Product Description

Commodity name: Sodium Hydrosulfite
Formula : Na2S2O4
CAS No. : 7775-14-6
Process : Sodium Formate Process
Production Stardard: HG2074-91 promulgated by Chemical Industry Ministry of P. R. China and Japan JISK 1476-92 standard.

Product Feature

Smell：flavourless or smell of sulfur dioxide
Storage time limit: 12 months
Packing：50 kgs net in new light-blue iron drums with doule inner polybags

Product Specification/Models
Appearance : White Free-Flowing Crystalline Powder
Purity: 85% min. 88% min. 90% min.
Water Insoluble: 0.1% MAX
Fe: 0.002% max.
Zn: 0.0001% max.
Pb: NO

Application
reducing agent, sulfonating agent, cation source for textile, pulp and paper,leather, foods and beverages, polymers, photograghics, chemical processing, cleaners, water treatment, gas purification, and environmental improvement.