熔点 300 °C
比旋光度 6.3 º (c=4, 6 N HCl 200 ºC)
折射率 -9 ° (C=3, H2O)
溶解度 1 M HCl: 50 mg/mL
质量标准
Test Items Standard Appearance White fine crystals Assay 99.0 to 101.0% Specific Rotation [α]20/D +7±1°, c = 5% in 5 M HCl Melting point ≥300 °C Chloride (Cl) Not more than 0.10% Heavy Metals (Pb) Not more than 10 PPM Loss on Drying Not more than 0.20% Residue on Ignition (Sulfate) Not more than 0.20%