Tonalide®; formula: C18H26O; CAS Registry Number: 1506-02-1

One of the world's most important fragrance among the chemical group of polycyclic musks

AHTN is a polycyclic musk used as synthetic fragrance, e.g. in cosmetics, personal care products like soaps, shampoos, deodorants, lotions, household and laundry cleaning products, air fresheners, papers and textiles.

Following use, AHTN enters the environment through waste waters and sewage sludge.  
Its degradation is slow. It is lipohilic and thus accumulated by organisms.

AHTN is phototoxic. Furthermore, it is toxic to aquatic organisms and soil organisms in prolonged tests. Weak endocrine activity was observed in laboratory tests.


Bream Bioindicator in rivers and lakes
Common bladder wrack Common brown alga of the coastal areas of the North and Baltic Sea
Blue mussel One of the most important edible mussel species common in the North and Baltic Sea
Eelpout As the only viviparous fish in German nearshore waters, it is a bioindicator in nearshore coastal marine ecosystems.

Sampling area

Saarländischer Verdichtungsraum Important, old-industrialised conurbation in Germany.
Bornhöveder Seengebiet Main water divide between the North- and Baltic Sea
Rhein Longest river in Germany
NP Vorpommersche Boddenlandschaft National Park in the largest brackish water (Bodden) habitat of the world.
BR/NP Wattenmeere National park in the world largest connected sand and mud flats.
Elbe Fourth largest river basin in Central Europe
Verdichtungsraum Halle-Leipzig Region in the chemical triangle of Central Germany

Sampling period

1986 - 2003