N-alkylester N-substituted heterocyclic diazo aryl amine

Oxidising properties

Description of key information

The oxidising properties of the test item were determined according to the European Commission Regulations (EC) No. 440/2008,
A.17. Oxidizing properties of solids. The test item had no oxidizing properties in the sense of the European Commission Regulation (EC) No. 440/2008, Method A.17.

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Additional information

The oxidizing properties of the test item was determined according to European Commission Regulation (EC) No. 440/2008, A.17. Oxidizing properties of solids.

In the preliminary test, three test mixtures with the test item and cellulose 2:1 burned down with a flame in 100 s, 90 s and 113 s. After the flame extinguished the cone continued to smoulder for up to 3 min.

Likewise, three test mixtures with barium nitrate/cellulose 2:1 burned down completely in 55 s, 58 s and 60 s.

Due to the results of the preliminary test, the main test had to be performed.

In the main test, four tests were performed for the reference mixture (barium nitrate and cellulose) with 50, 55, 60 and 70 wt. %oxidizer (barium nitrate).

Burning times and rates of reference mixtures

Barium nitrate [wt.%]	Burning time over 200 mm [s]	Burning rate [mm/s]
50	133	1.50
55	119	1.68
60	114	1.75
70	182	1.10

The highest burning rate of 1.75 mm/s was found for the mixture with 60 wt. % oxidizer.

Mixtures of the test item with cellulose were prepared in 10 %-increments between 10 and 90 wt. % of the test item and tested.

Burning times and rates of test item mixtures

Test item[%]	Burning time over 200 mm [s]	Burning rate [mm/s]
10	186	1.08
20	217	0.92
30	229	0.87
40	241	0.83
50	271	0.74
60	246	0.81
70	255	0.78
80	213	0.94
90	Flame extinguished after 42 s and 10 mm	(0.24)
100	The test item could be ignited but extinguished rapidly	---

 

Due to the fact that the maximum burning rate of the mixtures of the test item with cellulose is lower than the maximum burning rate of the reference mixture, six tests were performed only with the three mixtures with the highest burning rates of 10, 20 and 80 wt.% of test item to verify these values.

 

Burning times and rates of the fastest test item mixtures

Test:	t [s]	V [mm/s]	t [s]	V[mm/s]	t [s]	V [mm/s]	t [s]	V [mm/s]	t [s]	V [mm/s]	t [s]	V [mm/s]
10 %	186	1.08	183	1.09	190	1.05	175	1.14	187	1.07	183	1.09
20 %	217	0.92	218	0.92	215	0.93	216	0.93	202	0.99	222	0.90
80 %	213	0.94	236	0.85	227	0.88	214	0.94	229	0.87	238	0.84

 

The maximum burning rate of the mixtures of the test item and cellulose (1.14 mm/s) was lower than the maximum burning rate of the reference mixture of cellulose and barium nitrate (1.75 mm/s).

Due to the fact that the mixture of the test item with cellulose burned slower compared to the reference mixture,it was concluded that the test item has no oxidizing properties.

Justification for classification or non-classification

The test item had no oxidizing properties in the sense of the European Commission Regulation (EC) No. 440/2008, Method A.17.