Sourcing Sodium Metabisulfite (SMBS)? ChemicalDekho connects you with primary producers like Aditya Birla Chemicals and specialized sulfur-chemical experts. Access high-purity material for food preservation and water purification.
Sodium Metabisulfite (CAS 7681-57-4) acts as a potent antioxidant and antimicrobial in the food industry (E223), preventing browning in fruits and seafood. In water treatment, it is the industry standard for removing residual chlorine from reverse osmosis (RO) membranes. Industrially, it is used as a reducing agent in textile dyeing and gold mining.
Verified listings offer Food Grade material complying with FSSAI/FCC standards and Technical Grade for bulk industrial applications.
Preservative (E223) & Antioxidant
Dechlorination (RO pre-treatment)
Prevents black spots in prawns
Antichlor & Bleaching agent
Cyanide detoxification agent
Sterilant for equipment
Deliming & Tanning auxiliary
Bleach neutralization
Leading petrochemical producers
Ready stock at Ports
Compliant transport
Harmful if swallowed. Causes serious eye damage. Contact with acids liberates toxic Sulfur Dioxide gas. Some people are highly sensitive to sulfites.
RO membranes are destroyed by chlorine. SMBS is injected into the feed water to instantly neutralize chlorine, protecting the expensive membranes.
Yes, it has a sharp, pungent smell of burning matches (Sulfur Dioxide). It should be handled in a well-ventilated area.
Yes, Sodium Metabisulfite is a purely inorganic chemical and suitable for vegan/halal food production.
It is hygroscopic and will slowly react with atmospheric moisture and oxygen to turn into Sodium Sulfate, losing its effectiveness as a preservative.