Registration Dossier
Registration Dossier
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EC number: 206-557-8 | CAS number: 354-33-6
Distribution modelling
Administrative data
- Endpoint:
- distribution modelling
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- Migrated phrase: estimated by calculation
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Recognised modelling method.
Data source
Referenceopen allclose all
- Reference Type:
- publication
- Title:
- Multimedia Fugacity Modelling : the Fugacity Approach - 2nd Edition
- Author:
- MacKay, D
- Year:
- 2 001
- Bibliographic source:
- Lewis Publishers, Boca Raton, pp 1-261, USA
- Reference Type:
- publication
- Title:
- EQC model v. 1.01. Based on Mackay, D; Di Guardo, A; Paterson, S and Cowan, CE (1996). Evaluating the Environmental Fate of a Variety of Types of Chemicals using the EQC Model
- Author:
- MacKay, D; Di Guardo, A; Paterson, S and Cowan, CE
- Year:
- 1 997
- Bibliographic source:
- Environ. Toxicol. Chem. 15, 1627-1637
- Reference Type:
- publication
- Title:
- Fugacity modelling for ETBE, unpublished report, 14 October 2003
- Author:
- Wildey, RJ
- Year:
- 2 003
Materials and methods
- Model:
- calculation according to Mackay, Level III
- Calculation programme:
- Level III, v2.70
- Release year:
- 1 991
- Media:
- other: air-soil-water-biota-sediment-aerosols
Test material
- Reference substance name:
- Pentafluoroethane
- EC Number:
- 206-557-8
- EC Name:
- Pentafluoroethane
- Cas Number:
- 354-33-6
- Molecular formula:
- C2HF5
- IUPAC Name:
- 1,1,1,2,2-pentafluoroethane
Constituent 1
Study design
- Test substance input data:
- - Molar mass: 120.05 g/mol
- Data temperature: 25°C
- Water solubility: 430 mg/l
- Vapour pressure: 1375.8 kPa
- log Pow: 1.48
- Melting point: -103°C
- Reaction half-life estimates for
- Air: 8023 days*
- Water: 4.17E+09 days (negligible)
- Soil: 4.17E+09 days (negligible)
- Sediment: 4.17E+09 days (negligible)
- Suspended sediment: 4.17E+09 days (negligible)
- Aerosols: 4.17E+09 days (negligible)
- Aquatic biota: 4.17E+09 days (negligible)
* Atmospheric half life was calculated by considering the OH radicals-mediated photolysis constant of 2E-15 cm3/molecule/s (JPL 2003) and the default OH concentration of 5E+5 molecules/cm3 to derive a pseudo-first order constant of 1E-09/s. The half life was estimated by the equation:
t1/2=Ln2/k = 0.69/1E-09 = 693147180 s = 8023 days - Environmental properties:
- An Equilibrium Criterion (EQC) standard environment was considered.
An emission rate of 1000 kg/h to the air comparment was considered.
Results and discussion
Percent distribution in media
- Air (%):
- 100
- Water (%):
- 0.001
- Soil (%):
- 0.004
- Sediment (%):
- 0
- Susp. sediment (%):
- 0
- Biota (%):
- 0
- Aerosol (%):
- 0
Applicant's summary and conclusion
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.
