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: 207-079-2
CAS number: 431-89-0
Degradation rate constant with OH radicals: 1.3 - 1.7 × 10E-15cm3/molecule/secGWP: 3500 (100 years time horizon)
The atmospheric degradation for HFC
227ea involves the initial reaction with hydroxyl radicals in the
The constant rate for the OH
radicals-mediated photodegradation has been experimentally determined by
several groups. Tokuhashi al. (2004) reports a rate constant of 1.34 ±
0.08 × 10 -15cm3/molecule/sec at 298 °K. A
similar value of 1.7 × 10 -15cm3/molecule/sec
is listed in Evaluation Number 14 of JPL NASA (2003), as a result of a
combined fit of different experimental data.
global atmospheric lifetime of HFC 227ea is listed in the IPCC third
assessment (2001). An
official value of 33 years was estimated considering the tropospheric
lifetime, relative to CH3CCl3, at 272 °K, a
default stratospheric loss of 8% of the tropospheric loss and an
oceanic lifetime of 10650 years.
A global warming potential of 3500 was
calculated for a time horizon of 100 years, by considering the
calculated global atmospheric lifetime and a radiative efficiency of
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.
Questo sito web si avvale di cookie affinché possiate usufruire della migliore esperienza sui nostri siti web.
Welcome to the ECHA website. This site is not fully supported in Internet Explorer 7 (and earlier versions). Please upgrade your Internet Explorer to a newer version.
Do not show this message again