ISO 7537-1997 石油产品 总酸值的测定 半微量颜色指示剂滴定法

标准号：ISO 7537-1997
中文标准名称：石油产品 总酸值的测定 半微量颜色指示剂滴定法
英文标准名称：Petroleum products - Determination of acid number - Semi-micro colour-indicator titration method
标准类型：E30
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：E30
国际标准分类号：75.080
适用范围：This International Standard specifies a semi-micro colour-indicator method for the determination of acidic constituents in new or used petroleum products and lubricants soluble in mixtures of toluene and propan-2-ol, or capable of existing as suspensions in such mixtures, and where the suspended material is sufficiently dissociated that its acidic components can be titrated. The method is especially intended for applications in which the amount of sample available to be analysed is too small to allow accurate analysis by ISO 6619 or ISO 6618. It is applicable to the determination of acids having dissociation constants in water larger than 10