| 质量标准： |
GB/T 9853-88
项目Item 分析纯 化学纯
(AR) (CP)
含量(Na2SO4)Assay,% ≥ 99.0 98.0
pH(50g/L溶液，25℃)pH 5.0-8.0 5.0-8.0
of water solution
澄清度试验Clarity 合格 合格
水不溶物Insoluble matter in water,% ≤ 0.005 0.02
灼烧失重Ignition loss,% ≤ 0.2 0.5
氯化物(Cl)Chloride,% ≤ 0.001 0.005
总氮量(N)Total nitrogen,% ≤ 0.0005 0.001
磷酸盐(PO4)Phosphate,% ≤ 0.001 0.002
钾(K)Potassium,% ≤ 0.01 --
钙(Ca)Calcium,% ≤ 0.002 0.005
铁(Fe)Iron,% ≤ 0.0005 0.0015
重金属(以Pb计)Heavy metals,% ≤ 0.0005 0.002ACS级
项目名称 ACS Grade
含量(Na2SO4)Assay ≥99.0%
pH(5%溶液,25.0℃)pH of a 5% solution at 25.0℃ 5.2-9.2
水不溶物Insoluble matter ≤0.001%
灼烧残渣Residue after ignition ≤0.5%
氯化物(Cl)Chloride(Cl) ≤0.001%
含氮化合物(以N计)Nitrogen compounds ≤5ppm
磷酸盐(PO4)Phosphate ≤0.001%
重金属(以Pb计)Heavy metals(as Pb) ≤5ppm
铁(Fe)Iron(Fe) ≤0.001%
钙(Ca)Calcium ≤0.01%
镁(Mg)Magnesium ≤0.005%
钾(K)Potassium ≤0.01%
萃取-浓缩的适应性实验Extraction-concentration
suitability Passes test USP, EP, BP
ASSAY (DRIED BASIS) 99.0 - 100.5%
ACIDITY / ALKALINITY TO PASS TEST
LOSS ON DRYING -- 0.5%
CHLORIDE (Cl) -- 0.02%
HEAVY METALS (as Pb) -- 0.001%
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