What is sodium metasilicate pentahydrate

　　Sodium metasilicate pentahydrate is one kind of sodium metasilicate which contains five water molecules. Its molecular formula is Na2SiO3.5H2O. Being white powder or crystalline particles. Sodium metasilicate pentahydrate is poisonless and harmless , It is easy to solute in water, insoluble in alcohol or acid. Its aqueous solution is alkaline with the ability of removing dirt, emulsification, dispersion, humidification, penetrability and PH values of the buffer capacity.

　　Chemical Equation :Na2SiO3·5H2O+Al2O3=H2SiO3+2NaAlO2+4H2O

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