[{"from": "human", "value": "Describe this molecule. [O][=Th][=O]"}, {"from": "gpt", "value": "The molecule is a white powder. Density 9.7 g / cm3. Not soluble in water. Used in high-temperature ceramics, gas mantles, nuclear fuel, flame spraying, crucibles, non-silicia optical glass, catalysis, filaments in incandescent lamps, cathodes in electron tubes and arc-melting electrodes."}]