Quality Standard: 	   	Q/(HG)SJ 445-91
项目Item                         分析纯 化学纯  
                                            (AR)    (CP)    
含量[CH3(CH2)10CH2SO3Na]Assay,%           ≥ 98.0    97.0    
水分(H2O)Water,%                           ≤ 0.5    1.0      
不皂化物Not saponifiable matter,%          ≤ 0.5    1.0      
硫酸钠(Na2SO4)Sodium sulfate,%             ≤ 2.0    3.0    
品级Grade                               离子对色谱专用
                                (for ion pair chromatography)
外观Appearance                          白色结晶粉末
红外光谱鉴别Infrared spectrometry       和对照匹配
纯度Purity                              ≥99.0% (离子交换滴定)  
熔点Melting point                       >300°C
干燥损失Loss on drying                  <2 %
λ 5 % in H2O ((C=0.18 M in  hot water(50°C) )
紫外吸收UV absorption
  λ: 210 nm A:                          <0.05
  λ: 220 nm A:                          <0.03
  λ: 230 nm A:                          <0.02
  λ: 500 nm A:                          <0.02