Sodium Metabisulphite Use

Sodium metabisulfite is a white crystalline powder that is commonly used as a preservative, antioxidant, and reducing agent in various industries. In the food industry, it is used to preserve the color and flavor of dried fruits, vegetables, and seafood, as well as to prevent browning in fresh-cut produce.

Sodium metabisulfite is also used in the production of wine and beer as a sterilizing agent and to prevent oxidation. It can be added directly to the must or wort, or dissolved in water and added during bottling.

In the textile industry, sodium metabisulfite is used as a bleaching agent for wool and silk, as well as a reducing agent for vat dyes.

However, it should be noted that sodium metabisulfite can cause allergic reactions in some people, particularly those with asthma. It can also react with certain other chemicals to produce harmful gases, so proper handling and storage are important.