对羟基苯甲醛

类白色结晶性粉末，有芳香味。易溶于乙醇，乙醚，无色针状结晶。微有芳香气味。在常压下升华而不分解。易溶于乙醇、乙醚，溶于热水，微溶于苯和冷水。半数致死量(小鼠，腹腔)500mg/kg。有刺激性。
密度：1.129
熔点：116℃

项目                                     分析纯  
                                         (AR)
外观Appearance                           黄色至浅黄色结晶粉末
红外光谱鉴别Infrared spectrometry        符合
纯度Purity                               ≥98.0% (GC)
熔点Melting point                        115°C - 119°C
醇溶解试验Solubility in Methanol         合格


项目                                      化学纯  
                                           (CP)
熔点Melting point ℃                      115.0~118.0℃  
水溶解试验Solubility in water             合格
灼烧残渣Residue ignition                  ≤0.1%  

项目                                      ≥97%  
外观Appearance                            Light yellow to brown powder
红外光谱Infrared spectrum                 Conforms to Structure
纯度Purity (Titration by NaOH)            97.0 - 103.0 %
纯度Purity (GC)                           ≥97.0 %
熔点Melting point                         115-119 °C
溶解试验Solubility                        Yellow to Orange，Clear to Slightly Hazy（c = 5%, 95% Ethanol）