This European Standard specifies the determination of up to approximately 2 milli-equivalents of tertiary amine oxide. Components which loose their basicity in reaction with acetic anhydride by forming an amide (e.g. primary and secondary amines) interfere. If present, these amines should be determined by a different procedure e.g. reaction with carbonsulfide. The method is applicable to solids or to aqueous solutions of the active material. The molecular mass of the amine oxide shall be known if its content is expressed as a percentage of mass.
DS/EN 1791:1998 history
1998DS/EN 1791:1998 Surface active agents - Fatty alkyl dimethyl amine oxides - Determination of the amine oxide content