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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

QSAR model, AOPWIN v1.91, key data, validity 2:

Half-life in air = 0.083 days.

TBEP is therefore not considered as persistent in the air due to photo oxidation processes.

Key value for chemical safety assessment

Half-life in air:
0.083 d

Additional information

A half-life is calculated using AOPWIN program v1.91 (US-EPA Syracuse Research). The half-life is calculated based on the atmospheric oxidation of tris(2 -butoxyethyl) phosphate by OH radicals. Considering an overall OH rate constant of 128.7102E-12 cm3/molecule-sec the half-life is calculated to be 0.083 days (about 1 hour).