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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 the air, the product will be rapidly degraded by photochemical processes.

Key value for chemical safety assessment

Half-life in air:
0.09 d

Additional information

The tested multiconstituent substance belongs to a category of substances consisting of similar composition. Starting substance for all group members is Propylidynetrimethanol which is ethoxylated and/or propoxylated to different magnitudes and - for some of the substances - gets modified with an amine compound. A more detailed description of the group is attached to section 13 of this dossier. Due to the multiconstituent nature of the test substance a representative structure was used in order to calculate a half-life in air. For this calculation a 24-hour day as well as a sensitizer-concentration (OH-radicals) of 500000 molecules/cm³ were assumed. The calculated rate constant of 171E-12 cm³/molecule-sec results in a half-life in the atmosphere of approx. 0.09 days (BASF SE 2012).