GB/T 670-86
项目Item 优级纯 分析纯 化学纯
(GR) (AR) (CP)
含量(AgNO3)Assay,% ≥99.8 99.8 99.5
外观Appearance 合格 合格 合格
水溶液反应Solution reaction 合格 合格 合格
水不溶物Insoluble matter in water,% ≤0.003 0.005 0.005
氯化物(Cl)Chloride,% ≤0.0005 0.001 0.003
硫酸盐(SO4)Sulfate,% ≤0.002 0.004 0.006
锰(Mn)Manganese,% ≤0.0005 -- --
铁(Fe)Iron,% ≤0.0002 0.0004 0.0007
镍(Ni)Nickel,% ≤0.0005 -- --
铜(Cu)Copper,% ≤0.0005 0.001 0.002
锌(Zn)Zinc,% ≤0.0001 -- --
镉(Cd)Cadmium,% ≤0.0001 -- --
铊(T1)Thallium,% ≤0.001 -- --
铅(Pb)Lead,% ≤0.0005 0.001 0.002
盐酸不沉淀物Substances not
precipitated by hydrochloric acid,% ≤0.005 0.02 0.03
ACS级
项目名称 Item Sign ACS Grade
含量............Assay...............................≥.........99.0%
澄清度..........Claroty of solution............................Passes test
氯化物(Cl)......Chloride(Cl)........................≤.........5ppm
游漓酸..........Free acid......................................Passes test
盐酸不沉淀物....Substances not
precipitated by hydrochloric acid...≤.........0.1%
硫酸盐(SO4).....Sulfate(SO4)........................≤.........0.002%
铜(Cu)..........Copper(Cu)..........................≤.........2ppm
铁(Fe)..........Iron(Fe)............................≤.........2ppm
铅(Pb)..........Lead(Pb)............................≤.........0.001%
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