Eager Polymers

3350 W. 48th Place

Chicago, IL 60632-3000

Phone: 773-927-3484 FAX: 773-650-5853



Material Safety Data Sheet

CAB-O-SIL, M-5 grade

Eager Polymers # EP7965


HMIS Index

0 Minimal

1 Slight

2 Moderate

3 Serious

4 Severe


HMIS Rating






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

Color: White

Odor: None

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

Reactivity: Stable

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


Section XII Ecological Information

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.


Section XVI Other Information

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.