| 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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