Registration Dossier
Registration Dossier
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EC number: 206-534-2 | CAS number: 353-50-4
Phototransformation in air
Administrative data
- Endpoint:
- phototransformation in air
- Remarks:
- Tropospheric removal
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- accepted calculation method
Data source
Reference
- Reference Type:
- publication
- Title:
- A global three-dimensional study of the fate of HCFCs and HFC-134a in the troposphere
- Author:
- Kanakidou M, Dentener FJ, Crutzen PJ
- Year:
- 1 995
- Bibliographic source:
- Journal of Geophysical research. Vol.100:18781-18801
Materials and methods
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Carbonyl difluoride
- EC Number:
- 206-534-2
- EC Name:
- Carbonyl difluoride
- Cas Number:
- 353-50-4
- Molecular formula:
- CF2O
- IUPAC Name:
- carbonyl difluoride
- Test material form:
- gas
Constituent 1
Results and discussion
Dissipation half-life of parent compound
- DT50:
- 3.9 d
- Remarks on result:
- other: estimation of hydrolysis in the clouds using Henry's law constant = 20 M.atm-1 and unimolecular hydrolysis rate k(H)= 8 sec-1 from George et al., 1993.
- Remarks:
- 'Heterogeneous removal process)
Applicant's summary and conclusion
- Conclusions:
- The atmospheric lifetime of COF2 in cloud loss is reported to be 3.9 days. It is not expected to build up in the atmosphere.
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