Објављен
Gives two methods for the potentiometric determination of the carbonyl value of essential oils which contain carbonyl compounds. Method 1 is based on a cold oximation reaction with hydrxoylammonium chloride with exception of citronellal which need a low temperature to avoid cyclization phenomena and acetylization. Method 2 is based on a hot oximation reaction with hydroxylammonium chloride and applies to essential oils whose main constituents are ketones which are general oximable only with difficulty.
ОБЈАВЉЕН
ISO 1279:1996
90.93
Одлука о потврђивању стандарда
15. 6. 2022.
Etarska ulja - Određivanje karbonilnog broja - Potenciometrijske metode sa hidroksilamonijum hloridom
90.93 Одлука о потврђивању стандарда