Registration Dossier
Registration Dossier
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EC number: 204-435-9 | CAS number: 120-92-3
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
A rate constant for cyclopentanone of 2.94X10-12 cm3/molecule-sec at 25 deg C has been determined (Dagaut et al., 1988), which corresponds to an atmospheric half-life of about 5.5 days at an atmospheric concentration of 5X10+5 hydroxyl radicals per cm3 . Direct photolysis in air is not expected to be an important environmental fate process (Silverstein and Bassler, 1963).
When exposed to light, Cyclopentanone degraded with formation of CO, ethylene and cyclobutane (Benson and Kistiakowsky, 1942)
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