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Q/(HG)SJ 762-1998 项目ltem 优等纯 分析纯 化学纯 (GR) (AR) (CP) 含量(BaO2)Assay,% ≥ 90.0 85.0 85.0 盐酸不溶物lnsoluble in hydro- chloric acid,% ≤ 0.5 1.5 2.5 氯化物(Cl)Chloridea,% ≤ 0.002 0.005 0.01 氮化合物(N)Nitrogen compounds ≤ 0.01 0.015 0.01 碱金属及钙(以硫酸盐计)Alkali metals and calcium,% ≤ 0.5 1.0 1.5 铁(Fe)Iron,% ≤ 0.01 0.02 0.03 重金属(以Pb计)Heavy metals,% ≤ 0.001 0.003 0.005
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