Detailed Description: |
Cas No. :7757-83-7
Anhydrous
sodium 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 |
|