Sodium metabisulfite

Sodium metabisulfite

Molecular formula : Na₂S₂O₅

Molecular weight : 190.10

Appearance : white or light yellow crystalline powder , relative density is 1.4 .

Uses: It can be used as the material of medicine, or used as curing agent of rubber; It also can be used as dechlorinating agent and scouring agent of textile; It also can be used in the process of leather Moreover, it can be used as the material of fine chemicals, or used as developer; In food industry, It can be used as bleaching agent, loosening agent, antisepsis bactericide and antioxygen antistaling agent.

Quality standard : GB1893-1998

Item	Company standard
Assay ( as Na2S2O5 ) ≥	96.5
Fe % ≤	0.005
Clarity	clear
Heavy metal (Pb)% ≤	0.001
As % ≤	0.0002

Packing : External packing is PP woven bag, Internal packing is PE bag, the thickness ≥0.05mm.