• Sodium disulphite
• Sodium pyrosulphite

This product is available in three grades:

• Photo
• Food
• Technical

Food

• As a preservative in fruits and starch
• As an enzyme inhibitor in melanin formation (black and brown spots)

Treatment of waste water
As an antichlor and in the detoxification of cyanide and chromate

Textile 
For bleaching wool and jute

Gold mining
To destroy cyanides

Paper and pulp

• For bleaching ground wood
• As an antichlor

Photography and film 
For developer solutions and acidifying fixing baths