Diethyl oxalate

Test item                                  Specification                                   Test result
Appearance                             Colorless transparent liquid        Conforms
Acid(based on oxalic acid)        ≤  0.3%                                              0.08%
Moisture                                        ≤ 0.1%                                            0.04%
Distillation (180-188oC)               ≥ 95 ml                                       98.8ml
Residue on evaporation              ≤ 0.005%                                    0.004%
Assay                                      No less than 99.0%                           99.28%