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HomeProduct name listBarium sulfite

Barium sulfite

  • CAS NO.:7787-39-5
  • Empirical Formula: BaH4O3S
  • Molecular Weight: 221.42
  • MDL number: MFCD00040662
  • EINECS: 232-112-2
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2023-10-17 17:11:53
Barium sulfite Structural

What is Barium sulfite?

Description

Barium Sulfite can be prepared by reacting sodiumsulfite with bariumchloride:
BaCl2+ Na2SO3→BaSO3+ 2NaCl
Barium Sulfite occurs as white, monoclinic crystals with a density of 4.44 g/cm3. Its solubility in water is low (0.001125 g/100 ml) and it is insoluble in ethanol. When heated, it decomposes at 480°C to the oxide and SO2 gas.
It has been used as a weighting material on oil-drilling rigs to prevent “blow out” during drilling operations. This salt is used for such purposes, presumably because of its ability to absorb SO2 and H2S gases trapped in the rocks as drilling proceeds. The demand for barium sulfite is low.
Barium sulfite is available in limited quantities, commercially.

Chemical properties

White powder, decomposed by heat. Soluble in dilute hydrochloric acid; insoluble in water.

The Uses of Barium sulfite

In paper manufacture.

Preparation

Barium sulfite is produced by the reaction of barium hydroxide, water and sulfur dioxide, or by the reaction of barium hydroxide and potassium bisulfite.

Properties of Barium sulfite

Melting point: decomposed by heat [HAW93]
Density  4.440
solubility  insoluble in ethanol
form  white monoclinic crystals
color  white monoclinic crystals, crystalline
Water Solubility  0.0197g/100g H2O (20°C); 0.0018g/100g (80°C); soluble dilute HCl [KIR78] [HAW93]
Solubility Product Constant (Ksp) pKsp: 9.3

Safety information for Barium sulfite

Computed Descriptors for Barium sulfite

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