2-[[3-acetamido-4-[(2-chloro-4-nitrophenyl)azo]phenyl](2-cyanoethyl)amino]ethyl acetate

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 July 2th to July 4th, 2019

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

UN Manual of Tests and Criteria: Test O.1 (Test for oxidizing solids)

GLP compliance:

no

Contact with:

powdered cellulose

Duration of test (contact time):

3 min

Sample tested:

1:1 sample-to-cellulose ratio

Parameter:

mean burning time

Result:

> 180 s

Sample tested:

4:1 sample-to-cellulose ratio

Parameter:

mean burning time

Result:

> 180 s

Sample tested:

reference: 3:7 mixture potassium bromate + cellulose

Parameter:

mean burning time

Result:

128 s

Residual moisture

The test item contained a residual moisture of <0.1 w/w %, which was determined by drying at 50 °C under vacuum.

The reference item potassium bromate contained a residual moisture of <0.1 w/w %, which was determined by drying at 65 °C.

The reference item cellulose contained a residual moisture of 5.21 w/w %, which was determined by drying at 105 °C.

Burning times of the reference mixtures of potassium bromate and cellulose

Potassium bromate – Cellulose	Test 1 / s	Test 2 / s	Test 3 / s	Test 4 / s	Test 5 / s	Test 6 / s	Average / s
3:7	124	129	131	127	131	125	128

The tests with the mixtures potassium bromate-cellulose 2:3 and 3:2 were not performed, because the burning time of the mixtures of the test item with cellulose was higher than the burning time of the reference mixtures 3:7.

Burning times of the mixtures of the test item and cellulose

Test item – Cellulose	Test 1 / s	Test 2 / s	Test 3 / s	Test 4 / s	Test 5 / s	Average / s
4:1	>180	>180	>180	>180	>180	>180
1:1	>180	>180	>180	>180	>180	>180

Based on test results, test item does not have to be classified as oxidising solid.

Interpretation of results:

other: not classified according to the CLP Regulation (EC 1272/2008).

Conclusions:

Test item is not an oxidising solid.

Executive summary:

A 60° glass funnel, sealed at the narrow end, with an internal diameter of 70 mm was used to form the mixtures into a truncated conical pile with base diameter of 70 mm on a cool, impervious, low heat conductive plate. A 150 × 150 mm plate with a thickness of 6 mm and a thermal conductivity (at a temperature of 0 °C) of 0.23 W/m/K was used.

Using the conical funnel, the mixture was formed into a truncated conical pile, with a base diameter of 70 mm, covering the looped ignition wire resting on the low heat conducting plate. The plate was placed in a ventilated area and the test performed at atmospheric pressure with the ambient temperature 20 ± 5 °C.

Power was applied to the ignition wire and was maintained for the duration of the test or for 3 min if the mixture did not ignite and burn. The recorded burning time was taken from when the power was switched on to when the main reaction (e.g. flame, incandescence or glowing combustion) ended. Intermittent reactions, such as sparking or sputtering, after the main reaction were not taken into account. The test was performed five times on the test item. Five tests were performed with each reference mixture.

The burning time of the test item with cellulose (4:1 and 1:1) was higher than the burning time of the reference mixture of potassium bromate and cellulose (3:7).

Accordingly, test item does not have to be classified as oxidising solid:

UN Transport Regulation: test item does not have to be classified as oxidising solid in Division 5.1.

CLP Regulation (EC 1272/2008), Annex 1: 2.14: test item does not have to be classified as oxidising solid.

Description of key information

Non oxidising.

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Additional information

A 60° glass funnel, sealed at the narrow end, with an internal diameter of 70 mm was used to form the mixtures into a truncated conical pile with base diameter of 70 mm on a cool, impervious, low heat conductive plate. A 150 × 150 mm plate with a thickness of 6 mm and a thermal conductivity (at a temperature of 0 °C) of 0.23 W/m/K was used.

Using the conical funnel, the mixture was formed into a truncated conical pile, with a base diameter of 70 mm, covering the looped ignition wire resting on the low heat conducting plate. The plate was placed in a ventilated area and the test performed at atmospheric pressure with the ambient temperature 20 ± 5 °C.

Power was applied to the ignition wire and was maintained for the duration of the test or for 3 min if the mixture did not ignite and burn. The recorded burning time was taken from when the power was switched on to when the main reaction (e.g. flame, incandescence or glowing combustion) ended. Intermittent reactions, such as sparking or sputtering, after the main reaction were not taken into account. If the heating wire broke during the test, the test was repeated unless breaking of the wire clearly did not affect the result. The test was performed five times on the test item. Five tests were performed with each reference mixture.

The burning time of the test item with cellulose (4:1 and 1:1) was higher than the burning time of the reference mixture of potassium bromate and cellulose (3:7).

Justification for classification or non-classification

The average of the burning times of the mixtures of the test item and cellulose (4:1 and 1:1) was >180 s.

Based on test results, test item does not have to be classified as oxidising solid. In particular:

UN Transport Regulation: test item does not have to be classified as oxidising solid in Division 5.1.

CLP Regulation (EC 1272/2008), Annex 1: 2.14: test item does not have to be classified as oxidising solid.