|
Index name |
Premium grade |
First grade |
Second grade |
|
sodium nitrate% |
≥99.5 |
≥99.3 |
≥98.5 |
|
Chloride% |
≤0.15 |
≤0.24 |
- |
|
sodium nitrite% |
≤0.01 |
≤0.02 |
≤0.15 |
|
sodium carbonate% |
≤0.05 |
≤0.10 |
- |
|
Moisture% |
≤1.5 |
≤1.8 |
≤2.0 |
|
Water insoluble matter% |
≤0.03 |
≤0.06 |
- |
|
Fe(Fe)% |
≤0.005 |
≤0.005 |
- |
