Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Above pH 5.5, virtually all acetylsalicylic acid will exist as the acetylsalicylate ion. Anions generally do not adsorb to particulate matter as strongly as their neutral counterparts and therefore, adsorption of acetylsalicylic acid is not expected to be an important environmental fate process. Moreover, the logKow of 1.19 lets not predict adsorption on particulate matters. This is confirmed by a MacKay Level I calculation that gives a distribution of more than 98 % is water compartment, around 1 % in soil and less than 1 % in air.