ISO-2272 › Surface active agents -- Soaps -- Determination of low contents of free glycerol by molecular absorption spectrometry

ISO-2272 - 2ND EDITION - CURRENT


Document Center Inc. is an authorized dealer of ISO standards.
The following bibliographic material is provided to assist you with your purchasing decision:


The determination is carried out in the following way: Decomposition of the soap by sulfuric acid and extraction of the fatty acida with light petroleum. Oxidation of the free glycerol remaining in the aqueous phase by periodic acid to formic acid and formaldehyde. On reaction with chromotropic acid, the aldehyde formed gives an absorbing compound whose absorbance is propotional to the free glycerol content. Spectrometric measurement of the absorbance at a wavelength about 571 mm.

ORDER

Price:

$52.38        


Want this as a site license?

To find similar documents by classification:

71.100.40 (Surface active agents)

This document comes with our free Notification Service, good for the life of the document.

This document is available in either Paper or PDF format.

Document Number

ISO 2272:1989

Revision Level

2ND EDITION

Status

Current

Publication Date

July 15, 1989

Committee Number

ISO TC 91