Characterisation of ethoxylated fatty chains of anionic surfactants and determination of residual ethoxylated fatty alcohols.
Bachus et al. [1] recently described a new derivatisation method using 2-furoyl chloride for the characterisation of mixtures of polyethoxylated alcohols and their corresponding sulfates. This paper deals with the control of the derivatisation steps; hydrolysis and extraction conditions were optimised. The method is extended to the characterisation of alkyl sulfosuccinates, alkyl sulfoacetates and alkyl phosphates and to the analysis of residual polyethoxylated alcohols in surfactants. Extraction of non-ionic compounds using solid-phase extraction cartridges was performed before derivatisation. Residual amounts of alcohol were determined in five commercial anionic surfactants. Moreover, direct derivatisation without preliminary SPE in the same anionic surfactants proved to be efficient for dry samples.
Morvan
Julien
J
Laboratoire Synthèse et Chromatographie, UPRES EA 3233, Sciences et Méthodes Séparatives, Université de Rouen, Rue Tesnières, 76821, Mont Saint Aignan Cedex, France.
Saluden
Magali
M
Agasse
Valérie
V
Barbot
Florence
F
Cardinael
Pascal
P
Bouillon
Jean-Philippe
JP
Decock
Gautier
G
D017738:Alkanesulfonic Acids / Q000032:analysis / Q000737:chemistry; D002853:Chromatography, Liquid; D005233:Fatty Alcohols / Q000032:analysis* / Q000737:chemistry; D006868:Hydrolysis; D009943:Organophosphorus Compounds / Q000032:analysis / Q000737:chemistry; D013463:Sulfuric Acid Esters / Q000032:analysis / Q000737:chemistry; D013501:Surface-Active Agents / Q000032:analysis* / Q000302:isolation & purification
D017738:Alkanesulfonic Acids; D005233:Fatty Alcohols; D009943:Organophosphorus Compounds; D013463:Sulfuric Acid Esters; D013501:Surface-Active Agents