Document jBByGxy92RExR1KnqgJ0jxoEQ

T ^wakt Corporation MATERIAL SAFETY DATA SHEET u' n Trade Name: SECTION I - Product Identification NATIONAL Generic Description: Wyoming Bentonite, Sodium Montmoril/onite (CAS # 1302-73-9) MATERIAL OR COMPONENT Quartz (0 - 6%) Cristobaiite (0 - 1%) SECTION II - Hazardous Ingredients CAS # 14308-80-7 CAS H 14464-46-1 ----j HAZARD DATA Low concentrations of crystalline silica (Si02) in the form of Quartz, Cristobaiite, and Tridymite mav be present (See Section V). Health: 2 Flammability: 0 Reactivity: 0 Ratings based on NFPA SECTION m - Physical Data Boiling Point: NA Melting Point: ND Freezing Point: ND Specific Gravity (H20 - 1): 2.5 Vapor Pressure (mm Hg): Na por Density (Air = 1): NA Solubility in Water, % by weight: Insoluble % Volatiles by Volume: NA Evaporation Rate (Butyl Acetate = 1): NA Density @20C (Uncompacted): 53 lbs. per cubic foot pH: NA Appearance and Odor: Light tan to gray solids; no odor SECTION IV - Fire and Explosion Data Flash Point: NA Flammable Limits: NA Fire Extinguishing Media: Use media applicable to surrounding area (product will not support combustion). Special Firefighting Procedures: Wear full protective equipment including self contained breathing apparatus. Keep containers cool with water spray. Unusual Fire and Explosion Hazards: None c SECTION V - Health Hazard Information Carcinogenicity; This product contains crystalline silica which is considered a hazard by inhalation. During October 1996, IARC evaluated the literature for polymorphs of crystalline silica1 and determined: 1 In Malang trie overall evaluation, the IARC Working Group noted that carcinogenicity was detected in all Industrial circumstances studied. Carcinogenicity may be dependent on inherent characterislics of crystalline 3ilica or to external factors affecting Its biological aetivily or dislribution of o-ivmorphs. .lO.MAL MSDS PREPARED 3Y: Bentonite Corporation; Denver. Colorado HG-000207 Page l December 10, 1996 c 00-0