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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
other distribution data
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
2005
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Assessment performed according to accepted models and

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2005

Materials and methods

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

Test material

Constituent 1
Chemical structure
Reference substance name:
(Z)-octadec-9-enol
EC Number:
205-597-3
EC Name:
(Z)-octadec-9-enol
Cas Number:
143-28-2
Molecular formula:
C18H36O
IUPAC Name:
(9Z)-octadec-9-en-1-ol

Results and discussion

Any other information on results incl. tables

INPUT DATA USED:
Molecular weight 268.5
Data temperature 25 deg C
Log Kow 7.07
Water Solubility 0.0077 mg/l
Vapour pressure 0.00198 Pa
Melting point 17 deg C
half life in air 4.8 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         0.13%
Soil        97.6%
Water   9.38E-03%
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        8.01     0.000579  9.86E-06
% in water      1.17     2.65      0.0105
% in sediment  42.9     97.3       0.383
% in soil      47.9      0.00347  99.6

The results reflect that the ultimate fate of 9Z-octadecen-1-ol is  dependent on its route of release into the environment.   9Z-octadecen-1-ol 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 9Z-octadecen-1-ol  results in significant adsorption to sediment.

Applicant's summary and conclusion