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Environmental fate & pathways

Distribution modelling

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Administrative data

Endpoint:
distribution modelling
Type of information:
calculation (if not (Q)SAR)
Remarks:
Migrated phrase: estimated by calculation
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: generally accepted calculation method

Data source

Reference
Reference Type:
other: unpublished calculation
Title:
Calculation of the environmental distribution of alpha-methylstyrene according to the fugacity model Mackay level I v. 3.00.
Author:
Fh-ITEM (2005)
Year:
2005
Bibliographic source:
Fraunhofer-Institut Toxikologie und Experimentelle Medizin (Hannover, Germany).

Materials and methods

Model:
calculation according to Mackay, Level I
Calculation programme:
Level I Model v3.00 (September 2004)
Release year:
2 004
Media:
air - biota - sediment(s) - soil - water

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Test substance input data:
- Molar mass: 118.18 g/mol
- Data temperature: 25°C
- Water solubility: 116 mg/L (116 g/m³)
- Vapour pressure: 253 Pa
- log Pow: 3.48
- Melting point: -23.2°C
Environmental properties:
Environmental parameters

Volume (m³) Density (kg/m³) Organic Carbon (g/G) Fish Lipid (g/g)
Air 6 x 10E9 1.19 - -
Water 7 x 10E6 1000 - -
Suspended 35 1500 0.04 -
particles
Fish 7 1000 - 0.048
Soil 45000 1500 0.02 -
Sediment 21000 1500 0.04 -

Results and discussion

Percent distribution in media

Air (%):
98.4
Water (%):
1.1
Soil (%):
0.26
Sediment (%):
0.25
Susp. sediment (%):
0
Biota (%):
0
Aerosol (%):
0

Any other information on results incl. tables

The environmental distribution of alpha-methylstyrene was calculated using the fugacity model Mackay Level I v3.00. The main target compartment of the distribution is air (98.4%) followed by water (1.1%). All other compartments are negligible.

Applicant's summary and conclusion

Conclusions:
The environmental distribution of alpha-methylstyrene was calculated using the fugacity model Mackay Level I v3.00. The main target compartment of the distribution is air (98.4%) followed by water (1.1%).
Executive summary:

The environmental distribution of alpha-methylstyrene was calculated using the fugacity model Mackay Level I v3.00. The main target compartment of the distribution is air (98.4%) followed by water (1.1%). All other compartments are negligible.