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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(NO
3)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.