Registration Dossier
Registration Dossier
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EC number: 238-969-9 | CAS number: 14901-07-6
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
The atmospheric oxidation half-life of4-(2,6,6-trimethylcyclohex-1-ene-1-yl)-but-3-ene-2-one was estimated using the level III multimedia model. The overall persistence (Po) for4-(2,6,6-trimethylcyclohex-1-ene-1-yl)-but-3-ene-2-onein air is 44 days using the default emission scenario of the model. The estimated atmospheric oxidation estimates persistence based on a standard release scenario emitting equal amounts to soil, water, and air. It was estimated that the substance is not persistent in air medium as the half life period of4-(2,6,6-trimethylcyclohex-1-ene-1-yl)-but-3-ene-2-one in air is only 0.021 days. However, since the percentage of4-(2,6,6-trimethylcyclohex-1-ene-1-yl)-but-3-ene-2-one in air medium is 0 % it can be concluded that4-(2,6,6-trimethylcyclohex-1-ene-1-yl)-but-3-ene-2-oneis unlikely to be found in the atmosphere upon release and be incoporated in the soil and water compartment.
Key value for chemical safety assessment
- Half-life in air:
- 0.021 d
- Degradation rate constant with OH radicals:
- 0 cm³ molecule-1 s-1
Additional information
OVERALL OH Rate Constant = 0.00000000014 cm3/molecule-sec.
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