Saponification value of fat and oil

Saponification value is expressed by potassium hydroxide in mg required to saponify one (1) gram of fat. It depends on the kind of fatty acid contained in the fat.
Measurement of saponification value is performed according to the below listed official test methods.

The sample is first saponified by adding 0.5 mol/L potassium hydroxide ethanol, and then the excessive potassium hydroxide is titrated with 0.5 mol/L hydrochloride acid until the endpoint is reached. EP is determined by the maximum inflexion point on the titration curve.

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