Tests | Specification |
Appearance | White crystal |
Melting point | 150ºC~155ºC |
Identification | IR should matches reference |
260nm Ultraviolet absorbance(1M aq.) | ≤ 0.06% |
280nm Ultraviolet absorbance(1M aq.) | ≤ 0.05% |
290nm Ultraviolet absorbance(1M aq.) | ≤ 0.05% |
PH(5% aq.) | 4.2~5.0 |
Heavy Metals | ≤5 ppm |
Ferric ion | ≤5 ppm |
Loss on drying | ≤0.5% |
Assay | 99.0 ~ 101.0% |