Product name: sodium hydrosulfite
CAS No.: 7775-14-6
Packaging Detail: 50KG IRON DRUM
Formula: Na2S2O4
Appearance: Free-flowing white crystalline powder
Specification
|
Test item
|
Standard
|
|
Purity(wt%)
|
85.0min
|
|
Na2CO3(wt%)
|
2-6
|
|
Na2S2O3(wt%)
|
1-1.5
|
|
Na2S2O5(wt%)
|
4-7
|
|
HCOONa (wt%)
|
1.5-2.5
|
|
Fe(ppm)
|
20max
|
|
Water Insolubles:
|
0.1% max
|
|
Total other heavy metals
|
10ppm max
|