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Sodium iodide

Cas:
7681-82-5
MDL:
--MFCD00003532
Molecular Formula:
NaI
Molecular Weight:
149.89
Alias:
Ioduril
Product order:
Name Specifications Packing Price Delivery
Sodium iodide ACS 100g RMB 528 Consulting service
Sodium iodide CP 500g RMB 495 Consulting service
Sodium iodide AR 500g RMB 605 Consulting service
Sodium iodide AR 100g RMB 184.8 Consulting service
Character:
白色立方晶系结晶体或粉末。无嗅,味咸苦。易溶于水、乙醇、丙酮、甘油、液氨、液体二氧化硫,水溶液呈微碱性。有潮解性,湿空气中吸水而凝块。与空气接触逐渐分解而析出碘,渐呈棕色。
密度:3.67
熔点:651℃
沸点:1304℃
Quality Standard:
 
   Q/(HG)SJ 032-91
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%

Storage:
密封避光保存。
用途  化学工业用作制备无机和有机碘化物的重要原料,也用作碘的助溶剂和用于配制碘乳剂。医药工业用于生产祛痰剂和利尿剂等药物。感光工业用作胶片的感光剂,分析化学中用作点滴分析及其他分析试剂。化学反应中用作氧化剂。
    当温度低于65.6℃,碘化钠在水溶液中形成含水数目不定的各种水合物。室温下由溶液析出二水物,为无色棱形晶体,-13.5~31.5℃内可析出五水物。与二氧化硫作用,生成相应的稳定化合物。有还原性,可被氧化别氧化,游离出碘。
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