碘化钠/7681-82-5

碘化钠/7681-82-5

无色立方晶体或白色结晶性粉末。无臭、味咸苦。 易溶于水，溶于甲醇、乙醇、丙酮、甘油、液氨和液体二氧化硫。水溶液呈微碱性。 熔点 661 °C(lit.) 沸点 1300 °C 密度 3.66 折射率 1.7745 闪点 1300-1304°C
质量标准
  

Q/(HG)SJ 032-91

99.999% metals basis:


外观Appearance                                         white Powder/Crystals
X-射线衍射分析X-Ray Diffraction           Conforms to Structure 
纯度Purity                                                  ≥99.999% Based on Trace Metals Impurities of ICP
ICP Assay                                                   Confirms Na component
碘I(titrationwith silver nitrate)                 83.5%-86.5%
痕量金属分析total metallic impurities   ≤20ppm by ICP Atomic emission

项目Item                                            分析纯     化学纯
                                                             (AR)       (CP)
含量(NaI)Assay,%                       ≥99.5       99.0
水不溶物Insiluble matter in water,%    ≤0.005      0.005
氯化物(Cl)Chloride,%                   ≤0.03       0.1
碘酸盐(IO₃)Iodate,%                    ≤0.005       0.01
硫酸盐(SO₄)Sulfate ,%                  ≤0.005       0.01
总氮量(N)Total nitrogen,%            ≤0.001       0.005
镁(Mg)Magnesium,%                     ≤0.005       0.001
钙(Ca)Calcium,%                         ≤0.001       0.005
铁(Fe)Iron,%                                ≤0.0002      0.0005
钡(Ba)Barium,%                            ≤0.00005     0.0001
重金属(以Pb计)Heavy metals,%           ≤0.0005      0.001


ACS级
项目名称　                                          ACS Grade
含量Assay                                           ≥99.5%
"pH(5%,25.0℃)"pH of a 5% solution at 25.0℃         6.0-9.0
水不溶物Insoluble matter                            ≤0.01%
氯化物和溴化物(以Cl计)Chloride and bromide          ≤0.01%
碘酸盐(IO₃)Iodidi                                   ≤0.0003%
磷酸盐(PO₄)Phosphate                                ≤0.001%
硫酸盐(SO₄)Sulfate                                  ≤0.005%
钡(Ba)Barium                                        ≤0.002%
重金属(以Pb计)Heavy metals                          ≤5ppm
铁(Fe)Iron                                          ≤5ppm
钙(Ca)Calcium                                       ≤0.002%
镁(Mg)Magnesium                                     ≤0.001%
钾(K)Potassium                                      ≤0.01%


品级Grade                                       药典级   
                                           (Ph. Eur., BP, USP)
含量assay                                      99-100.5% (calc. to the dried substance) 
碱反应杂质alkalic reac. Impurities,            complies 
硫代硫酸钡barium and thiosulfate,              complies 
有机挥发物organic volatile impurities(GC),     complies  
残留溶剂residual solvents,                     in accordance 
重金属heavy metals (as Pb)                     ≤0.0005%  
总氮total nitrogen (N)                         ≤0.003%   
硫代物thiosulfate (S2O3)                       ≤0.005%   
游离碱free alkali (as NaOH)                    ≤0.02%   
水分water (Karl Fischer)                       ≤2% 
干燥损失loss on drying, 105 °C                ≤2% 
溴、氯bromide, chloride (as Cl-):              ≤300 ppm 
碘酸钾iodate (IO3-):                           ≤2 ppm 
硫酸根sulfate (SO42-):                         ≤100 ppm 
Fe:                                            ≤5 ppm 
K:                                             ≤500 ppm 
溶解性suitability for appearance of solution   complies 


99.99% metals basis:


外观Appearance                          white Powder/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
ICP Assay                               Confirms Na component
碘I(titrationwith silver nitrate)       83.0%-86.4%
痕量金属分析total metallic impurities   ≤100ppm by ICP Atomic emission