Registration Dossier
Registration Dossier
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EC number: 642-362-8 | CAS number: 1190630-03-5
Other distribution data
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
Data source
Reference
- Reference Type:
- secondary source
- Title:
- Annex VI. Environmental Distribution Modelling.
- Year:
- 2 005
- 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 substance name:
- Icosan-1-ol
- EC Number:
- 211-119-4
- EC Name:
- Icosan-1-ol
- Cas Number:
- 629-96-9
- Molecular formula:
- C20H42O
- IUPAC Name:
- icosan-1-ol
Constituent 1
Results and discussion
Any other information on results incl. tables
INPUT DATA USED:
Molecular weight: 298.5
Data temperature: 25 deg C
Log Kow: 7.75
Water Solubility: 0.0011 mg/l
Vapour pressure: 0.000015 Pa
Melting point: 66 deg C
half life in air: 13.1 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 1.61E-03%
Soil 97.8%
Water 1.96E-03%
Fish 5.52E-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 0.639 2.52E-05 2.41E-07
% in water 1.22 2.5 0.0111
% in sediment 47.5 97.5 0.433
% in soil 50.6 0.00199 99.6
The results reflect that the ultimate fate of 1-eicosanol is dependent on its route of release into the environment.
1-Eicosanol 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-eicosanol results in significant adsorption to sediment.
Applicant's summary and conclusion
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