|
Anhydrous sodium sulfate ( glaubers salt ) standard (GB6009-2003) |
| Item |
Value |
|
|
|
|
|
| |
1 |
|
2 |
|
3 |
|
| |
Premium grade |
First grade |
Premium grade |
First grade |
Premium grade |
First grade |
| Na2SO4 / % ≥ |
99.3 |
99.0 |
98.0 |
97.0 |
95.0 |
92.0 |
| Water insoluble matter % ≤ |
0.05 |
0.05 |
0.10 |
0.20 |
- |
- |
| Ca Nad Mg (as Mg ) % ≤ |
0.10 |
0.15 |
0.30 |
0.40 |
0.60 |
- |
| Oxide (as Cl ) % ≤ |
0.12 |
0.35 |
0.70 |
0.90 |
2.0 |
- |
| Fe (as Fe ) % ≤ |
0.002 |
0.002 |
0.010 |
0.040 |
- |
- |
| Moisture % ≤ |
0.10 |
0.20 |
0.50 |
1.0 |
1.5 |
- |
| Whiteness(R457) % ≥ |
85 |
82 |
82 |
- |
- |
- |
|
|