Objavljen
The determination is carried out in the following way: Decomposition of the soap with sulphuric acid, and extraction of the fatty acids with light petroleum. Oxidation of the glycerol by periodic acid to formic acid and formaldehyde, and titration of the formic acid produced using a pH meter.
OBJAVLJEN
ISO 1066:1975
90.93
Odluka o potvrđivanju standarda
26. 6. 2021.
Metode ispitivanja sapuna - Određivanje sadržaja glicerina - Volumetrijska metoda (identičan sa ISO 1066:1975)
90.93 Odluka o potvrđivanju standarda