质量标准

项目Item                                   化学纯
                                            (CP)
沸程范围Boiling range,℃                  133-135
                                           (95%)
密度(20℃)Density,g/mL                  0.930-0.933
不挥发物Novolative,%                    ≤  0.005
酸度(以CH3COOH计)Acidity,%              ≤  0.61
与水混合度Miscibility with water            合格
醇中溶解试验Solubility(in alcohol)          合格


项目                                      分析纯  
                                           (AR)
沸程Boiling range,℃                      133.5～135.5
比重Specific gravity (20/20°C)           0.928～0.930    
水溶解试验Solubility(in water)            合格  
酸度Acidity(以H+计)/（mmol/100g）         ≤0.083  
乙醇溶解试验Solubility(in alcohol)        合格  
灼烧残渣Residue ignition                  ≤0.005%
水分water                                 ≤0.2%  


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)         0.9294±0.005  
水份Water                               ≤0.1%(K·F)
色度Color scale                         ≤15(Pt-Co)    
            

贮存

密封保存。

用途

该品为低挥发性溶剂。本品主要用于硝基纤维素漆和飞机翼涂料的溶剂，还可用作清漆的涂膜剂，净化液、染料浴、水溶性颜料和染料溶液，精炼皮革的溶剂，并能增加乳胶的稳定性。