• Sodium Metabisulfite
  • Sodium Metabisulfite
Sodium Metabisulfite

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  • Specfication
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White or light yellow powder, it is soluble in water and alcohol.
Bleaching agent for textile,Colors stripper and dechlorination, preparation of indigo vat dyes, Solubilizing and acidyfing agent for leather, Bleaching agent for paper pulps,preservative and sterilisation agent for food industry. 
Index Standard
Food grade Tech grade
Purity 97%min 97%min
SO2 65%min 65%min
Na2SO4 2.0%max 2.0%max
Water insoluble 0.05%max 0.05%max
Particle size (200 mesh) 85%min 85%min
PH Value 4.5-5.5 4-6
Fe 5ppm max 5ppm max
Heavy metal 10ppm max --
As 1ppm max --