98%:

含量Assay by Complexiometric EDTA        97.5 - 102.5%
镉Cd by Complexiometric EDTA             48.0- 50.5 %
水不溶物                                 ≤  0.01%  
硫酸盐(SO4)                              ≤  0.05%
铁(Fe)                                   ≤  0.001%
锌(Zn)                                   ≤  0.01%  
铜(Cu)                                   ≤  0.01%  
铅(Pb)                                   ≤  0.05%