FMC Foret markets two different quality levels of Sodium Bisulphate (concentration 40%), depending on the applications to which they are destined:

• Food Grade, as a food preservative.
• Drinking Water Grade, as a reducing agent (dechlorination).
• Technical Grade, used as a reducing agent and as a bleach for paper, etc.

USES

• Food: Preservation of fruit, crustacean vegetable juices (antimelanosic agent).
• Beer industry: Sterilization of barrels, tanks and general equipment.
• Tanning: Reducing agent for dichromates in chrome tanning.
• Paper: Antichlorine agent after bleaching with hypochlorite.
• Textiles: Antichlorine agent in bleaching baths Wool bleaching.
• Water Treatment: Reducing agent.
• Miscellaneous:
• Photography: Reducing agent, preservative in fixers.
• Synthetic fibres: Catalyst in polymerization Introduction of SO3 radicals.
• Surfactants: Reagent in the manufacture of sodium alkylsulphosuccinate.

PROPERTIES

Appearance: A slightly yellowish liquid.
Concentration: 40%.
Chemical Formula: NaHSO₃.