Formula:

Na₂S₂O₅

M.W.:    

190.10

Appearance:

White or slight yellow crystalline powder.

Specifications: 

Na₂S₂O₅:96% min
Content (SO₂):65% min
Iron:0.005% max
Water Insoluble:0.05% max
As:0.0002% max
PH:4.0 - 4.6
Heavy Metals (Pb):0.002% max

Package: 

in 25kg p.p.wovened bags