29. 01. 2020.

Potassium metabisulphite

E224

Potassium metabisulphite, known as the “guardian of wine”, is a white crystalline powder of rough, sulfur odor.

It serves as an antioxidant or chemical sterilizator. It is also used as a food additive.

Potassium metabisulphite is very common addition to wine, in which it forms SO2
which prevents growth of wild organisms and acts as a powerful antioxidant, protecting the color and delicate flavor of wine.

It is also used to clean wine-making equipment. In production of beer, it prevents growth of wild yeasts, bacteria and fungi in a process called stabilization.

It is also used to neutralize chloramines added to tap water as a disinfectant.

CAS:                          16731-55-8
Molecular formula:            K2O5S2
Molecular mass:               222,32 g mol−1
 
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