性状

无色透明液体。能与醇、醚和其他许多有机溶剂混和，不溶于水，水中溶解度: 0.2 g/l water (20°C)。能燃烧。低毒，半数致死量（大鼠，经口）4000mg/kg。有刺激性。
密度:0.8684
熔点:-47.4℃
沸点:139.3℃

质量标准

项目Item　　　　　　　　　　            　　 　化学纯      
                                                (CP)
沸程Boiling range/℃                           137.0~140.0  
含量Assay                                      ≥95.0%  
碱度basicity(以OH-计)/（mmol/100g）            ≤0.023  
硫化合物sulfur compound                        ≤0.006%  
水分Water                                      合格  
酸度Acidity(以H+计)/（mmol/100g）              ≤0.023  
易炭化物质readily carbonizable substances      合格  
折光率Refractive index n20/D                   1.4962~1.4982  
蒸发残渣Evaporation residue                    ≤0.005%  



项目Item　　　　　　　　　　            　　 　分析纯      
                                                (CP)
沸程Boiling range/℃                           137.0~140.0  
纯度Purity(GC)                                 ≥98.0%  
碱度basicity(以OH-计)/（mmol/100g）            ≤0.01  
硫化合物sulfur compound                        ≤0.005%  
水分Water                                      合格  
酸度Acidity(以H+计)/（mmol/100g）              ≤0.01  
易炭化物质readily carbonizable substances      合格  
折光率Refractive index n20/D                   1.4962~1.4982  
蒸发残渣Evaporation residue                    ≤0.002%  



项目                                           优级纯
                                                (GR)
纯度Purity                                     >99.0%(GC)
外观Appearance                                 无色透明液体
红外光谱鉴别Infrared spectrometry              符合
水分Water                                      
<0.1 % >折光率Refractive index                         0.8640-0.8670  
相对密度Specific gravity (20/20°C)            1.1790-1.180