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GB/T 1285-84 项目Item 分析纯 化学纯 (AR) (CP) 含量(CdCl2)Assay,% ≥ 99.0 98.0 pH(50g/L溶液,25℃) 4.0-6.5 4.0-6.5 澄清度试验Clarity 合格 合格 水不溶物Insoluble matter in water,% ≤0.005 0.01 硫酸盐(SO4)Sulfate,% ≤0.01 0.02 总氮量(N)Total nitrogen,% ≤0.002 0.005 钠(Na)Sodium,% ≤0.005 0.01 钙(Ca)Calcium,% ≤0.01 0.02 铁(Fe)Iron,% ≤0.0002 0.001 铜(Cu)Copper,% ≤0.002 0.005 锌(Zn)Zinc,% ≤0.002 0.01 铅(Pb)Lead,% ≤0.01 0.02
ACS级 项目名称Item ACS Grade 含量Assay(as CdCl2) 79.5-81.0% 水不溶物Insoluble matter ≤0.005% 硝酸盐及亚硝酸盐Nitrate and nitrite(as (NO3) ≤0.003% 硫酸盐(SO4)Sulfate ≤0.005% 铵(NH4Ammonium ≤0.005% 钙(Ca)Calcium(Ca) ≤0.005% 铜(Cu)Copper(Cu) ≤5ppm 铅(Pb)Lead(Pb) ≤0.005% 钾(K)Potassium(K) ≤0.02% 钠(Na)Sodium(Na) ≤0.05% 锌(Zn)Zinc(Zn) ≤0.05% 铁(Fe)Iron(Fe) ≤5ppm
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