项目                                                     Item 分析纯
(AR)
纯度Purity                                             ≥99.0% (GC)
比重Specific gravity (20/20°C)               0.942-0.946
灼烧残渣(以硫酸盐计)Ignition residue   ≤0.05%
游离酸Free acids                                  ≤0.01%
高聚合物Polymers 合格
水分water                                            ≤0.05%
阻聚剂Inhibitor                                     0.006-0.01%
项目 化学纯
(CP)
高聚合物Polymers                                合格
纯度Purity ≥98.0%
酸度Acidity(以H+计)/（mmol/100g） ≤0.60
比重Specific gravity (25/25°C) 0.938～0.941
灼烧残渣Residue ignition                     ≤0.05%
阻聚剂Stablizer                                   0.01～0.02%
>99.5%(GC) :

外观Appearance                                 无色液体
红外光谱鉴别Infrared spectrometry    和对照品匹配
纯度Purity                                          >99.5% (GC)
比重Specific gravity (20/20°C) 0.9440 - 0.9460
折光率Refractive index n20/D 1.4130 - 1.4160