项目                               CP 化学纯            AR分析纯
含量assay（%）        ≥98.0                    ≥99.0
硫酸盐（SO4）         ≤0.005%              ≤0.005%
游离碱（KOH）         ≤0.1%                   ≤0.05%
铁（Fe）                     ≤0.005%            ≤0.005%
重金属（以Pb计）      ≤0.003%            ≤0.003%
氟硅酸钾（K2SiF6）  ≤0.8%                ≤0.8%
氯化物（Cl）               ≤0.005%            ≤ 0.005%
磷酸盐（PO4）          ≤0.01%              ≤0.01%
游离酸（以HF计）      ≤0.1%               ≤0.05%