BARIUM CARBONATE
Barium carbonate is the inorganic compound.Barium carbonate's formula BaCO3. Like most alkaline earth metal carbonates, it is a white salt that is poorly soluble in water. It occurs as the mineral known as witherite. In a commercial sense, it is one of the most important barium compounds.
| Physical state at 20 °C : | Solid |
| Odour threshold : | No data available |
| pH value : | Not applicable. |
| Melting point [°C] : | 811°C |
| Decomposition point [°C] : | 1300°C |
| Critical temperature [°C] : | N/A |
| Auto-ignition temperature [°C] : | N/A |
| Flammability (solid, gas) : | N/A |
| Flash point [°C] : | N/A |
| Boiling point [°C] : | N/A |
| Initial boiling point [°C] : | N/A |
| Final boiling point [°C] : | N/A |
| Evaporation rate : | N/A |
| Vapour pressure [20°C] : | N/A |
| Vapour pressure mm/Hg : | N/A |
| Vapour density : | N/A |
| Density [g/cm3] : | 4,43 |
| Relative density, gas (air=1) : | N/A |
| Relative density, liquid (water=1) : | N/A |
| Solubility in water [% weight] : | Slightly soluble |
| Solubility in water : | N/A |
| Log Pow octanol / water at 20°C : | No data available. |
| Solubility : | N/A |
| Viscosity at 40°C [mm2/s] : | N/A |
| Explosive properties : | N/A |
| Explosion limits - upper [%] : | N/A |
| Explosion limits - lower [%] : N/A | N/A |
| Oxidising properties : | No data available. |
Barium carbonate is widely used in the ceramics industry as an ingredient in glazes. It acts as a flux, a matting and crystallizing agent and combines with certain colouring oxides to produce unique colours not easily attainable by other means.
Dosage
The kinetics of decomposition of barium carbonate in nitrogen and in vacuo have been established using isothermal weight loss measurements. ... The observed activation energy for the decomposition of barium carbonate was _ 60 kcal/mole in the temperature range from 800°C to 1000oC.
Barium is a white liquid that is visible on X-rays. Barium passes through the digestive system and does not cause a person any harm.