alumiinaate

Alumiinaate is a term used to describe a compound containing the aluminate anion, which has the chemical formula [Al(OH)4]− or its dehydrated forms. These anions are derived from aluminum hydroxide. Alumiinaates are typically found in alkaline solutions and are important in various chemical processes. They can be formed by dissolving aluminum metal or aluminum hydroxide in strong bases like sodium hydroxide. Common examples include sodium aluminate (NaAl(OH)4) and potassium aluminate (KAl(OH)4). Alumiinaates play a role in the production of alumina, the purification of water, and in the cement industry. The solubility of alumiinaates is dependent on the pH of the solution. In acidic conditions, aluminum ions precipitate out as aluminum hydroxide. The structure of the aluminate anion can vary, with different coordination numbers for the aluminum atom depending on the conditions. The presence of alumiinaates is significant in geological contexts as well, found in certain minerals.