Alcohols, C9-11-branched

Distribution modelling

Administrative data

Endpoint:

distribution modelling

Type of information:

calculation (if not (Q)SAR)

Adequacy of study:

key study

Study period:

2005

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

accepted calculation method

Data source

Reference

Reference 1

Reference Type:

publication

Title:

Unnamed

Year:

1996

Reference 2

Reference Type:

other: Mathematical model

Title:

Unnamed

Year:

2003

Materials and methods

Model:

calculation according to Mackay, Level III

Calculation programme:

Level III simulation using the Mackay Multimedia Environmental Model, version 2.80, released 2004, available at the Canadian Environmental Modelling Centre, Trent University, Canada.

Release year:

2 003

Media:

air - biota - sediment(s) - soil - water

Test material

Test material information

Constituent 1

Reference substance name:

Alcohols, C9-C11-branched

IUPAC Name:

Alcohols, C9-C11-branched

Study design

Test substance input data:

MW = 172.31
Temperature = 25C
Water Solubility = 28.1 mg/L
Vapor Pressure = 1.14 Pa
Pow = 4.2
Melting Point = -72C

Results and discussion

Percent distribution in media

Air (%):

2.5

Water (%):

26.8

Soil (%):

70.5

Sediment (%):

0.2

Any other information on results incl. tables

The potential environmental distribution of isoundecanol in 4 environmental compartments as calculated using a fugacity model, the Mackay Level III, under the default emission scenario (1000 kg/h into each of air water and soil compartments) with half-life data set (see above) is shown below:

Relative distribution when released (see half-life values above):
Air           2.5%
Soil          70.5%
Water        26.8%
Sediment     0.2%

Applicant's summary and conclusion

Conclusions:

The Mackay Level III equilibrium model estimates that Alcohols, C9-C11, branched will partition largely to the soil compartment (approximately 70%), followed by the water (approximately 27%) and minimally to the air and sediment compartments (2.5 and 0.2%, respectively), based on all available measured data.

Executive summary:

The Mackay Level III equilibrium model estimates that Alcohols, C9-C11, branched will partition largely to the soil compartment (approximately 70%), followed by the water (approximately 27%) and minimally to the air and sediment compartments (2.5 and 0.2%, respectively), based on all available measured data.