外观Appearance                               white powder
溶解试验Solubility                           clear colorless（200 mg plus 4 ml of water）
水分Water(Karl Fischer)                      ≤18% (4 mol/mol)
磷Phosphorus by ICP                          8.2 to 10.0% *
钠Sodium by ICP                              3.5 to 15.9% **
溶剂含量Solvent content                      ≤4%
纯度Purity(HPLC)                             ≥98%
紫外吸光度Uv-vis spectrum                    emm = 8.5 - 9.8（λmax271 to 273, 0.1 m phosphate buffer ph 7.0)