Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Decane half-life in air is 0.963 days. Therefore, decane is to be considered as not persistent in the atmospheric compartment (DT50 less than 2 days).

Undecane half-life in air is 0.854 days. Therefore, undecane is to be considered as not persistent in the atmospheric compartment (DT50 less than 2 days).

Dodecane half-life in air is 0.767 days. Therefore, dodecane is to be considered as not persistent in the atmospheric compartment (DT50 less than 2 days).

Tetradecane half-life in air is 0.648 days. Therefore, tetradecane is to be considered as not persistent in the atmospheric compartment (DT50 less than 2 days).

Key value for chemical safety assessment

Additional information

The phototransformation in air was estimated from the AOPWIN v1.92 calculations of phototransformation.

The phototransformation rate of decane is 11.11 x 10-12 cm3/molecule/sec. The calculated half-life is 0.963 d (11.552 hrs). This value is largely below the trigger limit (2 days). Therefore, decane is not persistent.

The phototransformation rate of undecane is 12.52 x 10-12 cm3/molecule/sec. The calculated half-life is 0.854 d (10.249 hrs). This value is largely below the trigger limit (2 days). Therefore, undecane is not persistent.

The phototransformation rate for dodecane is 13.94 x 10-12 cm3/molecule/sec. The calculated half-life is 0.767 d (9.210 hrs). This value is largely below the trigger limit (2 days). Therefore, dodecane is not persistent.

The phototransformation rate of tetradecane is 16.76 x 10-12 cm3/molecule/sec. The calculated half-life is 0.638 d (7.657 hrs). This value is largely below the trigger limit (2 days). Therefore, tetradecane is not persistent.