Barium Sulphate BP
Barium sulfate (or sulphate) is the inorganic compound with the chemical formula BaSO4. It is a white crystalline solid that is odorless and insoluble in water. It occurs as the mineral barite, which is the main commercial source of barium and materials prepared from it.
Used as a component of oil well drilling fluid. The majority of synthetic barium sulfate is used as a component of white pigment for paints
Molecular Formula: BaSO4
Molecular Weight: 233.4 g/mol
CAS No.: 7727-43-7
|Characters||It occurs as a fine, white or almost powder, free from gritty particles|
(a)Gives the reaction of sulphates
|pH||3.5–10.0, in a 10% (w/w) aqueous suspension|
|Solubility||Practically insoluble in water and organic solvents. Very soluble in acids and solutions of alkali hydroxides.|
|Acidity or alkalinity||Specified Test. Not more than 0.5ml of 0.01M hydrochloric acid or 0.01M of sodium hydroxide is required to change the color of the indicator.|
|Acid soluble substances||Not more than 0.3%|
|Oxidizable sulphur compounds||Specified Test.The color of the solution is more intense than that of the standard prepared at the same time and in the same manner, but omitting the potassium iodate.|
|Soluble barium salts||Not more than 10 ppm|
|Heavy Metals||Not more than 10 ppm|
|Loss on ignition||Not more than 2%|
|Assay||Not less than 97.5% and not more than 100.5%|
Shelf life, Storage and Packing
It should be stored in a segregated area in a cool and ventilated place away from combustible materials. Keep in a tightly closed container, sealed until ready for use. It is packed in 25kg or 50kg HDPE bags or drums as required.
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