■ Oxygen scavenging and chlorine removal

This product is used in steam boiler water treatment to remove dissolved oxygen and to remove excess chlorine from wastewater. It is a white granular product that is readily soluble in water.

■ Reducing and sulfonating agent

This product is used as a sulfonating agent and reducing agent in chemical process with significant applications for surfactants and polymerization. It is a white granular product that is readily soluble in water.

■ Chrome and metals reduction

This product is used to reduce chrome and other metals. It is a white granular product that is readily soluble in water.

■ Solubilizing agent

This product is used as a solubilizing agent in vegetable tanning. It is a white granular product that is readily soluble in water.

■ Removal of cyanide

This product is used to remove cyanide from the tailings of precious metal mining sites. It is a white granular product that is readily soluble in water.

■ Reducing agent for dyes

This product is used in the textile industry as as reducing agent for dyes. It is a white granular product that is readily soluble in water.

■ Product data and typical properties

Formula: Na₂S₂O₅
Molecular Weight: 190.11
pH of 5% Solution: 4.3
Bulk Density, lb/ft³: 86
Free flowing, white to slightly yellow, fine granular crystal having a characteristic odor of sulfur dioxide and is soluble in water.

■ Main product specifications

Sodium Metabisulfite (Na2S2O5) 98.0 – 100.0 %
Iron (Fe) 0.0 – 7.0 ppm
Sodium Sulfite (Na2SO3) 0.0 – 1.0 %
NSF Certified.

■ Handling and storage

Shelf Life: Nominally 36 months when properly stored in original packaging.
Storage Conditions: Controlled indoor environment that is cool, dry, and well ventilated.

■ Packaging

• 50lb sealed polyethylene bags
• 2000lb polypropylene sacks
• 3000lb polypropylene sacks
• Custom sack sizes upon request