标准摘要
[中文适用范围]: 本文件规定了一种测定航空燃料和车用汽油或其他易挥发馏出物中存在的 gums 的方法。它包括测定含有乙醇(体积分数不超过 85 %)和醚类氧合物以及沉积控制添加剂的产品的 gums 含量。对于车用乙醇(E85)燃料中 gum含量的测定,没有精度数据(见 14.1)。对于非航空燃料,还描述了测定残留物的庚烷不溶部分的方法。注意事项:本方法不适合测试含有大量低沸点不饱和化合物的汽油组分,因为它们在蒸发过程中可能引起爆炸。 [外文原描述]: ISO 6246:2017 specifies a method for determining the existent gum content of aviation fuels and the gum content of motor gasoline or other volatile distillates. It includes the determination of products containing ethanol (up to a volume fraction of 85 %) and ether-type oxygenates and deposit control additives. For determination of gum content in automotive ethanol (E85) fuel, no precision data is available (see 14.1). For non-aviation fuels, a procedure for the determination of the heptane-insoluble portion of the residue is also described.
英文名称Petroleum products — Gum content of fuels — Jet evaporation method