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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Styrene oxide is readily biodegradable. In a CO2Evolution Test conducted according to OECD Guideline 301B styrene oxide was biodegraded to 81 and 90 % after 28 days. Therefore further testing on biodegradation (simulation testing in water and sediment and biodegradation in soil ) does not need to be conducted, as the test substance is readily biodegradable. Furthermore no direct or indirect exposure of environment is to be expected, as the test substance is processed under strictly controlled conditions as outlined in CSR chapter 9.