质量标准: HG/T2629-94
项目ltem 分析纯 化学纯
(AR) (CP)
含量[Ba(OH)2•8H2O],% ≥98.0 97.0
碳酸钡(BaCO3)Barium carbonate,% ≤1.0 2.0
澄清度试验Clarity 合格 合格
盐酸不溶物lnsoluble in hydrochl-oric acid,% ≤0.005 0.05
氯化物(CI)Chloride,% ≤0.003 0.02
硫化物(S)Sulfile,% ≤0.0002 0.001
钙(Ca)Calcium,% ≤0.02 0.05
铁(Fe)Iron,% ≤0.001 0.005
锶(Sr)Strontiun,% ≤0.08 0.15
铅(Pb)Lead,% ≤0.001 0.002
硫酸不沉淀物Substances not prici-
pitatd by sulfuric acid,% ≤0.02 0.05
ACS级
项目名称Item ACS Grade
含量Assay ≥98%
碳酸盐(以BaCO3计)Carbonate ≤2.0%
稀盐酸不溶物Insoluble in dilute hydrochloric acid ≤0.01%
氯化物(Cl)Chloride(Cl) ≤0.001%
硫化物(以S计)Sulfide(S) Passes test
钙(Ca)Calcium(Ca) ≤0.05%
钾(K)Potassium(K) ≤0.01%
钠(Na)Sodium(Na) ≤0.01%
锶(Sr)Strontium(Sr) ≤0.8%
重金属(以Pb计)Heavy metals(as Pb) ≤5ppm
铁(Fe)Iron(Fe) ≤0.001%