3,5-bis(difluoromethyl)-1H-pyrazole

Melting point / freezing point

Administrative data

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

17-Aug to 23-Aug-2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Cross-reference

Cross-reference 1

Reason / purpose for cross-reference:

reference to same study

Reference

Endpoint:

appearance / physical state / colour

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Remarks:

The appearance of the test item is described in a reliable study report on the physical-chemical properties of the substance. Since no guideline was followed and no details on the methods are given, the description is considered as reliable with restrictions.

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to same study

Principles of method if other than guideline:

Visual inspection

GLP compliance:

no

Physical state at 20°C and 1013 hPa:

solid

Key result

Form:

solid

Colour:

amber

Substance type:

organic

Conclusions:

The substance is an amber solid.

Cross-reference 2

Reason / purpose for cross-reference:

reference to same study

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

17-Aug to 26-Aug-2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

reference to same study

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

GLP compliance:

yes (incl. QA statement)

Remarks:

Hess. Ministerium fur Umwelt, ländlichen Raum und Verbraucherschutz, Wiesbaden, Germany

Type of method:

differential scanning calorimetry

Key result

Boiling pt.:

ca. 207.4 °C

Atm. press.:

1 013 hPa

Conclusions:

The mean boiling point of the test item was determined to be 207.4 °C at 1013 hPa according to the Guideline OECD 103.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Report date:

2017

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

GLP compliance:

yes (incl. QA statement)

Remarks:

Hess. Ministerium fur Umwelt, ländlichen Raum und Verbraucherschutz, Wiesbaden, Germany

Type of method:

differential scanning calorimetry

Test material

Test material information

1

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

Melting / freezing point

Key result

Melting / freezing pt.:

> 65 - < 68 °C

Atm. press.:

ca. 1 013 hPa

Remarks on result:

other: Pressure assumed to be ca. 1013 hPa

Applicant's summary and conclusion

Conclusions:

The melting point of the test item was determined to be 65 - 68 °C according to the Guideline OECD 102.