Name |
Barium sulfate |
Synonyms |
C.I. 77120 C.I. Pigment White 21 Barite Bariumsulfate,precipitated Bariumsulfate bariumsulfuricum barium sulphate PRECIPITATED Blanc fixe barium sulfuricum Baryte Barytes Barium sulphate pricipitated Barium sulphate |
CAS |
7727-43-7 13462-86-7 |
EINECS | 231-784-4 |
InChI | InChI=1/Ba.H2O4S.2H/c;1-5(2,3)4;;/h;(H2,1,2,3,4);;/p-2/rBaH2.H2O4S/c;1-5(2,3)4/h1H2;(H2,1,2,3,4)/p-2 |
Molecular Formula |
BaSO4 |
Molar Mass | 233.391 |
Melting Point | 1580℃ |
Solubility | 0.0022 g/L (50℃) |
Physical and Chemical Properties |
properties colorless orthorhombic crystal or white shaped powder. colorless orthorhombic crystal or white amorphous powder. Relative density 4.50 (15 degrees C). Melting point 1580 °c. Polycrystalline transformation occurs at around 1150 °c. Significant decomposition began at about 1400 °c. Chemical stability. Practically insoluble in water, ethanol and acids. Soluble in hot concentrated sulfuric acid, dry easy to agglomerate. 600 C with carbon can be reduced to barium sulfide. |
Use | It is mainly used as a weighting agent for oil and natural gas drilling mud, and is also an important mineral raw material for extracting metal barium and preparing various barium compounds. The most important barium compounds in industry are barium carbonate, barium chloride, sulfuric acid, barium nitrate, barium hydroxide, barium oxide, barium peroxide, barium chromate, Barium manganate, barium chlorate, lithopone, barium polysulfide, etc. Barium compounds are widely used as raw materials and fillers for rubber, plastics, pigments, coatings, paper making, textiles, paints, inks, electrodes; Used as barium-based grease, oil refining, beet sugar, Rayon raw materials; Used as pesticides, sterilants, rodenticides, explosives, Green pyrotechnic, signal bomb, tracer, medical X-ray photography indicators; Also used in glass, ceramics, leather, electronics, building materials, metallurgy and other departments. Barium metal can be used for television and real |
Safety Description | S24/25 - Avoid contact with skin and eyes. |
inhalation can cause chest tightness, chest pain, Cough, etc. It is irritating to eyes. Long-term inhalation can cause barium pneumoconiosis. Staff should be protected and the workplace should be well ventilated. If the skin and eyes are touched, wash with running water immediately. Keep away from fire and heat source. Packaging is required to be sealed and not to be in contact with air. Should be stored separately from reducing agent, flammable, combustible, metal powder, etc.