Essential oils — Determination of ester value of oils containing difficult-to-saponify esters
NORMA vydána dne 1.10.1983
Označení normy: ISO 7660:1983
Datum vydání normy: 1.10.1983
Počet stran: 2
Přibližná hmotnost: 6 g (0.01 liber)
Země: Mezinárodní technická norma
Kategorie: 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.