What is the use of sodium metabisulphite

Dear student,
The various uses of sodium metabisulfite are as follows:
1)It is used as a preservative in various food products.
2)It is used as a main ingredient to make wine and beer.
3)It is used as a cleaning agent and for sanitization purposes.
4)It is also used in photography.
5)It plays an major role as an antioxidant and forms a primary source of sulphur dioxide in the production of wine.
6)It is also used as a bleaching agent to form coconut cream.
7)It plays an important role in water treatment plants and industries to remove the residuals of chlorine used to treat wastewater.
Regards

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Industrial Uses. Many chemical properties of Sodium Metabisulfite or sodium pyrosulfite make it a versatile compound useful in many applications. It can eliminate dissolved oxygen in waste water and in pipes. It functions as a bleaching agent, which is useful in making paper pulp, cotton and wool.
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Industrial Uses. Many chemical properties of Sodium Metabisulfite or sodium pyrosulfite make it a versatile compound useful in many applications. It can eliminate dissolved oxygen in waste water and in pipes. Itfunctions?as a?bleaching agent , which is useful in?making?paper pulp, cotton and wool.
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