This type of compound has a chemical formula of Na2SiO3. When it comes to the appearance of this compound, you’ll find that it is mostly white to greenish crystals. This compound also is commonly known as water glass or liquid glass and it is available in both an aqueous solution and also in a solid form. The difference in color has to do with how pure the compound is because if it is pure, it will appear colorless or white but if it is a commercial sample, then you will find it is more of a green or blue color because of the presence of iron in the compounds. This type of compound is most frequently used in cement, fire protection, textiles and lumber processing.