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Physical & Chemical properties

Vapour pressure

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Administrative data

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other: GLP compliant, guideline study, available as unpublished report, no restrictions, fully adequate for assessment
Cross-reference
Reason / purpose for cross-reference:
reference to same study

Data source

Referenceopen allclose all

Reference Type:
study report
Title:
Unnamed
Year:
1995
Report date:
1995
Reference Type:
study report
Title:
Unnamed
Year:
1995
Report date:
1995
Reference Type:
other: amendment
Title:
Unnamed
Year:
1996
Report date:
1996

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
GLP compliance:
yes
Type of method:
dynamic method
Remarks:
under argon

Test material

Constituent 1
Chemical structure
Reference substance name:
1,4-Dimethyl-1H-pyrazole
EC Number:
600-813-6
Cas Number:
1072-68-0
Molecular formula:
C5H8N2
IUPAC Name:
1,4-Dimethyl-1H-pyrazole
Details on test material:
- Name of test material (as cited in study report):1,4-Dimethylpyrazol
- Storage condition of test material: room temperature, avoid moist and acid.
- Purity: 99.7%

Results and discussion

Vapour pressureopen allclose all
Temp.:
20 °C
Vapour pressure:
3.47 hPa
Temp.:
50 °C
Vapour pressure:
21.3 hPa

Any other information on results incl. tables

Regression formula:

ln(Pa) = 21.4506 - 3553.32 / (207.75 + t(°C))

average deviation of 0.14%

Applicant's summary and conclusion

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