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OCR for page 63
63 Name: CAS No.: 1344-09-8 NAS/CWTC 033/8 2 SODIUM SILICATE, ACTIVATED SILICA Formula Weight: 242 for n = 1 Chemical Formula: Na2O(SiO2)n Typically n = 3 Description _: Colorless, turbid aqueous solution. Use e Used as metal corrosion inhibitor, clarification aid, and stabilizer for iron and manganese. Purity Requirements: A maximum dosage of 16 mg of sodium silicate/liter of water was considered, and at that dosage sodium silicate is not known to contribute any contaminants that adversely affect the potability of drinking water.