
| item | standard |
| characers | white Crytal Powder |
| identification | complies With The Limit Test |
| clariy And Colour | complies With The Limit Test |
| assay | 99.5-101.0% |
| readily Carbonsable Substances | not Deeper Than Standard |
| sulphates | ≤150ppm |
| sulphater Ash | ≤0.1% |
| water | 7.5~9.0% |
| oxalic Acid |
≤350ppm |