Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Vapour pressure

Currently viewing:

Administrative data

Link to relevant study record(s)

Referenceopen allclose all

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Principles of method if other than guideline:
static method with an improved apparatus design described in detail
Type of method:
other: static method with an improved apparatus design described in detail
Key result
Temp.:
25 °C
Vapour pressure:
0.003 Torr
Remarks on result:
other: extrapolated to 25 oC as worst case
Remarks:
0.003 torr = 0.4 Pa
Remarks on result:
other: log P = 31.85686 - (4711.1/T) - (7.48624*logT)
Remarks:
measured from mp to bp

log P = 31.85686 - (4711.1/T) - (7.48624*logT); measured from mp to bp

Conclusions:
vp curve developed based on data measured from mp to bp; log P = 31.85686 - 4711.1/T) - (7.48624*logT); extrapolation to 25 oC give 0.003 torr (0.4 Pa). This is close to ACD calculated 0.2 Pa, therefore 0.4 Pa shall be used as worst case vp @ 25 oC
Executive summary:

vp curve developed based on data measured from mp to bp; log P = 31.85686 - 4711.1/T) - (7.48624*logT); extrapolation to 25 oC give 0.003 torr (0.4 Pa).  This is close to ACD calculated 0.2 Pa, therefore 0.4 Pa shall be used as worst case vp @ 25 oC

Endpoint:
vapour pressure
Type of information:
calculation (if not (Q)SAR)
Remarks:
calculated vp is close to worst case experimental value
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
Principles of method if other than guideline:
calculation
Type of method:
other: calculation
Temp.:
25 °C
Vapour pressure:
0.2 Pa
Conclusions:
calculated vp (0.2 Pa @ 25 oC) is close to worst case experimental value (0.4 Pa @ 25 oC)
Executive summary:

calculated vp (0.2 Pa @ 25 oC) is close to worst case experimental value (0.4 Pa @ 25 oC)

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment
Remarks:
limited or no method information, reported values are close to worst case study results
Principles of method if other than guideline:
publication has limited or no method information
Type of method:
other: publication has limited or no method information
Temp.:
141.5 °C
Vapour pressure:
10 Torr
Temp.:
282.5 °C
Vapour pressure:
760 Torr
Conclusions:
10-760 torr @ 141.5-282.5 oC, reported values are close to worst case study results
Executive summary:

10-760 torr @ 141.5-282.5 oC, reported values are close to worst case study results

Description of key information

vp curve developed based on data measured from mp to bp; log P = 31.85686 - 4711.1/T) - (7.48624*logT); extrapolation to 25 oC give 0.003 torr (0.4 Pa).  This is close to ACD calculated 0.2 Pa, and 0.4 Pa shall be used as worst case vp @ 25 oC

Key value for chemical safety assessment

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

Additional information