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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Flammability

Currently viewing:

Administrative data

Endpoint:
self-heating substances / mixtures
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2020
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2020
Report date:
2020

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
UN Manual of Tests and Criteria: Test N.4 (Test method for self-heating substances)
GLP compliance:
yes (incl. QA statement)
Remarks:
Hessisches Ministerium für Umwelt, Klimaschutz, Landwirtschaft und Verbraucherschutz

Test material

Constituent 1
Chemical structure
Reference substance name:
3-(difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylic acid
EC Number:
700-093-4
Cas Number:
176969-34-9
Molecular formula:
C6H6F2N2O2
IUPAC Name:
3-(difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylic acid

Results and discussion

Self-heating substances / mixtures
Key result
Test procedure:
100 mm sample cube at 140°C
Max. temp. reached:
140
Induction time (h):
9
Result:
negative outcome (no effect observed)

Any other information on results incl. tables

For the test in the 10 cm cube at an oven temperature of 140 °C ±2 °C an amount of 733.3 g of the test item was filled in the sample container. The test item temperature reached the oven temperature (141 °C) after approximately 9 hours. After at least 24 hours the test was stopped without detecting exothermal effects. The maximum sample temperature was 139 °C.

After the measurement the mesh wire basket contained approximately 2 wt.% less test item than at the start. The remaining test item showed no visual changes.

Due to the negative result at 140 °C (10 cm cube) the test item had not to be classified as "self-heating substance" in the sense of UN Manual of Tests and Criteria, Method N.4., and had not to be classified as "self-heating substance" according to chapter 2.1 Il of the GHS (CLP) regulations.

Applicant's summary and conclusion