Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

AAPBs are readily biodegradable, biodegradable under anaerobic conditions and under different environmental conditions (water, seawater, sewage treatment plants). The ultimate biodegradation was proven and a mean elimination of 99 % was calculated. Therefore further investigation on biodegradation in soil does not need to be conducted in accordance with REACH Regulation Annex IX,



Experimental results from several guideline studies (e.g. OECD 301 A, 301 B, 301 D, 301 E) on the aerobic biodegradation of C8 -18 and C18 unsatd. AAPB, C12 AAPB and C8 -18 AAPB are available. Based on the results, C8 -18 and C18 unsatd AAPB AAPB, C12 AAPB, and C8 -18 AAPB can be regarded as readily biodegradable. The inherent biodegradability of C12-18 AAPB was proven in a Zahn-Wellens Test. Based on these results, the AAPBs can be regarded as readily biodegradable.

The anaerobic biodegradability of C8 -18 and C18 unsatd. AAPB AAPB and C8-18 AAPB was investigated in studies conducted similar to OECD guideline 311. Based on the results of these studies, the AAPBs are considered to be biodegradable under anaerobic condition.


Furthermore, the ultimate biodegradation of the AAPBs was proven; a mean elimination of 99% was calculated for the AAPBs. Based on the results of the biodegradation study in seawater, the AAPBs are considered as readily biodegradable in the marine environment.