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

质量标准

Q/(HG)SJ 732-1997

ACS级
项目名称Item                                  ACS Grade
含量Assay                                      99.00%
不溶物Insoluble matter                         ≤0.005%
碱度Alkalinity                                 Passes test
可滴定酸Titrable acid                          ≤0.035meq/g
氯化物(Cl)Chloride(Cl)                         ≤0.001%
硫酸盐(SO₄)Sulfate                             ≤0.01%
钡(Ba)Barium(Ba)                               ≤0.01%
重金属(以Pb计)Heavy metals(as Pb)              ≤0.005%
铁(Fe)Iron(Fe)                                 ≤0.001%
镁(Mg)Magnesium(Mg)                            ≤0.05%
钾(K)Potassium(K)                              ≤0.01%
钠(Na)Sodium(Na)                               ≤0.02%
锶(Sr)Strontium(Sr)                            ≤0.05%

毒性分级 高毒
危险品标志  Xi
危险类别码  36/37/38
安全说明  26-36
WGK Germany  1
急性毒性 静脉-小鼠 LD50: 52 毫克/公斤; 腹腔-小鼠 LD50: 75 毫克/公斤
可燃性危险特性 热分解辛辣刺激烟雾
储运特性 库房通风低温干燥; 与食品原料分开存放