CAS number : 7757-83-7
Molecular weight :126.04
Molecular formula/chemical symbol : Na2SO3
Description :
Colorless monoclinic Crystals. Soluble in water, its aqueous solution is alkaline reaction; insoluble in ethanol.
USES :
For rayon stabilizers, fabric bleach, photographic developer transfection drift deoxidizer, perfumes and dyes reductant, papermaking lignin removal, etc.
Keywords:Functional Chemicals
Report :
|
TEST ITEMS |
TEST RESULT |
|
|
|
( AR) |
(CP) |
|
Na2SO3 |
≥97.0 |
95.0 |
|
Clarity Test |
Qualified |
Qualified |
|
Water insoluble matter |
≤0.005 |
0.01 |
|
Acidic sulfite (NaHSO3 count) |
Qualified |
Qualified |
|
Free alkali (Na2CO3) |
≤0.2 |
0.3 |
|
Chloride (Cl) |
≤0.005 |
0.02 |
|
Thiosulfate (S2O3) |
≤0.005 |
0.02 |
|
(Fe) |
≤0.0005 |
0.002 |
|
(As) |
≤0.0001 |
0.0005 |
|
Heavy metals (as Pb) |
≤0.001 |
0.002 |
