Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

Additional information

1,3,5 -trimethylbenzene is not expected to hydrolyse based on a lack of hydrolysable functional groups. However, according to Atkinson (1990), the kinetic rate constant for the reaction of 1,3,5-trimethylbenzene with OH radicals is measured to be 57.5 E-12 cm3/mol/s, indicating that the atmospheric half-life would be 7 hours.

The phototransformation results indicate a very short half-life in the environment, which supports the conclusion that 1,3,5-trimethylbenzene would not meet the screening criteria for being P/vP.