Registration Dossier

Administrative data

Endpoint:
other distribution data
Type of information:
migrated information: read-across based on grouping of substances (category approach)
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Assessment performed according to accepted models and principles.

Data source

Reference
Reference Type:
secondary source
Title:
Annex VI. Environmental Distribution Modelling.
Year:
2005
Bibliographic source:
In: Annex VI to the Long Chain Aliphatic Alcohols Category SIAR.

Materials and methods

Principles of method if other than guideline:
Method: other: Mackay Level I and Level III models

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Any other information on results incl. tables

INPUT DATA USED:
Molecular weight 228.4
Data temperature 25 deg C
Log Kow 6.43
Water Solubility 0.102 mg/l
Vapour pressure 0.00512 Pa
Melting point 45 deg C
half life in air 17.2 h
half life in water and soil 720 h
RESULTS
The % environmental distribution calculated from the above parameters using the MacKay level 1 model is as follows:
Air         0.10%
Soil        97.6%
Water       0.04%
Fish    5.51E-03%
Sediment    2.17%

The Level III program has also been used, with the default model, using the same input parameters.The distribution between compartments 

obtained is as follows:

Release:       To air   To water   To soil
% in air       21.1      0.00128   1.12E-05
% in water      1.47     3.32      0.0107
% in sediment  42.7     96.7       0.31
% in soil      34.7      0.00211  99.7

The results reflect that the ultimate fate of 1-pentadecanol is dependent on its route of release into the environment.1-Pentadecanol released to air 

would partially precipitate to soil and water. There is relatively little movement between soil and water, because transfer via the air compartment is 

very slow, for a substance of low volatility.In water, the adsorption coefficient of 1-pentadecanol results in significant adsorption to sediment.

Applicant's summary and conclusion