1H-Pyrazole, 1,4-dimethyl-

Vapour pressure

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other: GLP compliant, guideline study, available as unpublished report, no restrictions, fully adequate for assessment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

Reference

Reference 1

Reference Type:

study report

Title:

Unnamed

Year:

1995

Report date:

1995

Reference 2

Reference Type:

study report

Title:

Unnamed

Year:

1995

Report date:

1995

Reference 3

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

Test material information

Constituent 1

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 pressure

Vapour pressure 1

Temp.:

20 °C

Vapour pressure:

3.47 hPa

Vapour pressure 2

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%