What Is Tin Oxide

White tetragonal crystal, density 7, melting point 1127 ° C. Insoluble in water, dilute acid and alkali solution. Soluble in concentrated sulfuric acid. Co-dissolved with alkali to form stannate. Used in the manufacture of opaque glass, porcelain uranium and glass polish. Natural Produced is cassiterite. It can be produced by burning tin in the air. Also known as tin oxide, the formula amount is 150.7. White, tetragonal, hexagonal or orthorhombic crystals having a density of 6.95 g/cm 3 and a melting point of 1630 ° C, sublimed at 1800 to 1900 ° C. Hard to dissolve in water, alcohol, dilute acid and lye. It is slowly dissolved in a hot concentrated alkali solution and decomposed, and co-melted with a strong base to form a stannate. Soluble in concentrated sulfuric acid or concentrated hydrochloric acid. Used in the production of tin salts, catalysts, mordants, coatings, glass, enamel industry as a polishing agent. Tin can be produced by burning in air or by thermally decomposing Sn(OH)4.