controls: Use general or local exhaust ventilation to meet exposure limit requirements
Other Protective Measures: Wash exposed skin and clothing frequently
Section IX – Physical and Chemical Properties
Physical State: Solid powder
Odor Threshold: Not applicable
ph: 4.0 (approximately 4% silica in water)
Boiling Point: 2230 degree Celsius
Evaporation Rate: Not applicable
Melting/Freezing Point: 1700 degree Celsius or 3092 degree Fahrenheit
% Volatile by Volume: Not applicable
Solubility in Water: Insoluble in water
Density: 2.2 g/cubic centimeter @ 25 degree Celsius
Vapor Pressure: Not applicable
Water/ Oil Distribution: Not applicable
Viscosity: Not applicable
Pour Point: Not applicable
Section X – Stability and reactivity
Chemical Stability: Stable
Conditions to Avoid: None
Incompatible Materials: Not applicable
Hazardous Decomposition: None
Hazardous Polymerization: None
Section XI – Toxicological Information
Routes of exposure: Ingestion, Inhalation, Eye and Skin
Acute Inhalation Effect: None known other than possible temporary discomfort
Acute Ingestion Effect: None expected
Acute Eye Effect: Irritation at high dust levels
Acute Skin Effect: May cause drying of skin
Chronic Inhalation Effect: There is no human data available that suggests that occupational exposures to synthetic fumed silica will cause adverse chronic health effects. Long-term inhalation animal studies involving a variety of insoluble solid particles have resulted in chronic inflammation, lung fibrosis and lung tumors in rats. Tumors were not observed in similar studies using other animal species (i.e., mouse and hamster). Most inhalation toxicologists feel the tumor response is unique to rats and not relevant to human exposure. Synthetic fumed silica was not used in these tests. The researchers who conducted the above studies felt the adverse reactions in the rat were due to high exposure levels of insoluble dusts overwhelming the lung clearance mechanisms (lung overload phenomenon) and is not the result of specific chemical effect of the particulate tested. This effect is not expected to occur from occupational exposure to synthetic amorphous silica.
Section XI – Toxicological Information, continued
Chronic Ingestion effect: None expected
Chronic eye effect: None expected
Chronic skin effect: None expected
Sensitization to Material: None expected
Medical Conditions Aggravated: Dermatitis
Synergistic Materials: None expected
Mutagenicity: In-vitro and in-vivo tests negative for mutagenicity
Reproductive Toxicity: None known
Teratogenicity: None known
Carcinogenicity: Not listed as a carcinogen By IARC, NTP, Z list or OSHA
LD50 for Material: Greater than 5,000 mg/kg, acute oral rat
Greater than 5,000 mg/kg, acute dermal for rabbits
Greater than 5,000 mg/kg, rat No OECD method
Oral-rat 3,160 mg/kg (SAX)
LC50 for Material: Not applicable
Greater than 0.139 mg/ quarter hour, Rat acute inhalation
Mobility: Not soluble in water, not mobile in soil
Persistence / Degradability: Not applicable
Bio-accumulation: Not applicable
Ecotoxicity: Acute fish Toxicity: NOEC (96 hr) greater than or equal to 10,000 mg/l, Brachydanio
rerio, OECD 203
Acute Daphnia Toxicity: NOEC (24 hr) greater than or equal to 1000 mg/l, Daphnia
Magna, OECD 203
WGK Water Hazard Class: 0
Section XIII – Disposal Considerations
Legal Classification: Not hazardous waste under U.S. RCRA (Resource Conservation and Recovery Act) Regulations. Not a restricted/non-hazardous waste under Canadian Workplace Hazardous Materials Information Systems (WHMIS) regulations. Fumed silica is not a special waste under U.K. Special Waste Regulations 1996. Dispose of in accordance with local regulations. These regulations implement EC directive 91/689 and decision 94/904.
Waste key Number: 314 42 Silicic acid and silica waste TA waste (Germany)
314 42 Silicic acid and silica waste ONORM (Austria)
Container Disposal: May dispose of with domestic waste in accordance with the necessary technical regulations following consultation with waste experts and the responsible authorities
Section XIV – Transportation Information
UN Number: Not classified
UN Proper Shipping Name: Fumed silica, Crystalline-free
UN Class: Not classified
UN Packing Group: Not classified
U.S. Rail Regulations: Not classified
Section XV – Regulatory Information
National Registries: CAB-OSIL (registered trade name)
Australia: AICS Australian Inventory list, CAS # 7631-86-9
Section XV – Regulatory Information, continued
Canada: CEPA, Canadian Environmental Protection Act, 6th Amendment Domestic Substances List, CAS #7631-86-9.
Europe: EINECS, European Inventory of Existing Commercial Chemicals Substances, #2315454.
Japan: MITI, Ministry of International Trade and Industry List of Existing Chemical Substances.
United Kingdom: Control of Substances Hazardous to Health Regulations 1994 – listed in Guidance Note EH40. Chemicals (Hazardous Information and Packaging for Supply) Regulation 1994-Not listed
United States: TSCA, Toxic Substance Control Act, CAS #7631-86-9
U.S. Clean Air Act, 1990: (CAA Section 112, 40 CFR82): CAB-O-SIL (registered trade name) fumed Silica does not contain and is not manufactured with Class I or Class II ozone depleting chemicals, as defined in the Clean Air Act of 1990.
Comprehensive Environmental Response, Compensation & Liability Act, (CERCLA, 40 CFR302): Not hazardous.
Superfund Amendments & Reauthorization Act (SARA) Title III.
Emergency Planning & Community Right-To-Know ACT (EPCRA, 40 CFR355): Non-Hazardous
SARA Section 311 (40 CFR 370): MSDS Requirements: not regulated
SARA Section 312 (40 CFR 370): Applies in quantities greater than or equal to 10,000 lbs.
SARA Section 313 (40 CFR 372): Does not contain any of the substance identified under Section
313 as toxic.
U.S. CONEG Legislation: Not determined.
U. S. FDA Regulations: The use of CAB-O-SIL (registered trade name) has been approved by the United States Food and Drug Administration (FDA) for many food applications as both direct food additive at levels up to 2 % by weight and as a substance allowed in the manufacture of materials that come in direct contact with food in various producing, manufacturing, packing, preparing, transporting and holding operations. Pertinent sections can be found in Title 21 Code of Federal Regulations, Part 172 Food Additives Permitted for Direct Addition to Food for Human Consumption.
Pharmaceutical Information: CAB-O-SIL meets all of the requirements for colloidal silicon dioxide as describe in the U.S. Pharmacopoeia National Formulary. It also meets the requirements as described in the European Pharmacopoeia and the Deutsches Arzneibuch (DAB 1996) and the Japanese Pharmacopoeia. It appears in the Handbook of Pharmaceutical Excipients under the monograph, colloidal silicon dioxide.
Last Revision: May 6, 2015.
Disclaimer: The information set forth is based on information that is believed to be accurate. No warranty, expressed or implied, is intended. The information is provided solely for your information and consideration and assumes no legal responsibility for use or reliance thereon.