碘化銨/12027-06-4

無色立方晶系結(jié)晶或白色結(jié)晶性粉末。無臭、味咸。相對密度2.514(25/4℃)。溶于水，易溶于乙醇、丙酮、氨，微溶于乙醚。具有潮解性和感光性，遇光和空氣能析出游離碘而呈黃色甚至褐色。55l℃升華。碘化銨水溶液易被氧化分解，同時(shí)析出碘變?yōu)辄S色。 熔點(diǎn) 551 °C 密度 2.51
質(zhì)量標(biāo)準(zhǔn)
  

項(xiàng)目名稱Item                                          ACS Grade
含量Assay                                            ≥99.0%
不溶物Insoluble matter                               ≤0.005%
灼燒殘?jiān)黂esidue after ignition                       ≤0.05%
氯化物和溴化物(以Cl計(jì))Chloride and Bromide(as Cl)    ≤0.005%
磷酸鹽(PO4)Phosphate                                 ≤0.001%
硫酸鹽(SO4)Sulfate                                   ≤0.05%
鋇(Ba)Barium(Ba)                                     ≤0.002%
重金屬(以Pb計(jì))Heavy metals(as Pb)                    ≤0.001%
鐵(Fe)Iron(Fe)                                       ≤5ppm
 
Q/(HG)SJ 694-95
項(xiàng)目Item                                             分析純      化學(xué)純
                                                      (AR)        (CP)
含量(NH4I)Assay,%                                    ≥99.0       98.0
水溶液反應(yīng)Solution reaction                           合格        合格
澄清度試驗(yàn)Clarity合格合格
水不溶物Insoluble matter in water,%                  ≤0.005      0.01
灼燒殘?jiān)?以硫酸鹽計(jì))Ignition residue,%               ≤0.005      0.02
氯化物(Cl)Chloride,%                                 ≤0.01       0.02
碘s鹽及碘(以IO3計(jì))Iodate and ioldide,%              ≤0.003      0.01
鐵(Fe)Iron,%                                         ≤0.0001     0.0003

99.999% metals basis：

外觀Appearance                          白色至淡黃色結(jié)晶粉末
X-射線衍射分析X-Ray Diffraction         Conforms to Structure
紅外光譜鑒別Infrared spectrometry       Conforms to Structure 
純度Purity                              ≥99.999% Based On Trace Metals Analysis
碘I                                     86.2%-88.9%  (titration with silver nitrate) 
痕量金屬分析Trace Metal Analysis        ≤20ppm by ICP Atomic emission