对乙酰氨基苯酚

性状描述: 无色单斜棱形结晶。无臭,味苦。溶于甲醇、乙醇、二氯乙烯、丙酮和乙酸乙酯,微溶于乙醚和热水,几乎不溶于冷水,不溶于石油醚、戊烷和苯。相对密度(d214)1.293。熔点169～170.5℃。最大吸收波长250nm(乙醇,ε13800)。有毒,半数致死量(小鼠,经口)338mG/kG。有刺激性。

质量标准: 外观Appearance                           白色结晶或结晶性粉末
纯度Purity                               >99.0%(GC)  
红外光谱鉴别Infrared spectrometry        符合
熔点Melting point                        168°C-172°C


项目                                     化学纯  
                                          (CP)
pH（饱和溶液，25℃）                      6.0～7.0  
对氨基酚p-aminophenol(10)                 合格  
干燥失重drying loss                      ≤0.5%  
含量Assay                                ≥98.0%  
氯化物Chloride                           ≤0.02%  
熔点Melting point /℃                    168.0～171.0（2.0）  
乙醇溶解试验solubility in ethanol         合格    
重金属Heavy metals                       ≤0.001%  
灼烧残渣Ignition residue                 ≤0.1%  


品级Grade                               药用级  
                                        (USP)
Identity                                Pass
  (A, B, C)
Initial Melting Point                  168 °C
Final Melting Point                    172 °C
Water (by Karl Fischer)                ≤0.5 %
Residue on ignition (Ash)              ≤0.1 %
Chloride Content                       ≤0.014 %
Sulfate (SO4)                          ≤0.02 %
Heavy Metal                            ≤0.001 %
Sulfide                                Pass
Free P-Aminophenol                     ≤0.005 %
Limit of P-Chloroacetanilide           ≤0.001
Readily Carbonizable Substances       Pass
Residual Solvent                      Meets Requirements
Assay                                 98.0 - 101.0 %
  (Anhydrous Basis)

储存条件: 密封阴凉干燥避光保存。

用途: 药物中间体。偶氮染料。照相化学药品。