性状：硝酸铬有无水物及多种水合物，无水物（CAS：13548-38-4）为淡绿色粉末，常见的九水物为深紫色正交单斜结晶。水合硝酸铬在空气中风化，失去部 份结晶水，且易潮解。九水硝酸铬易溶于水、酸、碱、乙醇、丙酮，水溶液在热时呈绿色，冷却后又迅速变为红紫色。熔点:60℃

备注: 以上描述，仅作参考，并不表示您收到的产品，与此项描述完全相符，产品的出厂标准，请参见质量标准。

质量标准

质量指标：HG3-936-76
项目Item                                             分析纯(AR)         化学纯(CP)
含量［Cr(NO₃)₃·9H₂O］Assay,%               ≥ 99.0               98.0
水不溶物Insoluble matter in water,%         ≤ 0.005              0.02
氯化物(Cl)Chloride,%                             ≤ 0.005              0.01
硫酸盐(SO₄)Sulfate,%                             ≤ 0.01               0.02
钠(Na)Sodium,%                                    ≤ 0.05                0.1
铝(Al)Aluminum,%                                 ≤ 0.02               0.05
钾(K)Potassium,%                                  ≤ 0.05                0.1
钙(Ca)Calcium,%                                   ≤ 0.005              0.01
铁(Fe)Iron,%                                        ≤ 0.005               0.01

99.95% metals basis:

外观Appearance                                     Black Crystals
X-射线衍射分析X-Ray Diffraction             Conforms to Structure
纯度Purity                                            ≥99.95% Based on Trace Metals Impurities of ICP
铬Chromium(Titration by Na2S2O3)            12.7- 13.2 %
ICP Major Analysis Confirmed                   Confirms Chromium Component
痕量金属分析total metallic impurities        ≤500ppm by ICP Atomic emission

99.99% metals basis:

外观Appearance                                  Black Crystals
X-射线衍射分析X-Ray Diffraction         Conforms to Structure
纯度Purity                                         ≥99.99% Based on Trace Metals Impurities of ICP
铬Chromium(Titration by Na2S2O3)         12.7- 13.2 %
ICP Major Analysis Confirmed                Confirms Chromium Component
痕量金属分析total metallic impurities     ≤100ppm by ICP Atomic emission

贮存：密封阴凉处保存

用途：用于制取其他无机及有机铬化合物，制取催化剂及载体，用作阻蚀剂及媒染剂，用于玻璃工业、陶瓷彩釉；三价铬电镀用铬试剂。

联合国编号：2720

Risk：R8- R36/38-

Safety : S17- S26- S36-

Hazard : O - Xi -