ISO 3771:1994 石油产品.碱总值的测定.高氯酸电位滴定法

标准编号：ISO 3771:1994

中文名称：石油产品.碱总值的测定.高氯酸电位滴定法

英文名称：Petroleum products — Determination of base number — Perchloric acid potentiometric titration method

发布日期：1994-08

标准范围

取消并替换第一版（1977年）。建立了在冰醋酸中用高氯酸电位滴定法测定石油产品中基本成分的方法。描述了该方法的两种变体，使用不同的滴定溶剂体积和试样质量。已确定该方法精度值的基准值范围为:未使用的油-基准值从6到70；添加剂浓缩物——基数从5到300；采用正向滴定法的废油——碱基值从5到27。

Cancels and replaces the first edition (1977). Establishes a method for the determination of basic constituents in petroleum products by potentiometric titration with perchloric acid in glacial acetic acid. Two variations of the method are described, using different titration solvent volumes and test sample masses. The ranges of base number values for which precision values for the method have been established are: unused oils - base numbers from 6 to 70; additive concentrates - base numbers from 5 to 300; used oils on which were employed the forward titrations - base numbers from 5 to 27.

标准预览图