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Potassium Metabisulphite 97%

Potassium Metabisulphite 97% Group Picture
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£16.75 to £94.45

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  Pack Size List Price Qty  
photo_camera 100g
GPC9925-X
£16.75
photo_camera 250g
GPC9925-2X
£31.45
photo_camera 500g
GPC9925-5X
£52.45
photo_camera 1Kg
GPC9925-Y
£94.45
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What is Potassium Metabisulphite? Also known as potassium pyrosulfite, it is a white crystalline powder with a pungent sulphurous odour. It's primarily used as a preservative, antioxidant, and chemical sterilant in various applications, including food and beverage production, winemaking, and water treatment. In winemaking, it's used to inhibit the growth of wild yeasts and bacteria, effectively preventing spoilage. It also acts as an antioxidant, improving the physical stability and shelf life of beer and wine. 

Consistent Quality: We provide only high-quality Potassium Metabisulphite, ensuring reliable and consistent performance for all applications.

Shipped from Manchester, UK Facility: Sourced and packaged in non-toxic, chemical-resistant containers to ensure safe handling and preserve product quality during transport.

Frequent Uses

Food and Drink
Prevents microbial growth and oxidation, thus preserving the colour, flavour, and freshness of food and beverages. 

Winemaking
It's a crucial ingredient in winemaking, acting as a sterilant to eliminate unwanted microorganisms and as an antioxidant to prevent oxidation and browning. 

Water Treatment
Can be used to remove free chlorine from tap water, preventing off-flavours in beer. 

  • Reducing agent in chemical reactions
  • Preservative and antioxidant in analysis
  • pH adjustment in certain reactions
  • Participates in oxidation-reduction processes
  • Used in polymerisation reactions
  • Metal surface treatment and passivation
  • Component in photographic developers
  • Studied as an antioxidant in research

CAS Number: 16731-55-8

EINECS: 240-795-3

Molecular Weight: 222.32

Molecula Formula: K2S2O5

Physical Description: White Crystalline Powder

Solubility (2% in water): Clear, Colourless Solution

Iron (Fe) <10ppm

Selenium (Se): <5ppm

Arsenic (As): <3ppm

Lead (Pb): <2ppm

Mercury (Hg) <1ppm

Heavy Metals (as Pb): <10ppm

Cas Number: 16731-55-8

Einecs Number: 240-795-3

Hazard Phrases: H318,EUH031

Prec Phrases: P280,P305+P351+P338

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