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GR / AR / CP / PT / ACS / 4N / SP
项 目ltem 优级纯 分析纯 化学纯
(GR) (AR) (AR)
含量(KNO3)Assay,% ≥99.0 ≥99.0 ≥98.5
pH(50g/L溶液,25℃),pH of water solution 5.0-8.0 5.0-8.0 5.0-8.0
澄清度试验Clarity 合格 合格 合格
水不溶物lnsoluble matter in water,% ≤0.002 ≤0.004 ≤0.006
碘酸盐(IO3)lodate,% ≤0.0005 ≤0.0005 ≤0.002
总氯量(Cl)Total chlorine,% ≤0.0015 ≤0.003 ≤0.005
硫酸盐(SO4),Sulfale,% ≤0.002 ≤0.003 ≤0.01
亚硝酸盐(NO2)Nitrile ≤0.001 ≤0.001 ≤0.002
磷酸盐(PO4)Phosphate,% ≤0.0005 ≤0.0005 ≤0.001
钠(Na)Sodium,% ≤0.02 ≤0.02 ≤0.05
镁(Mg)Magnesium,% ≤0.001 ≤0.002 ≤0.05
钙(Ca)Calcium,% ≤0.001 ≤0.004 ≤0.006
铁(Fe)lron,% ≤0.0001 ≤0.0002 ≤0.0005
重金属(以Pb计)Heavy metals,% ≤0.0003 ≤0.0005 ≤0.001
铵(NH4)Ammonium,% ≤0.001 ≤0.001 ≤0.005