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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Key value for chemical safety assessment

Half-life in air:
1.55 min

Additional information

The half-life of mmt was evaluated in air and as an mmt/air mixture in a quartz reaction tube.

Depending on the methodology, the half-life varied from 8 -18 seconds in air to between 25 and 93 seconds in the quartz reaction tube. Regardless of the method used, the half-life of mmt in air would be a maximum of 1.55 minutes.