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GB/T 15897-1995
项目ltem 分析纯 化学纯
(AR) (CP)
含量(CaCO3)Assay,% ≥99.0 98.0
澄清度试验Clarity 合格 合格
盐酸不溶物Insoluble in hy-
drochloride acid,% ≤0.01 0.03
碱度(以OH)Alkalinity,mmol/100g ≤0.25 0.25
氯化物(Cl)Chloride,% ≤0.002 0.01
硫酸盐(SO4)Sulfate,% ≤0.01 0.05
钠(Na)Sodium,% ≤0.1 0.3
钾(K)Potassium,% ≤0.005 0.05
镁(Mg)Magnesium,% ≤0.05 0.20
锶(Sr)Strontium,% ≤0.05 0.10
钡(Ba)Barium,% ≤0.02 0.04
铁(Fe)lron,% ≤0.001 0.005
重金属(以Pb计)Heavy metals,% ≤0.002 0.01
GB 12596-90
项目ltem 基准试剂
(PT)
含量(CaCO3),% 99.95～100.05
澄清度试验Clarity 合格
干燥失重Loss on drying,% ≤0.2
碱度(以OH计)Alkalinity,mmol/100g ≤0.25
氯化物(Cl)Chloride,% ≤0.001
硫酸盐(SO4)Sulfale,% ≤0.01
总氮量(N)Total nitrogen,% ≤0.01
镁(Mg)Magnesium,% ≤0.02
铁(Fe)Iron ,% ≤0.001
重金属(以Pb计)Heavy metals,% ≤0.001
ACS级
项目名称Item ACS Grade
含量(干基,CaCO3)Assay 99.0%
稀盐酸不溶物Insoluble in dilute hydrochloride ≤0.001%
氯化物(Cl)Chloride(Cl) ≤0.001%
氟化物(F)Fluoride(F) ≤0.0015%
硫酸盐(SO4)Sulfate ≤0.005%
铵(NH4)Ammonium ≤0.003%
重金属(以Pb计)Heavy metals(as Pb) ≤0.001%
铁(Fe)Iron(Fe) ≤0.002%
钡(Ba)Barium(Ba) ≤0.01%
镁(Mg)Magnesium(Mg) ≤0.01%
钾(K)Potassium(K) ≤0.01%
钠(Na)Sodium(Na) ≤0.01%
锶(Sr)Strontium(Sr) ≤0.1% |
