GB/T 19186-2003 in English

《GB/T 19186-2003工业用丙烯中齐聚物含量的测定 气相色谱法》由TC63（全国化学标准化技术委员会）归口，TC63SC4（全国化学标准化技术委员会石油化学分会）执行，主管部门为中国石油和化学工业联合会。
本标准规定了用气相色谱法测定工业用丙烯中二聚物、三聚物的含量。

Scope

This standard specifies the determination of dimers and trimers in industrial propylene by gas chromatography. This standard is applicable to the determination of propylene dimer (hexene) greater than 20 m9/kg and propylene trimer (nonene) greater than 30 m9/kg in industrial propylene. Note: Propylene dimer is the main component of the so-called "green oil" in industrial production plants of propylene, which is formed in the partial hydrogenation process to remove propadiene and propyne from propylene. Propylene dimer is mainly composed of the following substances: methylpentene, 2,3-methylbutene (about 25%), 1-hexene (about 12%) and Ce diene (about 20%) ). 1.2 This standard is not intended to address all safety issues associated with its use. Therefore, users of this standard should establish in advance appropriate safety and security measures and determine appropriate regulations.