Log inSign up
LANGUAGE en
Menu
STOREE-ReadingHelp centerContactsDelivery chargesABOUT US News
SEARCH
0
Total price
0 EUR
PRICES include / exclude VAT
Homepage>ISO Standards>ISO 2272:1989-Surface active agents — Soaps — Determination of low contents of free glycerol by molecular absorption spectrometry
Sponsored link
download between 0-24 hoursReleased: 1989
ISO 2272:1989-Surface active agents — Soaps — Determination of low contents of free glycerol by molecular absorption spectrometry

ISO 2272:1989

ISO 2272:1989-Surface active agents — Soaps — Determination of low contents of free glycerol by molecular absorption spectrometry

Format
Availability
Price and currency
English PDF
Immediate download
46.00 EUR
English Hardcopy
In stock
46.00 EUR
French PDF
Immediate download
46.00 EUR
French Hardcopy
In stock
46.00 EUR
Standard´s number:ISO 2272:1989
Pages:3
Edition:2
Released:1989
DESCRIPTION

ISO 2272:1989


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.
Print