Registration Dossier

Environmental fate & pathways

Phototransformation in air

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Administrative data

Link to relevant study record(s)

Description of key information

In accordance with Annex X of the Regulation (EC) No 1907/2006 REACH concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), information regarding phototransformation in air is not mandatory.  However data are provided for information.

Key value for chemical safety assessment

Half-life in air:
3.1 h

Additional information

In accordance with Annex X of the Regulation (EC) No 1907/2006 REACH concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), information regarding phototransformation in air is not mandatory. However modeled data are provided for information.

The atmospheric photo-oxidation rate for o-tert-butylphenol was calculated using EPISuite v4.1 (U.S. Environmental Protection Agency EPISuite. Estimation Program Interface (EPI) Suite Version 4.1. Washington, DC). In view of the short half-life of 3.1 hours, photo-oxidation may be an important degradation process for the removal of o-tert-butylphenol from the atmosphere.