Barium Sulphate 98% (Industrial/ Food/ Medical Grade)
|Min. Order (Tons)||FOB Price|
|20+||US $160-490 / Ton|
CAS No.: 7727-43-7
EINECS No.: 231-784-4
1. White powder with toxicity;
2. Insoluble to water or alcohol;
3. With hygroscopicity in air and without sulfide pollution;
4. Dissoluble to benzene,and some other non-polar solvant;
5. It will dissolve and generate stearate acid and relative barium salts while mixed with strong acids.
6. The heat resistance of barium stearate is the best during all the alkaline metal stearate.
1) Drilling fluids
About 80% of the world's barium sulfate production, mostly purified mineral, is consumed as a component of oil well drilling fluid. It increases the density of the fluid.
The majority of synthetic barium sulfate is used as a component of white pigment for paints. In oil paint, barium sulfate is almost transparent, and is used as a filler or to modify consistency.
3) Barium sulfate is frequently used clinically as a radiocontrast agent for X-ray imaging and other diagnostic procedures. It is most often used in imaging of the GI tract during what is colloquially known as a 'barium meal'. It is administered, orally or by enema, as a suspension of fine particles in an aqueous solution (often with sweetening agents added). Although barium is a heavy metal, and its water-soluble compounds are often highly toxic, the low solubility of barium sulfate protects the patient from absorbing harmful amounts of the metal. Barium sulfate is also readily removed from the body, unlike Thorotrast, which it replaced. Due to the relatively high atomic number (Z = 56) of barium, its compounds absorb X-rays more strongly than compounds derived from lighter nuclei.
4) Niche uses
Barium sulfate is also used during the procedure of the soil pH test. In this test it is used so that it precipitates out any particles (usually clay particles) that would otherwise 'cloud' solution preventing one from seeing the colour of the pH indicator i. e. The result of the test. It is also used in Episal salt, brake linings, anacoustic foams, powder coatings, and root canal filling.
In colorimetry barium sulfate is used as a near-perfect diffuser when measuring light sources.
In metal casting, the moulds used are often coated with barium sulfate in order to prevent the molten metal from bonding with the mould.
5) Catalyst support
Barium sulfate is a low surface area material used as a support for selectively hydrogenating functional groups sensitive to overreduction. With a low surface area, the contact time of the substrate with the catalyst is shorter. A supported palladium catalyst on barium sulfate, and doped (poisoned) with quinoline hydrogenates alkynes into cis-alkenes. The quinoline and the special support prevent overreduction to the alkane.
As barium compounds emit a green light when burned, barium salts are often used in green pyrotechnic formulas, but the nitrate and chlorate salts are more common. Barium sulfate is commonly used as a component of "strobe" pyrotechnic compositions.
7) Copper Industry
As barium sulfate has high burning point and is insoluble in water, it is used as a coating material in casting of copper anode plates. The anode plates are cast in copper molds, so to avoid the contact of the liquid copper and the solid copper mold, a solution of barium sulfate in water is used as a coating material on the mold surface. Thus when the liquid copper solidifies in form of an anode plate it can be easily removed from its mold.
|ATC code||V08 BA01|
|Molar mass||233.43 g/mol|
|Melting point||1345 ° C|
|Boiling point||1600 ° C (decomp)|
|Solubility in water||0.0002448 g/100 mL (20 ° C)|
0.000285 g/100 mL (30 ° C)
|Solubility product, Ksp||1.0842 × 10-10 (25 ° C)|
|Solubility||insoluble in alcohol, soluble in concentrated sulfuric acid|
|Refractive index (nD)||1.64|
|Std enthalpy of|
formation Δ fHo298
|− 1465 kJ· mol− 1|
|132 J· mol− 1· K− 1|
|EU classification||not listed|