SODIUM PYROSULPHITE
Product information
CAS No.
7681-57-4
EC No.
231-673-0231-673-0
Summary formula
Na₂S₂O₅.
ADR
YES
Physical form
A white or slightly yellowish crystalline powder with a characteristic sulfur dioxide odor.
Application
- Food industry: Used as a food additive (E223) acting as a preservative and antioxidant, preventing products from spoiling and preserving their color.
- Photographic industry: Used as a reducing agent in photo development processes.
- Textile industry: Used for bleaching fabrics and as a reducing agent in dyeing processes.