The second edition cancels and replaces the first edition (ISO 3657:1977), of which it constitutes a technical revision. The method consists in boiling of a sample under reflux with ethanolic potassium hydroxide solution, followed by titration of the excess potassium hydroxide with standard volumetric hydrochloric acid solution.
Status: WithdrawnPublication date: 1988-12
Edition: 2Number of pages: 2
Technical Committee: ISO/TC 34/SC 11 Animal and vegetable fats and oils
- ICS :
- 67.200.10 Animal and vegetable fats and oils
ISO 3657:1988Stage: 95.99
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