CAS No.: 7775-14-6
Molecular Formula: Na2S2O4
Molecular weight: 174.11
Package: 50kg per iron drum
Specification:
|
items |
Index | |
|
88% |
90% | |
|
Appearance |
White crystalline powder | |
|
odor |
Odorless or with a slight odor of sulfur dioxide | |
|
Na2S2O4 % |
≥88 |
≥90 |
|
Water Insolubles% |
≤0.2 |
≤0.2 |
|
Heavy Metal Contentppm |
≤1 |
≤1 |
|
Na2CO3 (%) |
0.9-5.0 |
0.9-5.0 |
|
Fe(ppm) |
≤20 |
≤20 |
|
Shelf life (Months) |
12 |
12 |