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Physical & Chemical properties

Vapour pressure

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Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
29/06/2006-23/09/2006
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2007
Report Date:
2007

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Version / remarks:
European Econornic Community (EEC), EEC directive 92/69 EEC, Part A, Methods for the Determination of Physico-Chemica1 Properties, A.4 "Vapour Pressure", EEC Publication No L383, December 1992
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
Organisation for Econornic Co-operation and Development (OECD), OECD guidelines for Testing chemicals, Draft Updated Guideline No.104: "Vapour Pressure Curve", October 2002
GLP compliance:
yes (incl. certificate)
Type of method:
effusion method: isothermal thermogravimetry

Test material

Reference
Name:
Unnamed
Test material form:
solid: particulate/powder
Details on test material:
- Description: dark purple powder
- Solubility in the water: <= 0.412 g/L
- Melting point: > 250 °C
- Boiling point: > 250 °C
- Explosion: not explosion
- Log Pow: >= 3.3
- Test substance storage: at room temperature in the dark, 20°C, dry store
- Stability under storage conditions: stable
Specific details on test material used for the study:
The test substance was applied to the surface of a roughened glass plate as a homogeneous layer. The plate was wetted uniformly by a solution of the substance in chloroform and dried in an inert atmosphere. For the measurement, the coated plate was hung into the thermogravimetric analyzer. The following method was used:

Results and discussion

Vapour pressureopen allclose all
Key result
Test no.:
#1
Temp.:
20 °C
Vapour pressure:
< 0 Pa
Key result
Test no.:
#1
Temp.:
20 °C
Vapour pressure:
< 0 mm Hg

Any other information on results incl. tables

The test substance was considered to show ideal behaviour. Therefore the evaporation rate curve at elevated temperatures and the vapour pressure curve were derived by using a least squares method to calculate a straight Iine that best fits the measured data (Clapeyron).

The vTt value, determined by extrapolation from the evaporation rate curve, was fitted in the vapour pressure curve to obtain the PT,20 value.

The test temperatures are expressed in degrees Kelvin (K). Temperature in °C = Temperature in Kelvin -273.15.

Applicant's summary and conclusion

Conclusions:
The vapour pressure of SXju12006 at 20°C by isothermal thermogravimetry was determined to be lower than 1.47E-8 Pa or 1.10E-10 mm Hg.