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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Phototransformation half-lives in air were calculated using the AOPWIN model v1.92. For the reaction of Cyclacet vapour with photochemically generated hydroxyl radicals in the atmosphere the half-life for a 12 -hour day (hydroxyl radical concentration of 1.5E6 molecule/cm3) is estimated to be 1.907 hours. For reaction with ozone the model estimated a half-life of 1.375 hours.

Concerning the (hydrolytic) stability of Cyclacet, no information on the substance itself is available. The information available is based on read-across from the structural analogue Cyclobutanate.

The half-life (hydrolysis) of Cyclacet (based on read-across of the results for Cyclobutanate) was estimated to be > 1 year at pH 4 and 7 and 13 days at pH 9 at 25°C.