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项目Item 分析纯 (AR) 主含量(NH4Br)Assay,% ≥99.0% 干燥失重Drying loss,% : ≤0.20% 澄清度试验Clarity 合格 水不溶物Insoluble matter in water,% : ≤50PPM 灼烧残渣(以硫酸盐计)Ignition residue,% ≤ 0.03 PH(5%): 6.0-7.5 溴酸盐 (BrO3)Bromate,% : ≤9PPM 氯化物(Cl)Chloride,% : ≤0.15% 硫酸(SO4Sulfate,%: ≤40PPM 碘(I)Iodide,% : ≤50PPM 重金属(以Pb计)Heavy metals,% : ≤0.2PPM 砷 : ≤0.2PPM 铜 : ≤0.2PPM 铁(Fe)Iron,% : ≤0.2PPM
项目名称Item ACS 级 含量(NH4Br)Assay ≥99.0% pH(5%溶液,25.0℃)pH 4.5-6.0 水不溶物Insoluble matter ≤0.005% 灼烧残渣Residue after ignition ≤0.01% 溴酸盐(BrO3)Bromate ≤0.002% 氯化物(Cl)Chloride(Cl) ≤0.2% 碘化物(I)Iodide(I) ≤Passes test 硫酸盐(SO4)Sulfate ≤0.005% 钡(Ba)Barium(Ba) ≤0.002% 重金属(以Pb计)Heavy metals(as Pb) ≤5ppm 铁(Fe)Iron(Fe) ≤5ppm
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