质量标准: | 碘化钠,7681-82-5,Sodium iodide Q/(HG)SJ 032-91 项目Item 分析纯 化学纯 (AR) (CP) 含量(NaI)Assay,% ≥99.5 99.0 水不溶物Insiluble matter in water,% ≤0.005 0.005 氯化物(Cl)Chloride,% ≤0.03 0.1 碘酸盐(IO3)Iodate,% ≤0.005 0.01 硫酸盐(SO4)Sulfate ,% ≤0.005 0.01 总氮量(N)Total nitrogen,% ≤0.001 0.005 镁(Mg)Magnesium,% ≤0.005 0.001 钙(Ca)Calcium,% ≤0.001 0.005 铁(Fe)Iron,% ≤0.0002 0.0005 钡(Ba)Barium,% ≤0.00005 0.0001 重金属(以Pb计)Heavy metals,% ≤0.0005 0.001 碘化钠,7681-82-5,Sodium iodide ACS级 项目名称 ACS Grade 含量Assay ≥99.5% "pH(5%,25.0℃)"pH of a 5% solution at 25.0℃ 6.0-9.0 水不溶物Insoluble matter ≤0.01% 氯化物和溴化物(以Cl计)Chloride and bromide ≤0.01% 碘酸盐(IO3)Iodidi ≤0.0003% 磷酸盐(PO4)Phosphate ≤0.001% 硫酸盐(SO4)Sulfate ≤0.005% 钡(Ba)Barium ≤0.002% 重金属(以Pb计)Heavy metals ≤5ppm 铁(Fe)Iron ≤5ppm 钙(Ca)Calcium ≤0.002% 镁(Mg)Magnesium ≤0.001% 钾(K)Potassium ≤0.01% |