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What is sodium silicate? High strength, strong adhesion and resistance to acid, heat, alkali, and water toxicity make sodium silicate powder a good choice. Na2SiO3 (9H2O), molecular mass 284.20. Colorless orthogonal Bipyramidal Crystals, or white to offwhite mass or powder. It loses six crystalline water molecules during weathering. It dissolves in water. To dilute it, you can use sodium hydroxide. Its melting temperature is 1088. Low toxicity, LD50(oral to rats)1280mg/kg(without crystalline water). Keep in a cool and dry place. It's an acid-oxide; Silicic anihydride has strong chemical properties. It is insoluble with water. It reacts with hydrofluoric acid or hydrogen fluoride to create silicon tetrafluoride. At room temperature, strong alkali solutions react slowly with sio2 in order to produce the silicates. Strong alkali solution will eat glass. Glass bottles containing strong solutions to alkali should not use frosted glasses stoppers. Glass stoppers (glass contains sio2) can be used. Sticky sodium silicate can be produced to bond the stopper to your bottle. Glass bottles should not be kept in contact with concentrated alkali.
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