Product Description

Synonyms: sodium pyrosulfite
Molecular Formula:Na2S2O5
Molecule Weight:190.10
CAS No：7681-57-4

Product Feature

Appearance:White or light yellow crystalline powder

25kg compound plastic woven bag with inner polythene liner; 1000kg or 1100kg Jumbo bags

Product Specification/Models

Content(Na2S2O5): 96% min.
Content(as SO2) : 65% min.
Iron(as Fe): 0.005% max.
Heavy metals(as Pb): 0.001% max.
Arsenic(as): 0.0002% max.
Water-insoluble: 0.05% max.

Application
bleaching agent for textile fibres;Colors stripper and dechlorination; preparation of Indigo Vat Dye;solubilizing and acidyfing agent for leather industries ;bleaching agent for paper pulps;preservative and sterilisation agent for food industries