Items | Standard |
Specifications | NF13 (A) |
Appearance | White crystal or crystalline powder |
Purity w/% | ≥98.0~101.0 |
Loss on drying w/% | ≤0.5 |
PH Value (100g/L water solution) | 5.5~7.5 |
Sulfate Content (SO4) w/% | ≤0.10 |
Arsenic (As) w/% | ≤0.0001 |
Selenium w/﹪ | ≤0.003 |
Heavy metals (Pb) w/% | ≤0.001 |
Transparency (100g/L water solution) | ≥95.0% |
Cyclohexylamine w/% | ≤0.0025 |
Dicyclohexylamine w/% | ≤0.0001 |
Sulfamic acid w/% | ≤0.15 |
Absorbance (100g/L water solution) | ≤0.10 |