99%：

外观Appearance                                    透明液体

红外光谱鉴别Infrared spectrometry         符合

纯度Purity                                             >99% (GC)

相对密度Specific gravity (20/20°C)        1.2030-1.2080

折光率Refractive index n20/D                  1.4200-1.4220       

灰份Ash                                                ≤0.01 %     

项目                                                      化学纯  

                                                            (CP)

pH（170g/L，25℃）                              5.5～7.0 

相对密度Specific gravity (20/20°C)         1.2005～1.2060 

水分Wate                                               ≤0.1% 

折光率Refractive index n20/D                   1.420～1.422 

灼烧残渣Residue ignition                         ≤0.05% 

品级Grade                                             色谱纯  

                                                           ( for HPLC, 99.7%)

外观Appearance                                     Colorless Liquid

红外光谱Infrared spectrum                      Conforms to Structure

λ                                                           H2O reference

UV Absorbance 400nm                           ≤0.01

UV Absorbance 375nm                           ≤0.01

UV Absorbance 350nm                           ≤0.05

UV Absorbance 300nm                          ≤0.30

UV Absorbance 280nm                           ≤0.50

UV Absorbance 235nm                           ≤1.0

纯度Purity (GC)                                      ≥99.7 %

水分Water (by Karl Fischer)                      ≤0.02 %

蒸发残渣Residue on Evaporation               ≤0.0005 %

品级Grade                                             无水级, 99.7%  

                                                            ( anhydrous, 99.7%)

外观Appearance                                     Colorless Liquid

红外光谱Infrared spectrometry                Conforms to Structure

纯度Purity(GC)                                       ≥99.7%  

水分Water (by Karl Fischer)                     ≤0.002 %