Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 905-459-9 | CAS number: -
Endpoint summary
Administrative data
Description of key information
Additional information
The photodegradation of m- and p-diisopropylbenzene in air by reaction with OH radicals was calculated using EPIWIN v3.20, AOPWIN v1.92. Based on the reaction rate constants k(OH)= 15.524 x 10E-12 cm³/molecule x sec (m-diisopropylbenzene) and k(OH)= 10.1158 x 10E-12 cm³/molecule x sec (p-diisopropylbenzene) and assuming a OH radical concentration of 5 x 10E5 radicals/cm³ (24 h d) half-lives of 24.8 h (m-diisopropylbenzene) and 38.07 h (p-diisopropylbenzene) were calculated. For m- diisopropylbenzene a half-life of 8.268 hours was calculated based on the aforementioned rate constant and assuming a hydroxyl radical concentration in the atmosphere of 1.5E6 OH/cm3 (12 h day); accordingly a half-life time of 12.688 hours was calculated for p-diisopropylbenzene based on the above cited rate constant and assuming a hydroxyl radical concentration in the atmosphere of 1.5E6 OH/cm3 (12 h day). In a study conducted according to OECD Guideline 111 (Hydrolysis as a Function of pH), diisopropylbenzene proved to be resistant to hydrolysis: the chemical was stable at pH 4, 7 and 9 at 50 degree for five days.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
