Items | Standard | Result |
Appearance | Yellow crystalline powder | Conforms |
Assay | 97.0%min | 98.0% |
Aqueous reaction | Complies with the standard | Conforms |
Appearance of solution | Complies with the standard | Conforms |
Water insoluble | 0.025% max | 0.01% |
Sulphates | 0.01% max | 0.006% |
Ammonium | 0.002%max | 0.001% |
Iron | 0.001% max | 0.0008% |
Heavy metal | 0.0005% max | 0.0003% |
Alkaline and alkaline earth metal | 0.2%max | 0.08% |