质量标准

项目Item                                  化学纯
                                           (CP)
沸程Boiling range，℃                    67.0～69.0  
相对密度Specific gravity (20/20°C)      0.722～0.726  
酸度Acidity(以H+计)/（mmol/100g）        ≤0.27  
折光率Refractive index n20/D             1.366～1.369  
灼烧残渣Residue ignition                 ≤0.01%


项目Item                                  分析纯
                                           (AR)
沸程Boiling range，℃                    67.0～69.0  
相对密度Specific gravity (20/20°C)      0.722～0.725  
酸度Acidity(以H+计)/（mmol/100g）        ≤0.1  
折光率Refractive index n20/D             1.367～1.369  
灼烧残渣Residue ignition                 ≤0.005%



项目                                      优级纯  
                                          (GR)
外观Appearance                           透明液体
红外光谱鉴别Infrared spectrometry        符合
纯度Purity                               >99.0 %  (GC)
相对密度Specific gravity (20/20°C)      0.7220 ～ 0.7320
折光率Refractive index n20/D             1.3660 ～ 1.3680
色度Color scale                          
水分Water                                
过氧化物Peroxides                        
酸度Acidity                              
稳定剂Stabilizer                         5 ～ 10 ppm BHT

贮存

密封阴凉避光保存。

用途

用作溶剂，还用于乙酸或丁酸稀溶液的浓缩回收