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Physical & Chemical properties

Vapour pressure

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Endpoint:
vapour pressure
Data waiving:
study technically not feasible
Justification for data waiving:
other:
Justification for type of information:
The target substance is unstable in water and the atmosphere and testing would record the result of the key degradation products which are relatively volatile, including 2-propanol, ethylene glycol and triisopropanol.
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study
Reference:
Composition 0
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
GLP compliance:
yes
Type of method:
effusion method: vapour pressure balance
Test material information:
Composition 1
Key result
Test no.:
#1
Temp.:
ca. 25 °C
Vapour pressure:
ca. 0 Pa
Key result
Test no.:
#2
Temp.:
ca. 59 °C
Vapour pressure:
ca. 0.003 Pa
Conclusions:
The quoted values were calculated from measurements made in the range 27-99 °C, following some initial degassing.
Some sputtering and condensation was noted at the higher temperature, although the sample appeared to remain unchanged
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Reference:
Composition 0
Qualifier:
according to
Guideline:
other: not specified.
Principles of method if other than guideline:
not specified.
GLP compliance:
not specified
Type of method:
other: not specified.
Test material information:
Composition 1
Key result
Temp.:
ca. 25 °C
Vapour pressure:
ca. 60.2 hPa
Conclusions:
The vapour pressure of 2-propanol is 60.2 hPa at 25°C according to literature.

Description of key information

Examination of similar substances indicates that the vapour pressure for purposes of exposure assessment will be that of degradation products resulting from its instability in the atmosphere.              

Key value for chemical safety assessment

Vapour pressure:
60.2 hPa
at the temperature of:
25 °C

Additional information

Of the key degradation products likely to be volatile, propan-2 -ol has a reported vapour pressure of 60.2 Pa