3-hydroxy-4-[(2-methyl-4-nitrophenyl)azo]-N-(o-tolyl)naphthalene-2-carboxamide

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

10-16 April 2012

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Guideline study (UN O.1)

Qualifier:

according to guideline

Guideline:

other: Transport Regulations UN-Test O.1

Contact with:

powdered cellulose

Duration of test (contact time):

125 - 214 s

Sample tested:

other: not specified (migrated information) mean burning time test mixture

Parameter:

other: mean burning time test mixture

Result:

>= 139 - <= 205 s

Sample tested:

other: not specified (migrated information) mean burning time reference mixture

Parameter:

other: mean burning time reference mixture

Result:

>= 55 - <= 113 s

Results

1. Residual moisture

The test item contains a residual moisture of 0.1 wt%, which was determined by drying the test item under vacuum.

The reference item potassium bromate contains a residual moisture of < 0.1 wt%, which was determined by drying the test item under vacuum. The reference item cellulose contains a residual moisture of 4.0 wt%, which was determined by drying the test item under vacuum.

2. Oxidizing properties

The results of the reference mixtures of Potassium bromate and Cellulose are shown in Table 2:

Table 2: Reference mixtures from Potassium bromate and Cellulose

Potassium bromate - Cellulose	Test 1	Test 2	Test 3	Test 4	Test 5	Average
3:7	109 s	114 s	127 s	116 s	100 s	113 s
2:3	51 s	56 s	58 s	59 s	53 s	55 s

 The results of the mixtures of test item and Cellulose are shown in Table 3:

Table 3: Mixtures from test item and Cellulose

Test item - Cellulose	Test 1	Test 2	Test 3	Test 4	Test 5	Average
4:1	148 s	131 s	149 s	142 s	125 s	139 s
1:1	198 s	206 s	214 s	201 s	208 s	205 s

 

The mean burning times of the test item-to-Cellulose ratio 4:1 (139 s) and 1:1 (205 s) are higher than the mean burning times of a 3:7 and 2:3 mixture of Potassium bromate and Cellulose (113 s or 55 s, respectively).

The test item in the 4:1 or 1:1 test item-to-Cellulose ratio exhibits a mean burning time greater than the mean burning time of a 3:7 mixture of Potassium bromate and Cellulose.

Interpretation of results:

other: no oxidising properties

Remarks:

Migrated information UN-Transport Regulations / GHS

Conclusions:

The test item does not have to be classified as oxidizing solid in Division 5.1 according to the UN-Transport Regulations.
The test item does not have to be classified as oxidizing solid according to GHS and EC 1272/2008 (CLP-Guideline) Annex 1: 2.14.

Executive summary:

It was tested whether the test item should be assigned as oxidizing solid with respect to UN-Transport Regulations (Division 5.1) and GHS or EC 1272/2008 (CLP-Guideline) Annex 1:2.14, respectively.

Result: The test item in the 4:1 or 1:1 test item-to-Cellulose ratio exhibits a mean burning time greater than the mean burning time of a 3:7 reference mixture of Potassium bromate and Cellulose.

The test item is not an oxidizing solid.

Description of key information

It was tested whether the test item should be assigned as oxidizing solid with respect to UN-Transport Regulations (Division 5.1) and GHS or EC 1272/2008 (CLP-Guideline) Annex 1:2.14, respectively.

Result: The test item in the 4:1 or 1:1 test item-to-Cellulose ratio exhibits a mean burning time greater than the mean burning time of a 3:7 reference mixture of Potassium bromate and Cellulose.

The test item is not an oxidizing solid.

Key value for chemical safety assessment

Oxidising properties:

non oxidising