Reference number
ISO 1066:1975
ISO 1066:1975
© ISO 2024
International Standard
ISO 1066:1975
Analysis of soaps — Determination of glycerol content — Titrimetric method
Edition 1
1975-05
1975-05
ISO 1066:1975
5559
Published
(Edition 1, 1975)
This publication was last reviewed and confirmed in 2021.
Therefore this version remains current.
Abstract
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.