Registration Dossier
Registration Dossier
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EC number: 203-561-1 | CAS number: 108-21-4
Distribution modelling
Administrative data
- Endpoint:
- distribution modelling
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 1996
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Model considered reliable and the main basis for fugacity modelling.
Data source
Referenceopen allclose all
- Reference Type:
- publication
- Title:
- Evaluating the environmental fate of a variety of types of chemicals using the EQC model.
- Author:
- Mackay, D. DiGuardo, A., Paterson, S. and Cowan, C.
- Year:
- 1 996
- Bibliographic source:
- Env. Toxicol. Chem. 15(9):1627-1637.
- Reference Type:
- secondary source
- Title:
- No information
- Author:
- Trent University
- Year:
- 2 009
- Bibliographic source:
- http://www.trentu.ca/academic/aminss/envmodel/EQCD.html
- Reference Type:
- publication
- Title:
- Multimedia Environmental models, the fugacity approach-second edition
- Author:
- Mackay D
- Year:
- 2 001
- Bibliographic source:
- Lewis, Boca Raton
Materials and methods
- Model:
- calculation according to Mackay, Level III
- Calculation programme:
- Mackay fugacity model III version 2.80.1
- Release year:
- 2 004
- Media:
- air - biota - sediment(s) - soil - water
Test material
- Reference substance name:
- Isopropyl acetate
- EC Number:
- 203-561-1
- EC Name:
- Isopropyl acetate
- Cas Number:
- 108-21-4
- Molecular formula:
- C5H10O2
- IUPAC Name:
- isopropyl acetate
- Details on test material:
- not applicable.
Constituent 1
Study design
- Test substance input data:
- All physichemical data as per section 4.
- Reaction half-life estimates (all from EPIWEB 4)
- Air: 75hr
- Water: 360 hr
- Soil: 720hr
- Sediment: 3240hr - Environmental properties:
- EU TGD defaults for compartment sizes.
Results and discussion
Percent distribution in media
- Air (%):
- 23.2
- Water (%):
- 35.9
- Soil (%):
- 40.7
- Sediment (%):
- 0.31
- Susp. sediment (%):
- 0
- Biota (%):
- 0
- Aerosol (%):
- 0
Any other information on results incl. tables
Results above are for first scenario shown below.
Results shown below are for emissions of ~10,000tpa with different potential emission patterns for comparison.
Emission to air (kg/hr) |
333 |
1000 |
0 |
0 |
Emission to water (kg/hr) |
333 |
0 |
1000 |
0 |
Emission to soil (kg/hr |
333 |
0 |
0 |
1000 |
Air concentration (ug/m3) |
.62 |
.73 |
0.53 |
0.60 |
Water concentration (ug/l) |
10.6 |
0.09 |
26.6 |
5.3 |
Sediment concentration (ug/kg) |
2.2 |
0.02 |
5.4 |
1.1 |
Soil concentration (ug/kg) |
2.9 |
0.03 |
0.03 |
8.7 |
From this it can be concluded that air concentrations are effectively independent of emission compartment, emissions to the water compartment remain in the same compartment (with some partitioning to sediment) whilst emissions to soil partition to all three compartments.
Applicant's summary and conclusion
- Conclusions:
- Environmental background levels of ethyl acetate at regional and continental levels from emissions of ethanol during use are not likely to be of concern.
- Executive summary:
Level III fugacity calculations based on realistic emissions quantities predict that environmental levels of ethyl acetate will be very low (<25ug/l in water, <1.5ug/kg in soil, <2.5ug/kg in sediment and <3.5ug/m3 in air.)
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