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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Phototransformation in air

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Administrative data

Link to relevant study record(s)

Description of key information

Hydroxyl radical reaction half-life for a representative constituent of the UVCB test item was calculated to be 1.967 hours based on 12 hours of daylight (AOPWIN v1.92).

Key value for chemical safety assessment

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

Additional information

EPISUITE (AOPWIN v1.92) was used to calculate the hydroxyl radical reaction half-life for a representative constituent of the UVCB substance. The degradation rate constant was 65.2384 x 10E-12 cm3/molecule-sec and half-life was estimated to be 1.967 hours based on a 12-hour day.