ISO 2871-1: Determination of High Molecular Mass Cationic Active Substance

The ISO 2871-1 standard describes quaternary ammonium compounds in which two of the alkyl groups each contain 10 or more carbon atoms, such as distearyl-dimethyl-ammonium chlorides, or imidazoline or 3-methylimidazoline salts in which the long-chain acylaminoethyl and alkyl groups are substituted in the 1- and 2-positions, respectively.

The method is applicable to solids or aqueous solutions of the active substance when the relative molecular mass of the cationic-active substance is known or has already been determined if its content is expressed as a percentage by mass. If anionic surfactants are present, the method cannot be applied.

Surface actives whose hydrophilic ends carry a positive charge are called cationic surfactants. Compared to anionic active substances, Cationic Active Substances can be used in fabric softeners, hair conditioners and some disinfectants since they are attracted to negatively charged surfaces such as hair and skin due to their positive charge.

ISO 2871-1:Surface active agents — Detergents — Determination of cationic-active matter content — Part 1: High-molecular-mass cationic-active matter

You can contact Nanolab Detergent Analysis Laboratory for Determination of High Molecular Mass Cationic Active Substance in Surfactants, Disinfectants and Detergents.