H2SnOH6

H2SnOH6, also known as hexahydroxystannate(IV) or stannic acid, is a chemical compound. It is a complex inorganic acid with the tin atom in the +4 oxidation state. This compound typically exists as a white, amorphous solid. It is a derivative of stannic acid, which is a hydrated form of tin(IV) oxide.

Hexahydroxystannate(IV) can be prepared through various methods, often involving the reaction of tin(IV) compounds with strong bases. For example, it can be formed by the alkaline hydrolysis of tin(IV) chloride or by dissolving tin(IV) oxide in concentrated alkali solutions. The resulting compound is usually isolated as a salt, such as sodium hexahydroxystannate(IV), Na2Sn(OH)6, or potassium hexahydroxystannate(IV), K2Sn(OH)6.

The properties of H2SnOH6 are characteristic of complex metal hydroxides. It is generally insoluble in water but dissolves in acidic solutions to form tin(IV) ions. Its thermal decomposition typically yields tin(IV) oxide and water. While not as commonly encountered as some other tin compounds, hexahydroxystannate(IV) and its salts have found applications in areas such as analytical chemistry and as precursors in the synthesis of other tin-containing materials. Its stability and reactivity are influenced by factors like pH and temperature.