Barium carbonate CAS 513-77-9, barium carbonate
barium carbonate
| Chinese name | barium carbonate |
| English name | Barium carbonate |
| Chinese alias | C.I. Pigment white 10; precipitated barium carbonate; barite; nano-barium carbonate; high purity barium carbonate; high purity barium carbonate BC-16; barium carbonate (1:1); granular barium carbonate; barium carbonate ore |
| RN CASE | 513-77-9 |
| EINECS number | 208-167-3 |
| molecular formula | CBaO3 |
| molecular weight | 197.337 |
| Dangerous goods sign |  Xn:Harmful |
| Risk Terminology | R22; |
| security terms | S24/25; |
| physicochemical properties | Properties, industrial products are white powder. Melting point 1740 ℃ Relative density 4.43 Solubility, almost insoluble in water, insoluble in alcohol, soluble in acid and ammonium chloride solutions. There are three crystalline states of α, β and γ. The industrial product is a white powder. The relative density is 4.43. The melting point of α-type is 1740 ° C (90.9 × 103Pa). Beta-type converts to alpha-type at 928 ° C, and gamma-type converts to beta-type at 811 ° C. Almost insoluble in water, insoluble in alcohol, soluble in acid and ammonium chloride solution. Decomposes to form barium oxide and carbon dioxide at 1450 ° C. Decomposes in case of acid and interacts with sulfuric acid to form a white barium sulfate precipitate. Slightly hygroscopic. Toxic. |
| purpose | Used in the production of picture tube glass shells, electronic ceramics and purified water, the production of pigments, coatings or other barium salts Used to make optical glass, barium magnetic materials, etc It is an important chemical raw material for the production of kinescope glass, magnetic materials and advanced optical glass. Used in the preparation of fireworks, signal flares, and as accessories for ceramic coatings and optical glass Used for the manufacture of electronic ceramics, PTC thermistors, capacitors and other electronic components Mainly used in the manufacture of optical glass, picture tube glass, barium magnetic materials and capacitors, etc., and also used in steel carburizing and metal surface treatment. It is a raw material for the manufacture of other barium salts and ceramics, enamels, pigments, coatings, rubbers, electrodes. It can also be used as a water purifier, a rodenticide, and a catalyst for oxidation reactions. Mainly used in the manufacture of optical glass, picture tube glass and barium magnetism |
| upstream raw material | Soda ash, carbon dioxide, coal, limestone, barite |
| downstream products | Barium nitrate, barium chloride, sodium tripolyphosphate, barium fluoride, barium nitrate, barium chloride, carbon monoxide medium (high) temperature shift catalyst B117 type, medium temperature shift catalyst DGB type, medium temperature shift catalyst B109, ammonia synthesis catalyst A110-1, A110-1-H pre-reduction ammonia synthesis catalyst |
