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HG/T 3-985-76
项目Item 分析纯 化学纯
(AR) (CP)
含量(C10H16N2O8)Assay,% ≥ 99.5 98.5
氯化物(Cl)Chloride,% ≤ 0.05 0.1
***盐(SO4)Sulfate,% ≤ 0.05 0.1
灼烧残渣(以***盐计)Ignition residue,% ≤ 0.1 0.3
碳酸钠溶液溶解试验Solubility(in sodium carbonate solution) 合格 合格
铁(Fe)Iron,% ≤ 0.001 0.001
重金属(以Pb计)Heavy metals,% ≤ 0.001 0.001
ACS级
项目名称Item ACS Grade
含量(C10H16N2O8)Assay 99.4-100.6%
氨水不溶物Insoluble in dilute ammonium hydroxide ≤0.005%
灼烧残渣Residue after ignition ≤0.2%
氨基三乙酸[(HOCOCH2)3N]Nitrilotriacetic acid ≤0.1%
钙(Ca)Calcium(Ca) ≤0.001%
镁(Mg)Magnesium(Mg) ≤5ppm
重金属(以Pb计)Heavy metals(as Pb) ≤0.001%
铁(Fe)Iron(Fe) ≤0.005%
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