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Trade Name: A® 2047 Sodium Silicate Solution <br />Date Prepare& 06/12/06 Page: 4 of 5 <br />• <br />the same dosage did not develop any treatment-related effects. Decreased <br />numbers of births and survival to weaning was reported for rats fed <br />sodium silicate in their drinking water at 600 and 1200 ppm. <br />Special Studies: Sodium silicate was not mutagenic to the bacterium E. Coli when tested <br />in a mutagenicity bioassay. There are no known reports of <br />carcinogenicity of sodium silicates. Frequent ingestion over extended <br />periods of time of gram quantities of silicates is associated with the <br />formation kidney stones and other siliceous urinary calculi in humans. <br />Sodium silicate is not listed by IARC, NTP or OSHA as a carcinogen. <br />12. ECOLOGICAL INFORMATION <br />Eco toxicity: The following data is reported for sodium silicates on a 100% solids basis: <br />A 96 hour median tolerance for fish (Gambusia affnis) of 2320 ppm; a 96 <br />hour median tolerance for water fleas (Daphnia magna) of 247 ppm; a 96 <br />hour median tolerance for snail eggs (Lymnea) of 632 ppm; and a 96 <br />hour median tolerance for Amphipoda of 160 ppm. This product <br />contains approximately 47% sodium silicate. <br />Environmental Fate: This material is not persistent in aquatic systems, but its high pH when <br />undiluted or unneutralized is acutely harmful to aquatic life. Diluted <br />material rapidly depolymerizes to yield dissolved silica in a form that is <br />indistinguishable from natural dissolved silica. It does not contribute to <br />BOD. This material does not bioaccumulate except in species that use <br />silica as a structural material such as diatoms and siliceous sponges. <br />Where abnormally low natural silica concentrations exist (less than 0.1 <br />ppm), dissolved silica may be a limiting nutrient for diatoms and a few <br />other aquatic algal species. However, the addition of excess dissolved <br />silica over the limiting concentration will not stimulate the growth of <br />diatom populations; their growth rate is independent of silica <br />concentration once the limiting concentration is exceeded. Neither silica <br />nor sodium will appreciably bioconcentrate up the food chain. <br />Physical/Chemical: Sinks and mixes with water. Only water will evaporate from this <br />material. <br />13. DISPOSAL CONSIDERATIONS <br />Classification: Waste material is a RCRA Hazardous waste because it exhibits the <br />corrosive characteristic (pH greater than or equal to12.5) as defined in <br />EPA rules at 40 C.F.R. §261.22 (a)(1). <br />Disposal Method.- Dispose in accordance with federal, state and local regulations. <br />14. TRANSPORT INFORMATION <br />DOT UNStatus: This material is not regulated hazardous material for transportation. <br />j