1-butyl-5-[(4-chlorophenyl)azo]-1,2-dihydro-6-hydroxy-4-methyl-2-oxonicotinonitrile

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 12 FEBRUARY 2019 to 09 MAY 2019

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.16 (Relative Self-Ignition Temperature for Solids)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Relative self-ignition temperature:

> 180 °C

Remarks on result:

no self-ignition observed up to the melting point

Conclusions:

No increase in the temperature of the sample in comparison to that of the oven could be
detected; also no signs of ignition could be observed.
The test item 1-butyl-5-[(4-chlorophenyl)azo]-1,2-dihydro-6-hydroxy-4-methyl-2-
oxonicotinonitrile is considered as showing no self-ignition up to the melting point of 180 °C under the test conditions.
No observations were made which might cause doubts concerning the validity of the study
outcome.

Description of key information

According to EU-Method A.16.

The auto-flammability behaviour was determined by placing the test item into a stainless steel cube and heating from room temperature to an oven temperature of 185 °C with the ZPA-3 oven.
No increase in the temperature of the sample in comparison to that of the oven could be detected, also no signs of ignition could be observed.
Therefore, the test item 1-butyl-5-[(4-chlorophenyl)azo]-1,2-dihydro-6-hydroxy-4-methyl-2-oxonicotinonitrile should be considered as “showing no self-ignition up to the melting point of 180 °C” under the test conditions.

Additional information

No self-ignition up to the melting point of 180 °C