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Auto flammability

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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.

Key value for chemical safety assessment

Additional information

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

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