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Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP compliant unpublished guideline study, reliable with-out restriction
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Qualifier:
according to guideline
Guideline:
other: OECD 113 (1981) Screening test for thermal stability and stability in air
GLP compliance:
yes (incl. QA statement)
Type of method:
effusion method: vapour pressure balance
Temp.:
50 °C
Vapour pressure:
0 hPa
Remarks on result:
other: Reported as 3.9 x10-5 hPa
Temp.:
60 °C
Vapour pressure:
0 hPa
Remarks on result:
other: Reported as 3.7 x10-5 hPa
Temp.:
70 °C
Vapour pressure:
0 hPa
Remarks on result:
other: Reported as 5.3 x10-5 hPa
Temp.:
80 °C
Vapour pressure:
0 hPa
Remarks on result:
other: Reported as 1.2 x10-4 hPa
Temp.:
90 °C
Vapour pressure:
0 hPa
Remarks on result:
other: Reported as 3.2 x10-4 hPa
Temp.:
100 °C
Vapour pressure:
0.001 hPa
Remarks on result:
other: Reported as 8.7 x10-4 hPa
Temp.:
20 °C
Vapour pressure:
< 0 Pa
Remarks on result:
other: Reported as 4.6 x10-8 Pa
Temp.:
25 °C
Vapour pressure:
< 0 Pa
Remarks on result:
other: Reported as 8.9 x10-8 Pa
Temp.:
50 °C
Vapour pressure:
< 0 Pa
Remarks on result:
other: Reported as 1.8 x10-6 Pa

Thermal stability:

 Weight (mg)  Final temperature (°C)  Type of effect  Temperature Range (°C)  Enthalpy (J/g)  Crucible
 12.42  300  Exothermal  145 - 200  -51  Closed glass crucible
 12.42  300  Exothermal  200 - 245  -82  Closed glass crucible
Conclusions:
The following vapour pressure values were extrapolated from the experimental data (vapour pressure balance method):
20 °C = 4.6 x10-5 Pa
25 °C = 8.2 x10-5 Pa
50 °C = 1.1 x10-3 Pa
Executive summary:

The vapour pressure and thermal stability of Palladium (II) di(4 -oxopent-2 -en-2 -oate) was assessed by the effusion method following the OECD 104 (2006), OECD 113 (1981) and EC No. 440/2008 and No. 761/2009 A.4. Vapour pressure: Vapour pressure balance guidelines.

The following vapour pressure values were extrapolated from the experimental data (vapour pressure method):

20 °C = 4.6 x10 -5 Pa.

25 °C = 8.2 x10 -5 Pa.

50 °C = 1.1 x10 -3 Pa.

The study is a GLP compliant unpublished guideline study and is therefore reliable with-out restriction

Description of key information

The vapour pressure values for palladium (II) di(4-oxopent-2-en-2-oate) have been determined as 4.6 x 10-5 Pa at 20 °C, 8.2 x 10-5 Pa at 25 °C and 1.1 x 10-3 Pa at 50 °C.

Key value for chemical safety assessment

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

Additional information

Nau (2015) is a GLP compliant, guideline study considered suitable for use as the key study for this endpoint. The vapour pressure for Palladium (II) di(4-oxopent-2-en-2-oate) has been extrapolated from the experimental data (vapour pressure balance method) as 4.6 x 10-5 Pa at 20°C, 8.2 x 10 -5 Pa at 25°C and 1.1 x 10 -3 Pa at 50°C.