四水硝酸鎘為無色斜方結(jié)晶，具潮解性。相對密度2.45，熔點59.5℃,沸點132度。四水物加熱到70-80℃或置于硫酸干燥器中，可失水而形成無水物，加熱到360℃以上，會分解放出氧化氮而生成氧化鎘。易溶于水，能溶于醇、丙酮和乙酸乙酯，幾乎不溶于濃硝酸。與有機物混合時，發(fā)熱自燃并爆炸硝酸鎘為強氧化劑。有毒！

GB/T　1284-77
項目Item　                                         分析純　　    化學(xué)純
                                                    （AR）          （CP）
含量［Cd（NO₃）₂·4H₂O］Assay,%                       ≥99.0        98.5
水溶液反應(yīng)Solution reaction                         合格          合格
澄清度試驗Clarity                                   合格          合格
水不溶物Insoluble matter in water,%                 ≤0.003       0.01
氯化物（Cl）Chloride,%                                ≤0.0005      0.001
硫酸鹽（SO₄）Sulfate,%                                ≤0.003       0.003
鐵（Fe）Iron,%                                        ≤0.0001      0.0005
銅（Cu）Copper,%                                      ≤0.001       0.003
鋅（Zn）Zinc,%                                        ≤0.002       0.005
鉛（Pb）Lead,%                                        ≤0.005       0.01
硫化銨不沉淀物（以硫酸鹽計）Substances not
precipitated by ammonium sulfide,%                  ≤0.1         0.2

ACS級
項目名稱Item                                      ACS Grade
含量Assay                                           ≥99.0%
不溶物Insoluble matter                              ≤0.005%
氯化物（Cl）Chloride（Cl）                              ≤0.005%
硫酸鹽（SO₄）Sulfate                                  ≤0.002%
鈣（Ca）Calcium（Ca）                                   ≤0.02%
銅（Cu）Copper（Cu）                                    ≤0.002%
鉛（Pb）Lead（Pb）                                      ≤0.005%
鎂（Mg）Magnesium（Mg）                                 ≤0.02%
鋅（Zn）Zinc（Zn）                                      ≤0.05%
鐵（Fe）Iron（Fe）                                      ≤0.001%


99.99% metals basis:


外觀Appearance                            white powder or crystals
X-射線衍射分析X-Ray Diffraction           Conforms to Structure
純度Purity                                ≥99.99% Based on Trace Metals Impurities
ICP Major Analysis                        Confirms Hafnium component
鎘Cd by complexometri ctitration          35.3%-37.6%  
總痕量金屬雜質(zhì)total metallic impurities   ≤200ppm by ICP Atomic emission



99.999% metals basis:


外觀Appearance                            white powder or crystals
X-射線衍射分析X-Ray Diffraction           Conforms to Structure
純度Purity                                ≥99.999% Based on Trace Metals Impurities
ICP Major Analysis                        Confirms Hafnium component
鎘Cd by complexometri ctitration          35.3%-37.6%  
總痕量金屬雜質(zhì)total metallic impurities   ≤20ppm by ICP Atomic emission

硝酸鎘用作玻璃和陶瓷的著色劑，照相膠片用乳化劑，以及分析試劑，也用于制造其他鎘鹽和氧化鎘、催化劑、電池和含鎘藥劑等。