
| SPECIFICATION | ||||
| ITEM | METHOD | STANDARD | RESULT | REMARK |
| NA2S | GB-T10500-2000 | ≥60.0% | PASS | |
| NA2SO3 | GB-T10500-2000 | ≤3.00% | PASS | |
| NA2S2O3 | GB-T10500-2000 | ≤3.00% | PASS | |
| FE | GB-T10500-2000 | ≤10ppm | PASS | |
| NA2CO3 | GB-T10500-2000 | ≤2.00% | PASS | |
| Water Insoluble | GB-T10500-2000 | ≤0.05% | PASS | |