90.93 Standard confirmed Oct 31, 2024
CEN
CEN/TC 276 Surface active agents
European Norm
71.100.40 Surface active agents
Published
This draft European Standard specifies a method for the determination of up to approximately 2 milli-equivalents of tertiary amine oxide. Components which lose their basicity in reaction with acetic anhydride by forming an amide (e.g. primary and secondary amines) interfere. If present, these primary and secondary amines must be determined by a different procedure e.g. reaction with carbondisulfide.
PUBLISHED
EN 1791:1997
90.93
Standard confirmed
Oct 31, 2024