硝酸铬|7789-02-8|Chromium nitrate|艾科试剂

货号	品名	产品规格	包装	单价(RMB)	可用库存	备注
155004	硝酸铬	99.95%	100g	301	>10	j-k
154806	硝酸铬	CP	500g	41.00	>10	q-d
116240	硝酸铬	99.99%	500g	询价	>10	q-d
116238	硝酸铬	99.99%	25g	2704	>10	j-k
116235	硝酸铬	99.95%	25g	93	>10	j-k
116234	硝酸铬	AR	500g	52	>10	q-d

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℃

质量标准

质量指标：HG3-936-76
项目Item                                      分析纯化学纯
                                               (AR)   (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