Abstract

ISO 660:2009 specifies three methods (two titrimetric and one potentiometric) for the determination of the acidity in animal and vegetable fats and oils. The acidity is expressed preferably as acid value, or alternatively as acidity calculated conventionally.

ISO 660:2009 is applicable to refined and crude vegetable or animal fats and oils, soap stock fatty acids or technical fatty acids. The methods are not applicable to waxes.

Since the methods are completely non-specific, they cannot be used to differentiate between mineral acids, free fatty acids, and other organic acids. The acid value, therefore, also includes any mineral acids that may be present.


General information 

  • Status
     :  Withdrawn
    Publication date
     : 2009-06
  • Edition
     : 3
    Number of pages
     : 9
  • Technical Committee
     : ISO/TC 34/SC 11 Animal and vegetable fats and oils
  • ICS
     :
    67.200.10 Animal and vegetable fats and oils

Life cycle


Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

Keep up to date with ISO

Sign up to our newsletter for the latest news, views and product information.

  2. Store
  3. Standards catalogue
  4. ICS
  5. 67
  6. 67.200
  7. 67.200.10
  8. ISO 660:2009