| 释义 |
thorium dioxide
thorium dioxiden. A heavy white powder, ThO2, obtained from monazite and used mainly in ceramics, glass, and gas mantles, as a catalyst, and as a radiopaque diagnostic aid. Also called thoria, thorium oxide.thorium dioxide n (Elements & Compounds) a heavy insoluble white powder used in incandescent mantles. Formula: ThO2. Also called: thoria thorium dioxide
thorium dioxide[′thȯr·ē·əm dī′äk‚sīd] (inorganic chemistry) ThO2 A heavy, white powder soluble in sulfuric acid, insoluble in water, melts at 3300°C; used in medicine, ceramics, flame spraying, and electrodes. Also known as thoria; thorium anhydride; thorium oxide. |