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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
distribution modelling
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: scientifically acceptable method

Data source

Reference
Reference Type:
other: model calculation report
Title:
Unnamed
Year:
2008

Materials and methods

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

Test material

Constituent 1
Chemical structure
Reference substance name:
2-ethylhexanoic acid
EC Number:
205-743-6
EC Name:
2-ethylhexanoic acid
Cas Number:
149-57-5
Molecular formula:
C8H16O2
IUPAC Name:
2-ethylhexanoic acid

Study design

Test substance input data:
- molecular mass: 144 g/mol
- data temperature: 20 °C
- log Kow: 2.7
- water-solubility: 2000 g/m3
- Henry´s law constant: 0.0288 Pa*m3/mol
- vapour pressure: 0.4 Pa
- melting point: -59
Environmental properties:
Model parameters:

Volume Density org. C fish lipid
[m3] [kg/m3] [g/g] [g/g]
air 6.00E+09 1.185 - -
water 7.00E+06 1000 - -
soil 45000 1500 0.02 -
sediment 21000 1300 0.05 -
susp. sed. 35 1500 0.167 -
fish 7 1000 - 0.05
aerosol 0.12 1500 - -

Results and discussion

Percent distribution in media

Air (%):
0.93
Water (%):
91.7
Soil (%):
3.64
Sediment (%):
3.68
Susp. sediment (%):
0.02
Biota (%):
0
Aerosol (%):
0

Any other information on results incl. tables

Over time, the substance will preferentially distribute into water.

Applicant's summary and conclusion