Appearance White to off-white powder Conforms
Identification IR,H1-NMR Conforms
Water ≤1.0% 0.2%
Residue on ignition ≤0.5% 0.1%
Meting point 186~189℃ 186.5~188.6 ℃
Heavy metals ≤20 ppm Conforms
Related substance
Total impurities ≤1.0% 0.3%
Single impurities ≤0.5% 0.02%