# ISO 660:2009 — Withdrawn and superseded ISO standards

For ISO 660:2009, item title is Animal and vegetable fats and oils — Determination of acid value and acidity; status code is 9599; successor is ISO 660:2020; withdrawn / published date is 2009-06-09, recorded from its source on 2026-08-05.

- **Identifier:** ISO 660:2009 _(verified: appears in the quote below)_
- **Item title:** Animal and vegetable fats and oils — Determination of acid value and acidity _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 660:2020
- **Withdrawn / published date:** 2009-06-09 _(verified: appears in the quote below)_

## What the source says

> 44879,IS,,ISO 660:2009,Animal and vegetable fats and oils — Determination of acid value and acidity,Corps gras d'origines animale et végétale — Détermination de l'indice d'acide et de l'acidité,2009-06-09,3,['67.200.10'],ISO/TC 34/SC 11,9599,"[36169,4817]",[75594],"['en','fr','ru']",9,"<p>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.</p><p>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

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).