Registration Dossier
Registration Dossier
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EC number: 218-760-9 | CAS number: 2226-96-2
Boiling point
Administrative data
Link to relevant study record(s)
Description of key information
The study was waived because 4-Hydroxy TEMPO decomposes before boiling.
Key value for chemical safety assessment
Additional information
In accordance with Column 2 adaptation statement information requirement section 7.3 of Annex VII Regulation (EC) No 1907/2006 (REACH), this study does not need to be conducted for substances which decompose before boiling. In the study for determination of the vapour pressure a differential scanning calorimetry test was conducted. The DSC test clearly shows a decomposition of 4-Hydroxy TEMPO in a range from 160 to 310 °C. Thus, the boiling point study was waived. In addition, the boiling point of 4-Hydroxy TEMPO is determined by QSAR estimation with the programme MBPWIN v.1.42 using EPIWIN software that is recommended in the REACH Guidance on information requirements and chemical safety assessment, Chapter R.7.1.3.3, Table R.7.1-12, thus the calculated value is reliable with restrictions. The boiling point was calculated with MBPWIN v.1.42 using EPIWN software. The boiling point was predicted to be 332.21 °C.
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.
