Sodium Metabisulphite

Formula: Na2S2O5

M.W.: 190.10

Appearance: White or slight yellow crystalline powder.

Specifications: 97% Min

Na2S2O5: 97% min

SO2:  65%min

Fe:  0.003% max

Water Insoluble: 0.05% max

As:  0.0001% max

PH: 4.0 - 4.8

Heavy Metals (Pb):  0.0005% max

Package: in 25kg p.p.wovened bags