Ambrette Seed Absolute (aromatherapy)

Commercial Ambrette Seed Absolute <….> is produced from the essential (distilled) oil either by neutralization and subsequent elimination of the fatty acids, or it is steam distilled from the extracted (true) concrète. In other words, the absolute is the essential oil minus the fatty acids which are solid and insoluble in cold alcohol. They also tend to produce a rancid odor in ambrette seed oil upon ageing.
Arctander, Steffen . Perfume and Flavor Materials of Natural Origin (p. 71). 

ibiscus abelmoschus

CAS 84455-19-6