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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

‘Propane-1,2-diol, propoxylated’ undergoes reactions with hydroxyl radicals in the atmosphere, the calculated rate constant with is 9.974 E-11 cm3/molecule-sec.

Key value for chemical safety assessment

Half-life in air:
0.107 d
Degradation rate constant with OH radicals:
0 m³ molecule-1 s-1

Additional information

The calculated half life of ‘propane-1,2-diol, propoxylated’ is 0.107 days with an OH-radical concentration of 1.5E06 OH/cm3 (U.S. EPA, 2000). The overall rate constant is 9.974 E-11 cm3/molecule-sec. No reaction of ‘propane-1,2-diol, propoxylated’ with ozone or any other atoms were calculated. Overall, ‘propane-1,2-diol, propoxylated’ is rapidly degraded in the atmosphere.