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Product name: Sodium metasilicate 
Alias: Anhydrous Sodium metasilicate  
CAS RN: 6834-92-0 
EINECS Number: 229-912-9 
Molecular formula: Na2SiO3
Molecular weight: 122.07118 

Physical and chemical properties
Property White square crystal. 
Melting point 40~48℃ 
Relative density 0.7~0.9 
Solubility easily soluble in water and dilute lye, insoluble in alcohol and acid. The aqueous solution is alkaline.  
Uses: For textiles, electroplating, fillers and catalysts, etc.