Registration Dossier

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: Widely used fugacity model, adequate for assessment.

Data source

Referenceopen allclose all

Reference Type:
other: model
Title:
Fugacity-based Multimedia Environmental Model Level III
Author:
CEMC
Year:
2002
Bibliographic source:
Fugacity-based Multimedia Environmental Model Level III (Canadian Environmental Modelling Centre - Trent University, Peterborough, Ontario, Canada)
Reference Type:
publication
Title:
Evaluating the environmental fate of types of chemicals using the EQC model.
Author:
Mackay D,Paterson S,Di Guardo A, Cowan CE
Year:
1996
Bibliographic source:
Environ. Toxicol. Chem. 15:1627-1637.

Materials and methods

Model:
calculation according to Mackay, Level III
Calculation programme:
Fugacity-based Multimedia Environmental Model Level III Version 2.70 (Canadian Environmental Modeling Centre - Trent University, Peterborough, Ontario, Canada)
Release year:
2 002
Media:
other: air-water-soil-sediment

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
gas
Details on test material:
Considered as pure substance.

Results and discussion

Percent distribution in media

Air (%):
100
Water (%):
0
Soil (%):
0
Sediment (%):
0

Any other information on results incl. tables

Results:
             Fugacity         Reaction            Advection            Mass Amount
                (Pa)            losses(%)            losses(%)                  (%)
-----------------------------------------------------------------------------------------------
Air
           1.7x10^-5       6x10^-8               100                       100
Water
      1.2x10^-5       5x10^-13            8x10^-5               8x10^-4
Soil
          1.7x10^-5      2x10^-12                -                       3x10^-3
Sediment
 1.2x10^-5      2x10^-15              5x10^-9             2x10^-6

Residence time (air)
Advection
       100 h
Reaction
        1x10^11 h
Total
               100 h The Level III model’s results indicated that SF6 would partition mainly into the air compartment (~100%) and about 0.001% and 0.003% in water and soil compartment, respectively. The estimated residence time of SF6 in the considered EQC (EQuilibrium Criterion) standard environment is 100 hrs. Advection is the main process of loss of SF6 from the considered EQC-standard environment.

Applicant's summary and conclusion