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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Since TMQ is a mixture of oligomers of 1,2-Dihydro-2,2,4-trimethylquinoline, TMQ-dimer and TMQ-trimer were used as typical composition to estimate its phototransformation half-life in air with AOPWIN v1.92. The estimated Half-lifes was in the range of 1.5 -2.0 hours (Currenta, 2010), which is much less than 48 hours; and hence no potential of long-range transport of TMQ in air is expected.

Key value for chemical safety assessment

Half-life in air:
2 h

Additional information