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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Phototransformation in air

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The calculated half-life of o-toluidine by photodegradation in air was 2.915 hours with an Overall OH rate constant of 132.0953E-12 cm³/molecule-sec.

Key value for chemical safety assessment

Half-life in air:
2.915 h
Degradation rate constant with OH radicals:
0 cm³ molecule-1 s-1

Additional information

The indirect photodegradation in air was calculated with the Estimation Program Interface EPI-Suite version 4.11. The estimated half-life of the substance was 2.915 hours with an Overall OH rate constant of 132.0953E-12 cm³/molecule-sec considering a daily (24h) mean OH-radical concentration of 500 000 radicals per cm3.

The estimation rules applied for the substance appears appropriate.

The predicted result for o-toluidine can be considered reliable yielding a useful result for further assessment.