Standard No.:	GB/T 18609-2011
English Name:	Determination of acid number of crude oil by potentiometric titration
Chinese Name:	原油酸值的测定 电位滴定法
Chinese Classification:	E21    Crude petroleum
Professional Classification:	GB    National Standard
Issued by:	AQSIQ; SAC
Issued on:	2011-9-29
Implemented on:	2012-1-1
Status:	valid
Superseding:	GB/T 18609-2001 Standard test method for acid number of crude oil by potentiometric titration
Language:	English
File Format:	PDF
Word Count:	7000 words
Price(USD):	210.00
Delivery:	via email in 1~3 business day

本标准规定了采用电位滴定法测定原油酸值的方法。
本标准适用于测定能够溶解于甲苯和异丙醇混合溶剂中的原油中的酸性组分。这些酸性组分在水中的离解常数要大于10-9;离解常数小于10-9的极弱酸不产生干扰。水解常数大于10-9的盐类将会参与反应。酸值的测定范围为0.1mg/g~150mg/g。
本标准适用于测定水的质量分数小于0.5%的原油。