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Chemical Sampling Information: |
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| Sodium Metasilicate |
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General Description
Synonyms: Silicic Acid (H2Si03) Disodium Salt; Crystamet; Disodium Metasilicate; Disodium Monosilicate; Orthosil; Metso Beads, Drymet; Sodium Metasilicate, Anhydrous; Sodium Silicate; Water Glass
OSHA IMIS Code Number: S245
Chemical Abstracts Service (CAS) Registry Number: 6834-92-0
NIOSH, Registry of Toxic Effects (RTECS) Identification Number: VV9275000
Chemical Description and Physical Properties: Usually obtained as a glass; also orthorhombic crystals. Usually prepared from sand (SiO2) and soda ash (NaCO3) by fusion. Soluble in cold water, hydrolyzed by hot water. Insoluble in alcohol, acids, salt solutions.
molecular formula: O3Si•2Na
molecular weight: 122.07
melting point: 1089°C
Health Factors
Health Effects: Severe skin irritation; inhalation of dusts can irritate upper respiratory tract.
Monitoring Methods used by OSHA
Laboratory Sampling/Analytical Method:
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note: Call SLTC for instructions.
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