1-(2-bromo-4-chloro-phenyl)-4-(trifluoromethyl)triazole

Melting point / freezing point

Administrative data

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

24 Jan - 31 Jan 2022

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2022

Report date:

2022

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

thermal analysis

Remarks:

differential scanning calorimetry

Test material

Test material information

Constituent 1

Reference substance name:

1-(2-bromo-4-chlorophenyl)-4-(trifluoromethyl)-1H-1,2,3-triazole

EC Number:

863-757-3

Cas Number:

1445866-55-6

Molecular formula:

C9H4BrClF3N3

IUPAC Name:

1-(2-bromo-4-chlorophenyl)-4-(trifluoromethyl)-1H-1,2,3-triazole

Results and discussion

Melting / freezing point

Key result

Melting / freezing pt.:

67.3 °C

Atm. press.:

1 024 hPa

Any other information on results incl. tables

DSC-measurements

During the heating phase a distinct endothermic effect was observed in the temperature range of 60 – 80 °C, which can be assigned to the melting of the test item. As the onset temperatures in both tests do not deviate by more than 0.5 K from their mean value of 67.33 °C, this temperature can be used as melting point. The test item has a melting point of 67.3 °C. The test item showed a second endothermic signal in the temperature range of 260 – 340 °C, which could not be clearly assigned to the boiling of the test item. Thus, the photo cell detection method was performed. In the capillary, the first large bubble rises at 265 °C. At the same time, the test item changes colour from a clear, orange liquid to a dark brown liquid. It is concluded that the test item decomposes simultaneously with the start of boiling. Based on visual observation in the BÜCHI Apparatus it is stated that the test item has no boiling point but starts to decompose at a temperature of 260 °C. No further thermal effects were observed up to the test end temperature of 500 °C.

Results of the DSC-measurements:

Measurement No.	Sample weight [mg]	Onset Effect [°C]	Range of effect [°C]	Weight loss [mg]	Atmospheric pressure [hPa]
1	8.47	67.45 302.84	60 - 80 (endo) 260 -340 (endo)	8.41	1024.2
2	9.08	67.20 307.08	60 - 80 (endo) 260 -340 (endo)	9.03	1023.2

Applicant's summary and conclusion

Conclusions:

The test item has a melting point of 67.3 °C at atmospheric pressure (1023 - 1024 hPa).

Executive summary:

Test Design:The determination of the melting of the test item was performed using Differential Scanning Calorimetry (DSC).

Result: The test item has a melting point of 67.3 °C at atmospheric pressure (1023 - 1024 hPa).