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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
thermal stability
Type of information:
experimental study
Adequacy of study:
key study
Study period:
07 Sep - 04 Oct 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2016

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 113 (Screening Test for Thermal Stability and Stability in Air)
GLP compliance:
yes (incl. QA statement)
Remarks:
Hess. Ministerium für Umwelt, Energie, Landwirtschaft und Verbraucherschutz, Wiesbaden, Germany

Test material

Constituent 1
Chemical structure
Reference substance name:
3-(difluoromethyl)-5-fluoro-1-methyl-1H-pyrazole-4-carbonyl fluoride
EC Number:
811-684-2
Cas Number:
1255735-07-9
Molecular formula:
C6 H4 F4 N2 O
IUPAC Name:
3-(difluoromethyl)-5-fluoro-1-methyl-1H-pyrazole-4-carbonyl fluoride

Results and discussion

For thermal stability study

Test substance thermally stable:
yes
Operating temperature
Operating temp.:
>= 20 - <= 400 °C

Any other information on results incl. tables

The measurements in a closed glass crucible showed a first exothermal effect in the temperature range of 135 - 160 °C with a maximum energy of 13 J/g and a second exothermal effect in the temperature range of 200 - 310 °C with a maximum energy of 1158 J/g. It was assumed that the exothermal effects were caused by a reaction of the test item with the material of the crucible.

The measurements in a high pressure crucible (material: Nimonic 90) showed two endothermal effects in the temperature range of 140 - 230 °C and 300 - 380 °C No exothermal effects were observed up to the final temperature of 400 °C.

Applicant's summary and conclusion

Conclusions:
The test item is thermally stable according to OECD Guideline 113.