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Baryte

Sibelco PORTARYTE® natural baryte delivers a range of benefits, from improving UV and chemical resistance in coatings, to increased soundproofing in plastics and enhanced friction in brake linings.

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about

Baryte


Baryte (also referred to as barite or barytes) is the naturally-occurring form of barium sulphate (BaS04). It has a high specific gravity (4.5) and very low solubility.  

Sibelco’s natural baryte (known as PORTARYTE®) is used mainly in the following applications: 

  • Coatings: to improve UV resistance, sandability, chemical resistance and gloss control, to increase density, and as a cost-effective replacement for precipitated baryte. 
  • Polymers: to improve sound proofing in plastics and opacity in resin systems, to increase weight, and as a cost-effective replacement for precipitated baryte.  
  • Automotive: to improve friction in brake linings. 

Key characteristics of natural baryte include: 

  • high inertness  
  • high density, resulting in low oil absorption 
  • medium Mohs hardness of 3 
  • high refractive index of 1.64 
  • easy wetting 
  • easy dispersion  

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