Registration Dossier
Registration Dossier
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EC number: 206-557-8 | CAS number: 354-33-6
Adsorption / desorption
Administrative data
- Endpoint:
- adsorption / desorption
- Remarks:
- other: Koc estimation
- 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: Accepted calculation method
Data source
Referenceopen allclose all
- Title:
- Technical Guidance Document on Risk Assessment
- Author:
- EU Commission
- Year:
- 2 003
- Reference Type:
- publication
- Title:
- No information
- Reference Type:
- publication
- Title:
- QSARs for soil sorption. In: Overview of Structure-Activity Relationships for Environmental Endpoints
- Author:
- Sabljic A and Güsten H
- Year:
- 1 995
- Bibliographic source:
- Hermens JLM (ed.), Report prepared within the framework of the project “QSAR for Prediction of Fate and Effects of Chemicals in the Environment" (EU Commission project DG XII/D-1)
Materials and methods
- Principles of method if other than guideline:
- Koc estimated via an accepted QSAR method
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
Results and discussion
Partition coefficients
- Phase system:
- other: Koc
- Type:
- other: Koc
- Value:
- 20 L/kg
Any other information on results incl. tables
The organic carbon-normalised partition coefficient was estimated by considering the equation for the domain of predominantly-hydrophobic substances reported in the EU TGD (2003) and the experimentally determined Log Kow (1.48). HFC 125 satisfies the criteria to be included in the selected domain (predominantly hydrophobics, domain criteria: Log Kow in the range 1 -7.5 and molecules containing C, H, F, Cl, Br, and I atoms) :
Log Koc = 0.81 LogKow + 0.10 = 0.81 * 1.48 + 0.10 = 1.30
Koc = 20 L/kg
Applicant's summary and conclusion
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