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GB/T 631-89
项目Item 分析纯 化学纯
(AR) (CP)
含量(NH3)Assay,% 25-28 25-28
蒸发残渣Evaporation residue,% ≤ 0.002 0.004
氯化物(Cl)Chloride,% ≤ 0.00005 0.0001
硫化物(S)Sulfide,% ≤ 0.00002 0.00005
硫酸盐(SO4)Sulfate,% ≤ 0.0002 0.0005
磷酸盐(PO4)Phosphate,% ≤ 0.0001 0.0002
碳酸盐(以CO2计)Carbonate,% ≤ 0.001 0.002
镁(Mg)Magnesium,% ≤ 0.0001 0.0005
钙(Ca)Calcium,% ≤ 0.0001 0.0005
铁(Fe)Iron,% ≤ 0.00002 0.00005
钠(Na)Sodium,% ≤ 0.0005 --
钾(K)Potassium,% ≤ 0.001 --
铜(Cu))Copper,% ≤ 0.00001 0.00005
铅(Pb)Lead,% ≤ 0.00005 0.0001
还原高锰酸钾物质（以O计),% ≤ 0.0008 0.0008
Potassium permanganate reducing
substances
协 118-97
项目Item 优级纯
(GR)
含量(NH3)Assay,% 25-28
蒸发残渣Evaporation residue,% ≤ 0.002
氯化物(Cl)Chloride,% ≤ 0.00005
硫化物(S)Sulfide,% ≤ 0.00002
硫酸盐(SO4)Sulfate,% ≤ 0.0001
磷酸盐(PO4)Phosphate,% ≤ 0.00005
碳酸盐(以CO2计)Carbonate,% ≤ 0.001
镁(Mg)Magnesium,% ≤ 0.0001
钙(Ca)Calcium,% ≤ 0.0001
铁(Fe)Iron,% ≤ 0.00001
钠(Na)Sodium,% ≤ 0.0001
钾(K)Potassium,% ≤ 0.0001
铜(Cu))Copper,% ≤ 0.000005
铅(Pb)Lead,% ≤ 0.00001
还原高锰酸钾物质（以O计),% ≤ 0.0008
Potassium permanganate reducing
substances
项目名称Item ACS Grade
含量(以NH3计)Assay ≥20.0-30.0%
氯化物(Cl)Chloride(Cl) ≤0.5ppm
磷酸盐(PO4)Phosphate ≤2ppm
硫酸盐(SO4)Sulfate ≤2ppm
汞（Hg)Mercurous（Hg) ≤1ppb
铝(Al)Aluminum(Al) ≤1ppb
钡(Ba)Barium(Ba) ≤1ppb
硼(B)Boron(B) ≤5ppb
镉(Cd)Cadmium(Cd) ≤1ppb
钙(Ca)Calcium(Ca) ≤1ppb
铬(Cr)Chromium(Cr) ≤1ppb
钴(Co)Cobalt(Co) ≤1ppb
铜(Cu)Copper(Cu) ≤1ppb
铁(FeIron(Fe) ≤5ppb
铅(PbLead(Pb) ≤1ppb
锂(Li)Lithium(Li) ≤1ppb
镁(Mg)Magnesium(Mg) ≤1ppb
锰(Mn)Manganese(Mn) ≤1ppb
钼(Mo)Molybdenum(Mo) ≤1ppb
钾(K)Potassium(K) ≤1ppb
硅(Si)Silicon(Si) ≤5ppb
钠(Na)Sodium(Na) ≤5ppb
锶(Sr)Strontium(Sr) ≤1ppb
锡(Sn)Tin(Sn) ≤1ppb
钛(Ti)Titanium(Ti) ≤1ppb
钒(V)Vanadium(V) ≤1ppb
锌(Zn)Zinc(Zn) ≤1ppb
锆(Zr)Zirconium(Zr) ≤1ppb
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