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Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
key study
Study period:
2003-07-15
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study performed according to the OECD 104 guideline and EC method A.4 Vapour Pressure. The calculated range is lower than the value range 10 exp 5 Pa to 10 exp -5 Pa advised in the guideline.
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
Principles of method if other than guideline:
If the vapour pressure is expected to be very small, than the value will be below the measurement range of an experimental method (e.g. the gas saturation method), then the vapour pressure can also be calculated, using the Modified Watson Correlation. To calculate the vapour pressure the boiling point is needed, which was calculated with the Meissner method.
GLP compliance:
no
Type of method:
other: Calculation method
Key result
Temp.:
25 °C
Vapour pressure:
0 Pa
Remarks on result:
other: The boiling point of the substance T002615 was calculated to be approximately 459 deg C using the Meissner's method. Vapour pressure was estimated with the Watson correlation.
Conclusions:
The estimated vapour pressure is 4.72E-10 Pa at 25 deg C based on a boiling point calculated value.

Description of key information

The vapour pressure was estimated with the Watson correlation in a Klimisch 2 GLP study according to OECD 104 guideline and EC method A.4 Vapour Pressure. The estimated vapour pressure of T002615 was 4.72E-10 Pa at 25°C based on a boiling point calculated value (ca. 459°C using the Meissner's method).

Key value for chemical safety assessment

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

Additional information

The calculated range was lower than the value range 10^5 Pa to 10^-5 Pa advised in the guideline. Therefore, the study was assigned as Klimisch 2 study.