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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

After evaporation or exposure to air, 1,3,5-trioxane will be slowly degraded by photochemical processes.

Key value for chemical safety assessment

Additional information

The rate constant for the reaction of 1,3,5-trioxane with hydroxyl radicals in the atmosphere was estimated by the SRC AOPWIN v1.92 program as 10.25E-12 cm³/molecule*s. From this rate constant half-life for the reaction of OH radicals with trioxane is calculated as 37.5h assuming a 24h-day.