A colourless fuming liquid, SnCl4, hydrolysed in cold water, decomposed by hot water, and soluble in ethers; r.d. 2.226; m.p. –33°C; b.p. 114°C. Tin(IV) chloride is a covalent compound, which may be prepared directly from the elements. It dissolves sulphur, phosphorus, bromine, and iodine, and there is evidence for the presence of species such as SnCl2I2. In hydrochloric acid and in chloride solutions the coordination is extended from four to six by the formation of the SnCl62− ion.