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Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
19 March 2010 – 16 July 2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
effusion method: by loss of weight or by trapping vaporisate
Remarks:
(isothermal thermogravimetry)
Key result
Test no.:
#1
Temp.:
20 °C
Vapour pressure:
< 8.4 other: E-07 Pa

The weight loss of the test substance in the range 170°C - 200°C was lower than the weight loss of chrysene at the same temperature.

Based on this, it was safely concluded that vapour pressure of the test substance is lower than the vapour pressure of this reference substance.

The observed weight loss at a temperature of approximately 100°C (around 100 minutes) was expected due to evaporation of water.

Conclusions:
In a GLP-compliant study in accordance with EC A.4 and OECD 104 using the isothermal thermogravimetric effusion method, the vapour pressure of the substance has been determined as < 8.40 x 10E-7 Pa at 20°C.

Description of key information

In a GLP-compliant study in accordance with EC A.4 and OECD 104 using the isothermal thermogravimetric effusion method, the vapour pressure of the substance has been determined as < 8.40 x 10E-7 Pa at 20°C.

Key value for chemical safety assessment

Vapour pressure:
0 Pa
at the temperature of:
20 °C

Additional information