Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
04-Oct to 05-Oct-2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report date:
2017

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
GLP compliance:
yes (incl. QA statement)
Remarks:
Hess. Ministerium fur Umwelt, ländlichen Raum und Verbraucherschutz, Wiesbaden, Germany
Type of method:
effusion method: Knudsen cell

Test material

1
Chemical structure
Reference substance name:
3,5-bis(difluoromethyl)-1H-pyrazole
EC Number:
814-072-3
Cas Number:
77614-79-0
Molecular formula:
C5H4F4N2
IUPAC Name:
3,5-bis(difluoromethyl)-1H-pyrazole
Test material form:
solid

Results and discussion

Vapour pressureopen allclose all
Temp.:
20 °C
Vapour pressure:
0.78 Pa
Temp.:
25 °C
Vapour pressure:
1.2 Pa
Temp.:
50 °C
Vapour pressure:
8.5 Pa

Applicant's summary and conclusion

Conclusions:
The vapour pressure of the test item was determined to be 0.78 Pa at 20 °C, 1.2 Pa at 25 °C and.8.5 Pa at 50 °C according to the Guideline OECD 104.