| Anhydrous
sodium sulphite(sulphite)--High
pure 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 SO2 in 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 |
98.6 |
| Fe≤ % |
0.0005 |
0.0003 |
| Insoluble in water≤ % |
0.005 |
0.003 |
| Na2CO3≤
% |
0.1 |
0.001 |
| Na2SO4≤
% |
1.5 |
0.62 |
| Nacl≤ % |
0.005 |
0.0005 |
| Pb≤ % |
0.001 |
0.0002 |
| As≤ % |
0.0001 |
0.00002 |
| Sodium thiosulfate≤ % |
0.01 |
0.001 |
| Appearance of soluble |
white |
|
