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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 235-527-7 | CAS number: 12262-58-7
Endpoint summary
Administrative data
Description of key information
Cyclohexanone peroxide is a mixture of organic peroxides that are solid and are unstable neat. It is only marketed in formulations.
The melting point and boiling point of cyclohexanone peroxide are waived due to decomposition.
The relative density of cyclohexanone peroxide, 30% in dimethyl phthalate and diacetone alcohol (a commercial formulation) at 20°C is 1.1504. Note that cyclohexanone peroxide cannot be handled safely in pure form, so measurement of the neat density is waived.
The vapor pressure of a commercially marketed formulation has been measured (1.94 kPa @ 20) as the neat organic peroxide constituents are not stable.
The partition coefficient log Pow value for cyclohexanone peroxide as determined experimentally is 1.2.
The water solubility of cyclohexanone peroxide is 9.3 g/L at 25 °C.
Cyclohexanone peroxide (50 % formulation as tested) is classified as an Organic Peroxide Type D. The substance has no explosive and no oxidising properties.
The Self-Accelerating Decomposition Temperature (SADT) of the substances is 50 °C (reference SADT: CLP regulations 2.15.2.3 and UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, 5th revised edition, sub-sections 28.1, 28.2, 28.3 and Table 28.3.).
Additional information
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.
