无色斜方结晶，具潮解性。相对密度2.45，熔点59.5℃,沸点132度。四水物加热到70-80℃或置于硫酸干燥器中，可失水而形成无水物，加热到360℃以上，会分解放出氧化氮而生成氧化镉。易溶于水，能溶于醇、丙酮和乙酸乙酯，几乎不溶于浓硝酸。与有机物混合时，发热自燃并爆炸硝酸镉为强氧化剂。有毒！

GB/T　1284-77
项目Item　                                         分析纯　　    化学纯
                                                    (AR)          (CP)
含量［Cd(NO3)2·4H2O］Assay,%                       ≥99.0        98.5
水溶液反应Solution reaction                         合格          合格
澄清度试验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
硫酸盐(SO4)Sulfate,%                                ≤0.003       0.003
铁(Fe)Iron,%                                        ≤0.0001      0.0005
铜(Cu)Copper,%                                      ≤0.001       0.003
锌(Zn)Zinc,%                                        ≤0.002       0.005
铅(Pb)Lead,%                                        ≤0.005       0.01
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                                           ≥99.0%
不溶物Insoluble matter                              ≤0.005%
氯化物(Cl)Chloride(Cl)                              ≤0.005%
硫酸盐(SO4)Sulfate                                  ≤0.002%
钙(Ca)Calcium(Ca)                                   ≤0.02%
铜(Cu)Copper(Cu)                                    ≤0.002%
铅(Pb)Lead(Pb)                                      ≤0.005%
镁(Mg)Magnesium(Mg)                                 ≤0.02%
锌(Zn)Zinc(Zn)                                      ≤0.05%
铁(Fe)Iron(Fe)                                      ≤0.001%


99.99% metals basis:


外观Appearance                            white powder or crystals
X-射线衍射分析X-Ray Diffraction           Conforms to Structure
纯度Purity                                ≥99.99% Based on Trace Metals Impurities
ICP Major Analysis                        Confirms Hafnium component
镉Cd by complexometri ctitration          35.3%-37.6%  
总痕量金属杂质total metallic impurities   ≤200ppm by ICP Atomic emission



99.999% metals basis:


外观Appearance                            white powder or crystals
X-射线衍射分析X-Ray Diffraction           Conforms to Structure
纯度Purity                                ≥99.999% Based on Trace Metals Impurities
ICP Major Analysis                        Confirms Hafnium component
镉Cd by complexometri ctitration          35.3%-37.6%  
总痕量金属杂质total metallic impurities   ≤20ppm by ICP Atomic emission

危险品标志  O,T,N 
安全说明  53-45-60-61 
危险品运输编号  UN 3087 5.1/PG 2
危险类别码  45-8-20/21/22-50/53 
WGK Germany  3
RTECS  EV1850000
HazardClass  5.1 
PackingGroup  II 
 

用于制造催化剂、电池。含镉药剂等。是制造其他镉盐和氧化镉的原料。用作玻璃和陶瓷的着色剂，照相胶片用乳化剂，以及测定锌和亚铁氰化物的试剂。
密封干燥阴凉处保存