硫酸镉 Cadmium Sulfate,8/3-Hydrate

无色单斜结晶。无气味。加热到40度以上开始失水，到80度以上成为一水合物，但继续加热不会变灰无水物。易溶于水，几乎不溶于醇和乙酸乙酯。密度： 3.09

Q（HG）SJ　682-95
项目Item　　                                      分析纯　　  化学纯
                                                  （AR）      （CP）
含量（3CdSO₄·8H₂O）Assay,%                         ≥99.0       99.0
pH（50g/L溶液，25℃）                               ≤4.0        4.0
澄清度试验Clarity                                  合格        合格
水不溶物Insoluble matter in water,%               ≤0.003      0.005
氯化物（Cl）Chloride,%　                            ≤0.001      0.003
总氮量（N）Total nitrogen,%                         ≤0.002      0.006
铝（Al）Aluminum,%                                  ≤0.005      0.01
铁（Fe）Iron,%                                      ≤0.0002     0.0006
铜（Cu）Copper,%                                    ≤0.001      0.002
锌（Zn）Zinc,%                                      ≤0.002      0.005
砷（As）Arsenic,%                                   ≤0.00005    0.0001
铅（Pb）Lead,%                                      ≤0.1        0.02
硫化铵不沉淀物（以硫酸盐计）Substances not
precipitated by ammonium sulfide,%                ≤0.1        0.2

ACS级
项目名称Item                                       ACS Grade
含量Assay                                         79.5-81.0%
水不溶物 Insoluble matter                         ≤0.005%
硝酸盐及亚硝酸盐Nitrate and nitrite（as （NO₃）      ≤0.003%
硫酸盐（SO₄）Sulfate                                ≤0.005%
铵（NH4）Ammonium                                   ≤0.005%
钙（Ca）Calcium（Ca）                                 ≤0.005%
铜（Cu）Copper（Cu）                                  ≤5ppm
铅（Pb）Lead（Pb）                                    ≤0.005%
钾（K）Potassium（K）                                 ≤0.02%
钠（Na）Sodium（Na）                                  ≤0.05%
锌（Zn）Zinc（Zn）                                    ≤0.05%
铁（Fe）Iron（Fe）                                    ≤5ppm



99.99% metals basis：


外观Appearance                          白色结晶粉末或块状物
纯度Purity                              ≥99.99% Based On Trace Metals Analysis of ICP
镉Cd                                    ≥43.0 % （Complexometric EDTA）
ICP:                                    Confirms Cadmium Component Confirmed
痕量金属分析Trace Metal Analysis        ≤200ppm by ICP Atomic emission

镉、铜、镍的电解淀积，制造标准镉元素，马许氏试砷法的触媒，测定硫化氢，检定反丁烯二酸，电镀镉。