Registration Dossier
Registration Dossier
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EC number: 200-893-9 | CAS number: 75-71-8
Distribution modelling
Administrative data
- Endpoint:
- distribution modelling
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- key study
- Study period:
- January 2021
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- accepted calculation method
- Justification for type of information:
- calculation according to Mackay, Level III
Data source
Reference
- Reference Type:
- other: estimation software
- Title:
- Estimation Programs Interface Suite for Microsoft Windows, v4.11
- Author:
- US EPA
- Year:
- 2 012
- Bibliographic source:
- United States Environmental Protection Agency, Washington DC, USA
Materials and methods
- Model:
- calculation according to Mackay, Level III
- Calculation programme:
- MacKay Level III fugacity modelling EPIWEB v4.1
- Media:
- other: Air only as no release to water and soil are expected
Test material
- Reference substance name:
- Dichlorodifluoromethane
- EC Number:
- 200-893-9
- EC Name:
- Dichlorodifluoromethane
- Cas Number:
- 75-71-8
- Molecular formula:
- CCl2F2
- IUPAC Name:
- dichlorodifluoromethane
- Details on test material:
- As above
Constituent 1
- Specific details on test material used for the study:
- SMILES notation: FC(F)(Cl)Cl
Study design
- Test substance input data:
- - Molar mass: 120.91
- Water solubility: 280 mg/l
- Vapour pressure: 4840 mm Hg (Mpbpwin program)
- Henry's LC: 0.343 atm.m3/mole (Henry database)
- log Pow: 2.16 (Kowwin program)
- Soil Koc: 43.9 (KOCWIN MCI method)
Input PC parameters were all default value of EpiSuite - fugacity model (Level III)
Emission value mode: The environmental emission rates are 1000 kg/hr to air only in the absence of process-related releases to water or soil.
Results and discussion
Percent distribution in media
- Air (%):
- 100
- Water (%):
- 0.008
- Soil (%):
- 0.005
- Sediment (%):
- 0
Applicant's summary and conclusion
- Conclusions:
- The potential environmental distribution of CFC-12 was estimated using an accepted fugacity model (Mackay Level III).
As water and soil emissions are not expected during use, the modelling was conducted considering only potential emissions to air as input. The model predicts the substance will preferentially partition to air (100%).
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