Barium Sulphate

Barium sulphate is an inorganic compound with the chemical formula BaSO4. It is a white crystalline solid that is odorless and insoluble in water.

Industrial-grade barium sulphate can be used in coatings to improve its thickness, surface hardness, and resistance to abrasion, water, heat, and impact. It can also be used as a filler for plastics to increase the density of the polymer in vibrational mass damping applications, especially in polypropylene and polystyrene plastics.

Identification

CAS

7727-43-7

PubChem

24414

ChemSpider

22823

SMILES

[Ba+2].[O-]S([O-])(=O)=O

InChI

1/Ba.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2

InChIKey

TZCXTZWJZNENPQ-NUQVWONBAD

EINECS

231-784-4

ChEBI

133326

RTECS

CR060000

ATC Code

V08BA01

Properties

Chemical Formula

BaSO4

Molar Mass

233.43 g·mol-1

Appearance

White crystal or powder

Density

4.5 g/cm3

Melting Point

1580°C

Solubility (Water)

0.0002448 g/100 mL (20°C)

0.000285 g/100 mL (30°C)

Solubility Product Ksp

1.08×10-10 (25°C)

Barium sulphate is also called barite in nature, which is a natural ore whose colour is mainly determined by the type and amount of impurities it contains; pure barite is colourless and transparent.

Barite is used in added-value applications which include filler in paint and plastics, sound reduction in engine compartments, coat of automobile finishes for smoothness and corrosion resistance, friction products for automobiles and trucks, radiation shielding concrete, glass ceramics, and medical applications.

Barium sulphate for industrial use is usually divided into three categories – natural barium sulphate, precipitated barium sulphate, and nano barium sulphate. They are used as fillers in the production of coatings, plastics, rubber, glass, ceramics, friction materials, etc. Hoyonn offers various types of barium sulphate products to satisfy your demands.

Natural Barium Sulphate

Natural barium sulphate is made from high-quality barite ore that has been selected, cleaned, polished and dried. It is usually used in the production of white pigments or as a filler in paint, plastic, and ink industries.

Precipitated/Synthetic Barium Sulphate

Precipitated barium sulphate is produced by the chemical reaction between barium sulphide and sodium sulphate solution (BaS + Na2SO4 → BaSO4↓ + Na2S), which has higher purity and whiteness than the natural one. It can be used as a filler in mid- to high-end coatings, plastics, rubber, glass, and ceramics due to its high stability.

Modified Nano Precipitated Barium Sulphate

Modified nano precipitated barium sulphate has ultrafine particle size that its D50 is controlled between 0.2μm-0.4μm. It can be used in production of transparent functional filling masterbatches, automotive coatings, modified plastics, etc.

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