The use of ion-exchangers in detergent analysis, Part II

✍ Scribed by P. Voogt

• Book ID: 104586106
• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 571 KB
• Volume: 78
• Category: Article
• ISSN: 0165-0513
• DOI: 10.1002/recl.19590781111

✦ Synopsis

Abstract

The method described is supplementary to and an extension of a method previously described for the analysis of detergents by means of ion‐exchangers.

The A.D. acid (i.e., active detergent in acid form) adsorbed on the Dowex‐1, X2, [Ac^−^] ion‐exchanger can be quantitatively eluted with a solution of sodium acetate. After conversion of the sodium salts into the corresponding acids, the A.D. acid and acetic acid can be separated by ion‐exclusion. Fatty acids are adsorbed on Dowex‐1, X2, [OH^−^] and can be eluted with KOH‐solution.

Experiments with dodecylsulphuric acid, dodecylsulphonic acid and acyltaurines are described, but it is possible that the ion‐exclusion technique can be extended to other detergents.

Any urea present is adsorbed in alcoholic medium on Dowex‐50, X8, [H^+^].