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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 246-678-3 | CAS number: 25155-25-3
Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
Description of key information
[1,3(or 1,4)-Phenylenebis(1-methylethylidene)]bis[tert-butyl] peroxide appears in the form of big compact blocks and powder (8% of the test item with a mean diameter of 214 µm).
Additional information
An experimental study compliant with the OCDE Guideline (Method 110), selected as Key Study, shows that [1,3 (or 1,4)-Phenylenebis(1-methylethylidene)]bis[ter-butyl]peroxide appears in the form of big compact blocks (92% of the test item) and powder (8% of the test item).
The particle size determination has been conducted on the powder fraction by laser granulometry. It shows that 7% of particles present a mean diameter of 214µm, and only 0.75% of particles present a mean diameter lower than 100µm (99µm).
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.
