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 Q/(HG)SJ 728-1997 项目ltem                                    分析纯     化学纯                          (AR)           (CP) 含量(CaCl2)Assay,%                        ≥ 96.0            96.0 外观Appearance                               合格      合格 不溶物及氨水沉淀物Insoluble and preci- pitated by ammonium solution,%      ≤ 0.015           0.03 碱度[Ca(OH)2]Assay,%                      ≤ 0.02            0.04 磷酸盐(PO4)Phosphate,%                    ≤ 0.003           0.003 硫酸盐(SO4)Sulfale,%                      ≤ 0.02            0.02 硝酸盐(NO3)Nitrate                           合格      合格 钡(Ba)Barium                                 合格      合格 重金属(以Pb计)Heavy metals,%              ≤ 0.001           0.002 铁(Fe)Iron,%                              ≤ 0.001           0.002 锌(Zn)Zinc,%                              ≤ 0.01            0.01 砷(As)Arsenic,%                           ≤ 0.0003          0.0003 碱金属及镁(以硫酸盐计)Alkali metals and magnesium,%                               ≤ 0.3             0.6
  ACS级 项目名称Item                              ACS Grade 含量(CaCl2)Assay                          ≥96.0% 可滴定碱Titrable base                     ≤0.006meq/g  |