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ISO 660:2020

Animal and vegetable fats and oils — Determination of acid value and acidity

Mar 30, 2020

General information

90.60     Jun 5, 2025

ISO

ISO/TC 34/SC 11

International Standard

67.200.10  

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Scope

This document specifies three methods (two titrimetric and one potentiometric) for the determination of acidity in animal and vegetable fats and oils, hereinafter referred to as "fats". The acidity is expressed preferably as acid value or, alternatively, as acidity calculated conventionally.
This document is applicable to refined and crude vegetable or animal fats and oils, soap stock fatty acids or technical fatty acids. It does not apply to waxes.
Since the methods are completely non-specific, they do not apply to differentiating between mineral acids, free fatty acids and other organic acids. The acid value, therefore, includes any mineral acids that are present.
Milk and milk products (or fat coming from milk and milk products) are excluded from the Scope of this document.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 660:2009

NOW

PUBLISHED
ISO 660:2020
90.60 Close of review
Jun 5, 2025

National adoptions

SRPS EN ISO 660:2021  
ISS

Animal and vegetable fats and oils - Determination of acid value and acidity (ISO 660:2020)

60.60   Standard published

E034-2,11 more