项目Item 化学纯
(CP)
相对密度Specific gravity (20/20°C)) 0.964-0.967
折光率Refractive index n20/D 1.401-1.403
沸程范围Boiling range,℃ 123-125
(95%)
不挥发物Novolative,% ≤ 0.005
与水混和度Miscibility with water 合格
醇溶解试验Solubility(in alcohol) 合格
酸度(以HCOOH计)Acidity,% ≤ 0.01
项目 分析纯
(AR)
沸程Boiling range,℃ 123.0~125.0
相对密度Specific gravity (20/20°C) 0.963～0.966
水溶解试验Solubility(in water) 合格
酸度Acidity(以H+计)/（mmol/100g） ≤0.1
乙醇溶解试验Solubility(in alcohol) 合格
折光率Refractive index n20/D 1.401～1.403
灼烧残渣Residue ignition ≤0.005%
项目 优级纯
(GR)
外观Appearance 无色透明液体
红外光谱鉴别Infrared spectrometry 和对照品匹配
纯度Purity ≥99.5% (GC)
比重Specific gravity (20/20°C) 0.9646±0.005
水份Water ≤0.1%(K·F)
色度Color scale ≤15(Pt-Co)
项目名称 ACS级
ACS Grade
含量(CH3OCH2CH2OH).Assay ≥99.3%
色度Color(APHA) 10
可滴定酸Titrable acid ≤0.002meq/g
水分(H2O)Water ≤0.1%
品级Grade 色谱纯
(for HPLC, ≥99.7%)
外观Appearance 无色液体
纯度Purity (GC) ≥99.70 %
水分Water ≤0.05 %(by Karl Fischer)
蒸发残渣Residue on Evaporation ≤0.0005 %
水分water <0.050%
蒸发残渣evapn. residue <0.0005%
λ H2O reference
UV absorption
λ: 213 nm A: ≤1.00
λ: 240 nm A: ≤0.20
λ: 260 nm A: ≤0.05
λ: 300 nm A: ≤0.01
λ: 400 nm A: ≤0.01
品级Grade 光谱纯
(spectrophotometric grade, ≥99.7%)
外观Appearance 无色液体
红外光谱鉴别Infrared spectrometry Conforms
纯度Purity (GC) ≥99.70 %
蒸发残渣Residue on evaporation ≤0.0010%
水分water <0.020%
λ H2O reference
UV absorption
λ: 213 nm A: ≤1.00
λ: 240 nm A: ≤0.20
λ: 260 nm A: ≤0.05
λ: 300 nm A: ≤0.01
λ: 400 nm A: ≤0.01
品级Grade 氨基酸分析
(for amino acid analysis, ≥99.7% (GC))
含量assay ≥99.7% (GC)
过氧化物peroxides (as H2O2) ≤0.002%
游离酸free acid (as CH3COOH) ≤0.005%
水分water ≤0.1%
蒸发残渣Residue on evaporation ≤0.003%
氨基酸分析amino acid analysis PASS
(as solvent for ninhydrin dyeing reagent)
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