3-(difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylic acid

Auto flammability

Administrative data

Endpoint:

relative self-ignition temperature (solids)

Data waiving:

study waived due to provisions of other regulation

Justification for data waiving:

other:

Cross-reference

Reason / purpose for cross-reference:

reference to other study

Reference

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

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

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)

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.