ISO 17293-2:2014

INTERNATIONAL ISO
STANDARD 17293-2
First edition
2014-04-01
Surface active agents — Determination
of chloroacetic acid (chloroacetate) in
surfactants —
Part 2:
Ionic chromatographic method
Agents de surface — Détermination de l’acide chloroacétique
(chloroacétate) dans les agents tensioactifs —
Partie 2: Méthode par chromatographie ionique
Reference number
©
ISO 2014
© ISO 2014
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ii © ISO 2014 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Principle . 1
4 Reagents . 1
4.1 General . 1
5 Apparatus . 2
6 Procedure. 3
6.1 General . 3
6.2 Ion chromatographic condition . 3
6.3 Calibration . 3
6.4 Sampling and analysis . 3
7 Results and calculation . 4
7.1 General . 4
7.2 Content of monochloroacetic acid . 4
7.3 Content of dichloroacetic acid . 4
8 Precision . 4
8.1 Repeatability limit . 4
8.2 Reproducible limit . 5
9 Test report . 5
Annex A (informative) Typical chromatograms . 6
Foreword
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The committee responsible for this document is ISO/TC 91, Surface active agents.
ISO 17293 consists of the following parts, under the general title Surface active agents – Determination of
chloroacetic acid (chloroacetate) in surfactants:
— Part 1: HPLC method
— Part 2: Ionic chromatographic method
iv © ISO 2014 – All rights reserved

INTERNATIONAL STANDARD ISO 17293-2:2014(E)
Surface active agents — Determination of chloroacetic acid
(chloroacetate) in surfactants —
Part 2:
Ionic chromatographic method
1 Scope
This part of ISO 17293 specifies a method for the determination of monochloroacetic acid
(monochloroacetate) and dichloroacetic acid (dichloroacetate) in surfactants by ion chromatographic
method.
The method applies for anionic surfactants such as alkyl (phenyl) ethoxylated carboxylate (AEC) or
amphoteric surfactants such as alkyl imidazoline carboxylate, alkyl dimethyl betaine, and fatty acetyl
propyl dimethyl betaine.
The limit of detection (LOD) is ≤0,01 µg/ml for monochloroacetic acid and ≤0,05 µg/ml for dichloroacetic
acid; and the limit of quantification (LOQ) is ≤0,1 µg/ml for each standard (using a standard solution).
The LOD, at 1 g of sample weight, is ≤1 mg/kg for monochloroacetic acid and ≤5 mg/kg for dichloroacetic
acid; and the LOQ is ≤10 mg/kg for each acid.
2 Normative references
The following documents, in whole or in part, are
...