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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:
12/06/2017 - 13/06/2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
GLP compliance:
no
Type of method:
effusion method: vapour pressure balance
Temp.:
20 °C
Vapour pressure:
< 0 hPa
Temp.:
25 °C
Vapour pressure:
< 0 hPa
Temp.:
50 °C
Vapour pressure:
< 0.001 hPa

The vapour pressure was measured in the temperature range of 50 °C to 100 °C.

Since the mesured vapour pressures showed an unusual behaviour, the values for 20, 25 and 50 °C

were estimated using the Antoine equation. This leads to a conservative estimation of the vapour pressure of the test item for the listed temperatures. In order to further ensure a conservative approach the vapour pressures were rounded up to the next order of magnitude in order to obtain final upper limit values for the vapour pressure.

Conclusions:
Based on the measured vapour pressure at 50 °C (vapour pressure balance), the following upperlimit vapour pressure values for the test item were calculated:T / °C p / hPa 20 < 1 × 10-4 25 < 1 × 10-4 50 < 1 × 10-3

Description of key information

Key value for chemical safety assessment

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

Additional information