Also known as Disodium Metasilicate Pentahydrate or Disodium Trioxosilicate Pentahydrate, this chemical presents as a powder that is crystalline and white to greenish opaque in color. It is soluble in cold water and classified as a synthetic reagent and an inorganic salt. The melting point of Sodium Metasilicate Pentahydrate is 1088°C and it is known to be very corrosive, causing burns and irritation of the respiratory system. Storage recommendations are to keep under ambient temperatures.