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

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 11 DECEMBER 2018 to 14 DECEMBER 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.17 (Oxidising Properties (Solids))

Deviations:

yes

Remarks:

The test item didn't pass the 125 µm sieve. So, the test item was dried by a heating chamber and grounded twice. But it wasn't possible. This can be considered as uncritical as the test item was used as given.

GLP compliance:

yes (incl. QA statement)

Contact with:

powdered cellulose

Duration of test (contact time):

>= 62.84 - <= 84.15 s

Key result

Sample tested:

test mixture as specified

Parameter:

burning rate

Result:

>= 2.37 - <= 3.26 mm/s

Remarks on result:

slow smouldering

In all tests with the test item, no signs of oxidising properties were observed and no burning rate surpasses the burning rate of the reference item/cellulose mixtures. Therefore the
test item is considered to have no oxidising properties.
No observations were made which might cause doubts concerning the validity of the study
outcome.

Interpretation of results:

GHS criteria not met

Conclusions:

In all tests with the test item, no signs of oxidising properties were observed and no burning rate surpasses the burning rate of the reference item/cellulose mixtures. Therefore the
test item is considered to have no oxidising properties.
No observations were made which might cause doubts concerning the validity of the study
outcome.

Description of key information

According to EU A.17

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Additional information

In all tests with the test item, no signs of oxidising properties were observed and no burning rate surpasses the burning rate of the reference item/cellulose mixtures. Therefore the test item is considered to have no oxidising properties.
No observations were made which might cause doubts concerning the validity of the study outcome.

Justification for classification or non-classification

In the pre-test, the mixture of cellulose and test item burned with orange sooting flame.
The mixture carbonized.
The maximum burning rate of mixtures of a reference item (Ba(NO3)2) was determined. Likewise, the burning rates of mixtures of the test item with cellulose (in different proportions) were determined. The burning rates of the three mixtures with the highest burning rate were determined six times.
The average burning rate undercut the maximum burning rate of the mixture of reference item and cellulose.
The test item 1-butyl-5-[(4-chlorophenyl)azo]-1,2-dihydro-6-hydroxy-4-methyl-2-
oxonicotinonitrile is considered to have no oxidising properties.