(Z)-octadec-9-enol

Other distribution data

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

Test material information

Constituent 1

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.