[{"from": "human", "value": "Could you give me a brief overview of this molecule? [O-2].[O-2].[O-2].[Al+3].[Al+3]"}, {"from": "gpt", "value": "The molecule is a white odorless crystalline powder. Water insoluble. Properties (both physical and chemical) vary according to the method of preparation; different methods give different crystalline modifications. The variety formed at very high temperature is quite inert chemically.  alpha-Alumina is the main component of technical grade alumina. Corundum is natural aluminum oxide. Emery is an impure crystalline variety of aluminum oxide. (NIOSH, 2022)"}]