AR / CP
项目Item                                                                 分析纯　　　　 化学纯
　　　　　　　　　　　　　　　　　　　　　         (AR)                   (CP)
含量(C₄H₆CaO₄•H₂O)Assay,%                                    ≥98.0            98.0
澄清度试验Clarity                                                     合格　　　　  合格
水不溶物lnsoluble matter in water,%　　                   ≤0.005          0.01
游离碱Free alkali                                                      合格　　　　  合格
游离酸(以CH₃COOH计)Free acids,%                           ≤0.20           0.30
氯化物(Cl)Chloride,%                                                ≤0.003          0.005
硫酸盐(SO₄)Sulfate,%                                                0.005          0.01
镁(Mg)Magnesium,%                                                 ≤0.002          0.003
铁(Fe)Iron,%                                                             ≤0.001          0.002
重金属(以Pb计)Heavy metals,%                                  ≤0.001          0.002
还原高锰酸钾物质Potassium pemanganate
reducing substances                                                   合格　　　  合格