Reference number
ISO 7660:1983
ISO 7660:1983
© ISO 2024
International Standard
ISO 7660:1983
Essential oils — Determination of ester value of oils containing difficult-to-saponify esters
Edition 1
1983-10
1983-10
ISO 7660:1983
14479
Publicado
(Edición 1, 1983)
Esta publicación se revisó y confirmó por última vez en 2023.
Por lo tanto, esta versión es la actual.
Resumen
The method consists in hydrolysis of the esters present in a test portion by heating in the presence of a standard volumetric solution of potassium hydroxide in dimethylsulfoxide, and back-titration of the excess potassium hydroxide with a standard volumetric solution of sulfuric acid or hydrochloric acid.