Diethylammonium chloride

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

16 Dec - 22 Dec 2016

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

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

GLP compliance:

no

Specific details on test material used for the study:

Storage conditions: ambient temperature (10 – 30 °C)

Contact with:

powdered cellulose

Sample tested:

test mixture as specified

Remarks:

test item/cellulose 2:1

Parameter:

preliminary test

Remarks on result:

mixture does not ignite and burn

Remarks:

burned for 20 s at ignition point. Flame extinguished without spreading, no complete burning of test mixture seen.

Sample tested:

test mixture as specified

Remarks:

barium nitrate/cellulose 2:1

Parameter:

preliminary test

Remarks on result:

other: 3 test mixtures burned down completely in 67, 65 and 67 s.

Sample tested:

reference mixture as specified

Remarks:

barium nitrate and cellulose with different wt. % oxidizer

Parameter:

maximum burning rate

Result:

1.64 mm/s

Remarks on result:

other: result found for mixture with 60 wt. % oxidizer

Sample tested:

test mixture as specified

Remarks:

cellulose and 10 wt. % test item

Parameter:

maximum burning rate

Result:

1.07 mm/s

Remarks on result:

other: burning time was 187 s

Remarks:

result is lower than maximum burning rate of reference mixture

Results
Preliminary test
The test mixtures with cellulose only burned for 20 s at the ignition point, the flame extinguished without any spreading. No complete burning of the test mixture was seen.

Three test mixtures with barium nitrate/cellulose 2:1 burned down completely in 67, 65 and 67 s, respectively. Due to the preliminary test results, the main test had to be executed.

Main Test
Four tests were done for the reference mixture (barium nitrate and cellulose) with different wt. % oxidizer (barium nitrate).

Table 1 – Burning times and rates of reference mixtures

Barium nitrate [wt. %]	Burning time over 200 mm [s]	Burning rate [mm/s]
50	130	1.54
55	127	1.57
60	122	1.64
70	168	1.19

 

The highest burning rate of 1.64 mm/s was found for the mixture with 60 wt. % oxidizer.

Mixtures of the test item with cellulose were prepared with different wt. % of the test item and tested.

Table 2 – Burning times and rates of test item mixtures

Test item [%]	Burning time over 200 mm [s]	Burning rate [mm/s]
10	187	1.07
20	226	0.89
30	262	0.76
60	Flame extinguished after 189 s and 70 mm	n.a.
90	Test mixture melted, mixture showed short burning, flame extinguished in preliminary burning phase	n.a.

 

As the maximum burning rate of the test item and cellulose mixtures is lower than the maximum burning rate of the reference mixture, six tests were done only with the three mixtures with the highest burning rates to verify these values (Table 3).

Table 3 – Burning times and rates of 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%	187	1.07	193	1.04	188	1.06	193	1.04	195	1.03	194	1.03
20%	226	0.89	230	0.87	235	0.85	239	0.84	233	0.86	234	0.86
30%	262	0.76	274	0.73	269	0.74	264	0.76	279	0.72	285	0.70

 

Each mixture was measured six times, the mean burning rate for the one with the highest burning rate (10%) was 1.04 mm/s. The difference between the mean burning rate and the maximum burning rate was ≤ 10% for this mixture.

The maximum burning rate of the test item and cellulose mixtures (1.07 mm/s) was lower than that of the reference mixture of cellulose and barium nitrate (1.64 mm/s).

Therefore, the test item has no oxidizing properties.

Description of key information

Non oxidising solid (EU Method A.17.)

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Additional information

The maximum burning rate of test item and cellulose mixture was slower (1.07 mm/s) than that of the reference mixture of barium nitrate and cellulose 2:1 (1.64 mm/s).

Justification for classification or non-classification

The available data on oxidizing properties of the test substance do not meet the criteria for classification according to Regulation (EC) 1272/2008, and are therefore conclusive but not sufficient for classification: The maximum burning rate of the test mixture was less than that of the reference mixture (barium nitrate and cellulose 2:1) in a test according to the EU method A.17.