正辛酸  

n-Octanoic  acid  

Cas号:124-07-2        MDL:    --MFCD00004429    

Beilstein    1747180    EINECS:    --204-677-5    

分子式  C8H16O2；  CH3(CH2)6COOH  

分子量  144.21  

别名正  辛酸;正辛酸锂;辛酸;羊脂酸;正辛酸(羊脂酸);辛酸

Caprylic  acid  

分子结构式    

性状  无色油状液体，略有不愉快气味。溶于醇和醚，水中溶解度:0.68  g/L  (20°C)。

密度:    0.91    

熔点:    15-17  °C  

沸点:    238  °C  

闪点:    110  °C  

折光率nD20:    1.428      

        

质量标准      

    项目                                                                        分析纯          

                                                                                (AR)  

纯度Purity                                                            ≥99.0%  (GC)  

酸值Acid  value，mgKOH/g                                  385-390

碘值Iodine  value                                                

<0.5  g  I2/100  g  >熔点Melting  point                                              14-17°C  

皂化值Saponification  value，mgKOH/g          385-392  

水分Water                                                              &le;0.2%  

未皂化值unsap.matter                                        &le;1.0%  

色泽Colour（Lovibond  5%）：　R                    &le;0.2  

                                                          Y                    &le;1  

  

项目                                                                        化学纯          

                                                                                  (CP)  

含量Assay                                                              &ge;98.0%    

结晶点Freeging  point，℃                                &ge;9.0    

相对密度Specific  gravity  (20/20°C)          0.905～0.915    

折光率Refractive  index  n20/D                        1.427～1.429    

灼烧残渣Residue  ignition                                &le;0.05%        

贮存  密封阴凉干燥保存。  

用途  气相色谱分析标准。防腐剂。杀菌剂。香料、染料、增塑剂、润滑剂的制造。  

联合国编号  3265