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Anhydrous sodium sulphite(sulphite)--Refined Grade

Molecular Formula: Na2SO3
Molecular Weight: 126.04
CAS NO: 7757-83-7

Appearance: white crystalline powder
Character: with the smell of sulfur dioxide , lose SOin the air,become the sulfate Solubility: soluble in water,slightly soluble in alcohol,insoluble in liquid ammonia

Usages: Main used in printing and dyeing,paper making,photo,food,pharmacy,petroleum chemical and so on
Packing: 25kg PE bag or 1000kg/bag Product specifications:

Items
Index
Standard
Reference value
Na2SO3 ≥%
98.0
98.3
Fe≤ %
0.002
0.006
Insoluble in water≤ %
0.01
0.002
Na2CO3≤ %
0.3
0.12
Na2SO4≤ %
1.5
1.2
Nacl≤ %
0.02
0.003
Pb≤ %
0.002
0.0005
As≤ %
0.0005
0.00005
Sodium thiosulfate≤ %
0.02
0.01
Appearance of soluble
white
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