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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The weighted average estimated KOH and t1/2 of C12-14 ADMAES using AopWin v1.92 program (EPIWEB v 4.1) was found to be 3.81 x 10-11cm3/molecule-sec and 0.28 days, respectively.

Key value for chemical safety assessment

Half-life in air:
0.28 d
Degradation rate constant with OH radicals:
0 cm³ molecule-1 s-1

Additional information

The hydroxyl radical constant (KOH) and reaction half-life (t1/2) for C12 -14 ADMAES

was estimated using the AopWin v1.92 program of EPIWEB v 4.1. The KOH and t1/2 values were calculated on a weighted-average basis using the mole fractions of the individual components. The calculated t1/2 is based on a 12 hour daylight hydroxyl radical concentration of 1.5 x 106 molecules (radicals) /cm3 and hydroxyl rate constant of 5.46 x 10-11 cm3/molecule-sec. The estimated weighted average KOH and t1/2 of the substance was found to be 3.81 x 10-11 cm3/molecule-sec and 0.28 days, respectively (U.S EPA, 2012).