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Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
12 Jan 2017 to 13 Feb 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
March 2006
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Version / remarks:
December 1992
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7950 (Vapor Pressure)
Version / remarks:
August 1996
GLP compliance:
yes
Type of method:
gas saturation method
Key result
Test no.:
#1
Temp.:
25.1 °C
Vapour pressure:
< 0 Pa
Test no.:
#2
Temp.:
25.1 °C
Vapour pressure:
< 0 Pa
Test no.:
#3
Temp.:
25.1 °C
Vapour pressure:
< 0 Pa

RESULTS

The vapour pressure of the test substance at 25 °C is lower than the 1E-5 Pa limit; therefore the vapour pressure curve was not determined. No test substance was detected in the condensation tubes indicating that the vapour pressure must be very low. To determine the upper limit for the vapour pressure the lowest check calibration concentration was used. This corresponded to an absolute amount of 0.390 µg the test substance (i.e. 0.195 µg/mL x 2.0 mL). Substituting this value of 0.390 µg into the equation quoted above permits the determination of an upper limit for the vapour pressure. Since no test substance peak was found then the vapour pressure of the test substance must be < 6.2E-6 Pa at 25 °C. Therefore, the vapour pressure of the test substance must be < 6.2E-6 Pa at 20 °C.  

Conclusions:
The test substance has a vapour pressure of < 6.2E-6 Pa at 25 °C and 6.2E-6 Pa at 20 °C.
Executive summary:

The vapour pressure of the test substance was determined by the gas saturation method in accordance with the OECD TG 104 and EC method A.4 and in compliance with GLP. The vapour pressure of the test substance was determined at < 6.2E-6 Pa at 25 °C and  6.2E-6 Pa at 20 °C.

Description of key information

Vapour pressure < 6.2E-6 Pa at 25 °C, OECD 104, GC saturation method, Vijayakumar 2017.

Key value for chemical safety assessment

Vapour pressure:
0 Pa
at the temperature of:
25 °C

Additional information