Registration Dossier

Environmental fate & pathways

Phototransformation in air

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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