This International Standard specifies a method for the determination of the saponification value of animal and vegetable fats and oils. The saponification value is a measure of the free and esterified acids present in fats and fatty acids.
The method is applicable to refined and crude vegetable and animal fats.
If mineral acids are present, the results given by this method are not interpretable unless the mineral acids are determined separately.
ISO 3657:2002 history
2023ISO 3657:2023 Animal and vegetable fats and oils — Determination of saponification value
2020ISO 3657:2020 Animal and vegetable fats and oils — Determination of saponification value
2013ISO 3657:2013 Animal and vegetable fats and oils.Determination of saponification value
2002ISO 3657:2002 Animal and vegetable fats and oils - Determination of saponification value
1988ISO 3657:1988 Animal and vegetable fats and oils; determination of saponification value
1977ISO 3657:1977 Animal and vegetable oils and fats — Determination of saponification value