Essential oils — Determination of ester value of oils containing difficult-to-saponify esters
NORMA vydaná dňa 1.10.1983
Označenie normy: ISO 7660:1983
Dátum vydania normy: 1.10.1983
Počet strán: 2
Približná hmotnosť: 6 g (0.01 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO
Description / Abstract: 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.