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Page 3 of 6 <br />Eyes: Wear appropriate protective eyeglasses or chemical safety goggles a5v2scribed by OSHA's eye and face <br />protection regulations in 29 CFR 1910.133 or European Standard EN166. <br />Skin: Wear appropriate protective gloves to prevent skin exposure. <br />Clothing: Wear appropriate protective clothing to prevent skin exposure. <br />Respirators: A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 <br />requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator <br />use. <br />Section 9 - Physical and Chemical Properties <br />Physical State: Solid <br />Appearance: colorless or white <br />Odor: none reported <br />PH: 13 (1% solution) <br />Vapor Pressure: Not available. <br />Vapor Density: Not available. <br />Evaporation Rate:Not available. <br />Viscosity: Not available. <br />Boiling Point: Not available. <br />Freezing/ Melting Point:47.8 deg C <br />Decomposition Temperature:Not available. <br />Solubility: Very soluble in water <br />Specific Gravity/ Density: 2.61 (anhy) <br />Molecular Formula:Na2SiO3.9H2O <br />Molecular Weight: 284.19 <br />Section 10 - Stability and Reactivity <br />Chemical Stability: Stable under normal temperatures and pressures. <br />Conditions to Avoid: Dust generation, excess heat. <br />Incompatibilities with Other Materials: Metals, acids. <br />Hazardous Decomposition Products: Silicon dioxide. <br />Hazardous Polymerization: Has not been reported. <br />Section 11 - Toxicological Information <br />RTECS#: <br />CAS# 13517-24-3 unlisted. <br />CAS# 6834-92-0: VV9275000 <br />LD50/LCS0: <br />Not available. <br />CAS# 6834-92-0: <br />Draize test, rabbit, skin: 250 mg/24H Severe; <br />Oral, mouse: LD50 = 770 mg/kg; <br />Oral, rat: LD50 = 1153 mg/kg; <br />Carcinogenicity: <br />http://fscimage.fishersci.com/msds/01516.htm 4/1/2010 <br />