Precipitated Barium Sulphate

CAS NO.: 7727-43-7
Molecular Formula: BaSO4
Molecular Weight: 233.39
Appearance:White Powder
Solubility: Almost insoluble in water, ethanol and acids, soluble in hot concentrated sulfur.
Packing: 25kg/bag,1000kg/bag

Precipitated barium sulphate is a white amorphous powder with a relative density of 4.50 (15 ℃) and a melting point of 1,580 ℃. Due to its high refractive index (1.63 to 1.65), it exhibits a white color and has a certain opacity. It is almost insoluble in water, ethanol, and acid, but can dissolve in hot sulfuric acid. It is easily made into mixed crystals with potassium permanganate, calcium carbonate, or metal nitrate. It can be reduced to barium sulfide with carbon at high temperatures.

Product Parameters

Precipitated Barium Sulphate

Item Specification
Appearance White Powder
Assay (as dry basis) ≥98.0%
Volatile matter at 105℃ ≤0.3%
Water soluble substances ≤0.3%
Iron (Fe) ≤30ppm
Whiteness ≥94
Oil Index ≤25g/100g
pH (10% suspension) 6.0-9.0
Residue on 325mesh Sieve ≤0.1%
Sulphide (as S) ≤0.003%
Particle Size (D50)



Precipitated Barium Sulphate is used as a filler for paint, printing ink, plastics, rubber and battery, surface coating agent of photographic paper and coated art paper, textile sizing agent, glass refining agent to eliminate bubbles and increase gloss, and also used in the pottery and also used in the pottery and porcelain, enamel, dyestuff, and etc.

  1. Paint & Coating
  2. Plastic & Rubber
  3. Ceramic & Glass
  4. Paper
  5. Cable
  6. Waterproof Material

Product Details