CAS: 1312-76-1 English name: Silicic acid, potassium salt molecular formula: K4O4Si molecular weight: 248.44 Solubility: Easily soluble in water. Appearance: Colourless and transparent liquid with a thick shape or with a little colour. Use: Used as adhesive of a vat dyestuff,fire retardant,electric welding rod and as inorganic coating,adhesive coating molten and can also be used on the production of soap,medicine,fireproof material etc.