Sodium Sulphite

H.S Code: 28321000
Molecular Formula: Na₂SO₃
Property: white powder
Packing: 25kg plastic woven bags
Use: It is mainly used in dyeing, printing, drug, papermaking, chemical fiber, photo and food industry.
Sodium Sulphite(Industry Grade)(HG/T 2967—2000)

Specifications	Premium grade	First grade	Second grade
Sodium Sulphite% ≥	97.0	96.0	93.0
Fe %≤	0.003	0.005	0.02
Water insoluble matter %≤	0.02	0.03	0.05
Free alkali %≤	0.10	0.40	0.60
Sulfate radical %≤	2.5	-	-
Sodium Chloride %≤	0.10	-	-

 

 

 

Sodium Sulphite (Food Grade)(GB 1894—92)

Specifications	Standard
Sodium Sulphite%≥	96.0
Fe% ≤	0.01
Water insoluble matter %≤	0.03
Free alkali %≤	0.60
Sulfate radical %≤	2.5
Heavy metals(Pb)% ≤	0.001
As % ≤	0.0002