碘化鈉/7681-82-5

無色立方晶體或白色結(jié)晶性粉末。無臭、味咸苦。 易溶于水，溶于甲醇、乙醇、丙酮、甘油、液氨和液體二氧化硫。水溶液呈微堿性。 熔點(diǎn) 661 °C(lit.) 沸點(diǎn) 1300 °C 密度 3.66 折射率 1.7745 閃點(diǎn) 1300-1304°C
質(zhì)量標(biāo)準(zhǔn)
  

Q/(HG)SJ 032-91

99.999% metals basis:


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

項(xiàng)目Item                                            分析純     化學(xué)純
                                                             (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
碘酸鹽(IO₃)Iodate,%                    ≤0.005       0.01
硫酸鹽(SO₄)Sulfate ,%                  ≤0.005       0.01
總氮量(N)Total nitrogen,%            ≤0.001       0.005
鎂(Mg)Magnesium,%                     ≤0.005       0.001
鈣(Ca)Calcium,%                         ≤0.001       0.005
鐵(Fe)Iron,%                                ≤0.0002      0.0005
鋇(Ba)Barium,%                            ≤0.00005     0.0001
重金屬(以Pb計)Heavy metals,%           ≤0.0005      0.001


ACS級
項(xiàng)目名稱                                           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計)Chloride and bromide          ≤0.01%
碘酸鹽(IO₃)Iodidi                                   ≤0.0003%
磷酸鹽(PO₄)Phosphate                                ≤0.001%
硫酸鹽(SO₄)Sulfate                                  ≤0.005%
鋇(Ba)Barium                                        ≤0.002%
重金屬(以Pb計)Heavy metals                          ≤5ppm
鐵(Fe)Iron                                          ≤5ppm
鈣(Ca)Calcium                                       ≤0.002%
鎂(Mg)Magnesium                                     ≤0.001%
鉀(K)Potassium                                      ≤0.01%


品級Grade                                       藥典級   
                                           (Ph. Eur., BP, USP)
含量assay                                      99-100.5% (calc. to the dried substance) 
堿反應(yīng)雜質(zhì)alkalic reac. Impurities,            complies 
硫代硫酸鋇barium and thiosulfate,              complies 
有機(jī)揮發(fā)物organic volatile impurities(GC),     complies  
殘留溶劑residual solvents,                     in accordance 
重金屬heavy metals (as Pb)                     ≤0.0005%  
總氮total nitrogen (N)                         ≤0.003%   
硫代物thiosulfate (S2O3)                       ≤0.005%   
游離堿free alkali (as NaOH)                    ≤0.02%   
水分water (Karl Fischer)                       ≤2% 
干燥損失loss on drying, 105 °C                ≤2% 
溴、氯bromide, chloride (as Cl-):              ≤300 ppm 
碘酸鉀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:


外觀Appearance                          white Powder/Crystals
X-射線衍射分析X-Ray Diffraction         Conforms to Structure 
純度Purity                              ≥99.99% Based on Trace Metals Impurities of ICP
ICP Assay                               Confirms Na component
碘I(titrationwith silver nitrate)       83.0%-86.4%
痕量金屬分析total metallic impurities   ≤100ppm by ICP Atomic emission