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Potassium Metabisulfite- Industrial / Technical Grade

Potassium Metabisulfite
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Potassium metabisulphite is a white crystalline powder with a pungent sulfur odour. It is also known as potassium pyrosulfite. Its chemical formula is K2S2O5 and has monoclinic crystal structure which decomposes at 190 °C, yielding potassium oxide and sulfur dioxide:
K2S2O5(s) = K2O(s) + 2SO2(g)

It is mainly used as an antibrowning agent, antioxidant and preservative. It is a disulfite and is chemically very similar to Sodium Metabisulfite, with which it is sometimes used interchangeably.

Potassium metabisulphite is generally preferred out of the two as it does not contribute sodium to the diet. It is soluble in water and insoluble in ethanol.

Industrial/Technical Grade

Potassium metabisulphite is a light cream colored material, free from foreign particles with faint smell of sulphur dioxide gas. It is always acknowledged for its effectiveness, precise ph value and accurate composition. Extensively used as a photographic chemical, pharmaceutical chemical, laboratory reagent and in dyes in various industries including :


Potassium metabisulphite Industrial Grade
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Food Grade

Potassium metabisulphite is a food preservative, which preserves the natural color of food and protects food against bacteria. Food manufacturers use potassium metabisulphite to preserve the taste of dehydrated foods and to make these foods more palatable.


Sodium Bisulphite Industrial Uses
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Potassium Metabisulfite

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