Strontiumchlorat

BeschreibungStrontium chlorate, Sr(ClO3)2, has a molecular weight of 254.52 g/mol. It is a white solid with a melting point of 120°C and a density of 3.152 g/cm3. It is soluble in water (174 g/100 ml at 20°C). Its CAS number is 7791-10-8. Sr(ClO3)2 is shock sensitive, and is highly flammable if allowed to sit in air. These white, water-soluble crystals decompose at 120°C. It is used in pyrotechnics and tracer bullets. There are two coexisting crystal hydrates that undergo interconversion, the dihydrate and the hexahydrate. These compounds are not as shock sensitive as the anhydrate.

VerwendenIn pyrotechnics to produce red fire.

synthetischeStrontium chlorate can be produced by the Liebig method which consists of passing chlorine gas through a solid such as Sr(OH)2: 6Sr(OH)2＋ 6Cl2→5SrCl2＋ Sr(CIO3)2＋ H2O. However, separating the two salts remains problematic since both are soluble in water. Strontium chloride solubility is 42.9 g/100 ml of water at 20°C while that of strontium chlorate is 174.9 g/100 ml of water at 20°C.