性狀無色結(jié)晶或白色粉末。微有潮解性。久置或見光析出碘即變黃。溶于水、乙醇、丙酮和甘油，不溶于醚、防潮、避光保存。其水溶液呈中性或微堿性，能溶解碘。近似致死量(大鼠，靜脈)285mg/kg。密度:3.12熔點(diǎn):680℃沸點(diǎn):1420℃
                   
            在潮濕空氣中微有吸濕性，久置析出游離碘而變成黃色，并能形成微量碘酸鹽。光及潮濕能加速分解。1g溶于0.7ml水、0.5ml沸水、22ml乙醇、8ml沸乙醇、51ml無水乙醇、8ml甲醇、7.5ml丙酮、2ml甘油、約2.5ml乙二醇。其水溶液也會氧化而漸變黃色，可加少量堿防止。
                  備注: 以上描述，僅作參考，并不表示您收到的產(chǎn)品，與此項(xiàng)描述完全相符，產(chǎn)品的出廠標(biāo)準(zhǔn)，請參見質(zhì)量標(biāo)準(zhǔn)。
                  質(zhì)量標(biāo)準(zhǔn)
                   GB/T1272-88
                  項(xiàng)目ltem                                           優(yōu)級純       分析純     化學(xué)純
                                                                             (GR)         (AR)       (CP)
                  含量(Kl)Assay,%                                 ≥99.5%        98.5%      98.0%
      pH(50g/L溶液，25℃)pH of water sol-ution          6.0-8.0      6.0-8.0    6.0-8.0
                  澄清度試驗(yàn)Clarity                                     合格         合格       合格
                  水不溶物lnsoluble matter in water,%  ≤0.005        0.01       0.02
     氯化物及溴化物(以Cl計(jì))Chloride andbromide,%        ≤0.01         0.02       0.05
                  碘酸鹽及碘(以IO3計(jì))lodate and iodine  ≤0.0003       0.002      0.005
                  硫酸鹽(SO4)Sulfate,%                             ≤0.002        0.005      0.01
                  磷酸鹽(PO4)Phosphate,%                        ≤0.001        0.002      --
                  總氮量(N)Total nitrogen,%                       ≤0.001        0.002      0.002
                  鈉(Na)Sodium,%                                        ≤0.05         0.1        --
                  鎂(Mg)Magnesium,%                                ≤0.001        0.002       0.005
                  鈣(Ca)Calcium,%                                       ≤0.001        0.002      0.005
                  鐵(Fe)Iron ,%                                           ≤0.0001       0.0003     0.0005
                  鋇(Ba)Barium,%                                         ≤0.001        0.002       0.004
                  重金屬(以Pb計(jì))Heavy metals,%              ≤0.0002       0.0005     0.001
                  砷(As)Arsenic,%                                       ≤0.00001      0.00002    --
                  還原性物質(zhì)Reducing substances                合格         合格            --
                 貯存密封避光保存。易吸潮
                  用途容量分析碘量法的常用試劑。單倍體育種中配制伯萊德斯、改良懷特、MS和RM等培養(yǎng)基。糞便檢驗(yàn)等。照相。制藥。