標準號：ISO 7537-1997
中文標準名稱：石油產品 總酸值的測定 半微量顏色指示劑滴定法
英文標準名稱：Petroleum products - Determination of acid number - Semi-micro colour-indicator titration method
標準類型：E30
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：E30
國際標準分類號：75.080
適用范圍：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