项目                                         生物学专用
纯度Purity                                >99.0% (GC) 
外观Appearance                       无色透明液体
水分Water                              <0.5 %
折光率Refractive index n20/D       1.5062 - 1.5082
色度Color scale                        <5 APHA
紫外吸收值UV (0.5 M in water)
260 nm A:                              <0.05
280 nm A:                              <0.02
水溶性Solubility (50% 水溶液)      完全
痕量分析Trace analysis 
铜Cu                                     < 0.1 ppm
铁Fe                                     < 0.5 ppm
铅Pb                                    < 0.5 ppm
锌Zn                                    < 0.5 ppm
pH                                       7 - 9 (1% 溶液,25°C)
电导率Conductivity                 <100 mmhos

项目                                   极谱记录仪和非水滴定专用
                               （for polarographic and nonaqueous titration）
外观Appearance                     无色透明液体
纯度Purity                            >99.0% (GC)
色度Color scale                     <10 APHA
水分Water                           <0.05 % (Coulometric)
紫外吸收值UV (1 cm cell vs water)
420 nm A:                          <0.015

项目                                      毛细管电泳级
                                              （测序级）
Abs.@280nm (undiluted)            ≤0.05
电导率Conductivity(uS)              ≤5.0
水分Moisture (KF)(%)                ≤0.75
纯度Purity(%)                          >99.5(GC)