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项目Item 分析纯 化学纯
(AR) (CP)
含量(CH3CONH2)Assay,% ≥ 98.5 98.0
凝固点Solidifying point℃ ≥ 77.0 76.0
水不溶物lnsoluble matter in water,% ≤ 0.02 0.03
游离酸(以CH3COOH计)Free acids,% ≤ 0.2 0.5
灼烧残渣(以硫酸盐计)Residue,% ≤ 0.01 0.03
氯化物(Cl)Chloride,% ≤ 0.002 0.005
硫酸盐(SO4)Sulfate,% ≤ 0.002 0.005
乙酸盐(CH3COO)Acetate,% ≤ 0.2 0.5
重金属(以Pb计)Heavy metals,% ≤ 0.001 0.002
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