GB / T1272-88
項目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)Chloride and
bromide,%                                   ≤0.01         0.02       0.05
碘酸鹽及碘(以IO₃計)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)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        --

ACS級
項目名稱                            ACS Grade
含量(KI)Assay                        ≥99.0%
25℃時5%溶液的pH值
pH of a 5% solution at 25℃           6.0-9.2
水不溶物Insoluble matter             ≤0.005%
干燥失重Loss on drying               ≤0.2%
氯化物及氯酸鹽(以Cl計)
Chlorine 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                           ≤0.0003%
鈣(Ca)Calcium                        ≤0.002%
鎂(Mg)Magnesium                      ≤0.001%
鈉(Na)Sodium                         ≤0.005%


≥99.99% metals basis:


外觀Appearance                          白色結(jié)晶或粉末
純度Purity                              ≥99.99% Based on Trace Metals Impurities of ICP
I                                       76.0 - 77.0 % (Titration by AgNO3)
ICP:                                    Confirms Potassium Component Confirmed
痕量金屬分析Trace Metal Analysis        ≤100ppm by ICP Atomic emission
(Na、Rb、Cs、Th、Ca、Sr、U、Cd、Hg、Nb、In、Tl、Cr、Mn、Bi、Fe、Se)


≥99.999% metals basis:


外觀Appearance                          白色結(jié)晶或粉末
純度Purity                              ≥99.999% Based on Trace Metals Impurities of ICP
I                                       76.0 - 77.0 % (Titration by AgNO3)
ICP:                                    Confirms Potassium Component Confirmed
痕量金屬分析total impurities            ≤20ppm by ICP Atomic emission
(Al、As、Ba、Ca、Cd、Ce、Co、Cr、Cu、Eu、Fe、Hg、La、Mg、Mn、Na、Ni、Pb、Sc、Sm、Sr、Tl、Y）

危險品標(biāo)志  Xn,N,Xi,F
WGK Germany  2
RTECS號 NN1575000
F  10
HazardClass  8
PackingGroup  II
危險類別碼  36/37/38-36/37-20/21/22-19-11-43-34-20/21-42/43-36/38-61
安全說明  26-ection-24/25-36-45-36/37/39-53-36/37-22

用途? 常用作分析試劑，也用于照相用感光乳化劑的配制、制藥工業(yè)
用途? 用于感光乳劑、肥皂、石版印刷、有機合成、醫(yī)藥、食品添加劑等