sodium pyrosulfite

Product Description

Name: sodium pyrosulfite / sodium metabisulphite CAS NO.: ********4 MF: Na2S2O5 Grade Standard: HG/T********8 GB********8 Type: Industrial Top-Grade, Industrial I-Grade Appearance: white or yellowish powder Specifications: Items Industrial Grade-high class Industrial Grade-I Food Grade Na2S2O5 %(min) *6.5 *5 *6.5 Fe %(max) 0.**5 0.*1 0.**3 Water insolubles%(max) 0.*5 0.*5 0.*5 Arsenic, (As)% (max) 0.**1 0.**1 0.***1 Heavy Metal, (Pb)% (max) 0.***2 PH 4.**4.6 4.**4.6 4.**4.6 Solubility in water (*0oC) **0g/l **0g/l **0g/l Packing: *5kg/bag or *0kg/bag, External polypropylene woven bag lined with plastic bag, krafpaper bags. Usage: Be used as decolourant, mordant, reducing agent, latex concreting reagent, and also be used for organic synthesis , pharmacy and spice etc