N-(5-chloro-2-methoxyphenyl)-2-[(2-methoxy-4-nitrophenyl)azo]-3-oxobutyramide

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising solids

Type of information:

read-across based on grouping of substances (category approach)

Adequacy of study:

key study

Justification for type of information:

REPORTING FORMAT FOR THE CATEGORY APPROACH
Please see "Monoazo Yellow Pigments Category document" attached in section 13.2

Reason / purpose for cross-reference:

read-across source

Key result

Sample tested:

test mixture (not specified)

Parameter:

maximum burning rate

Result:

>= 141 - <= 258 s

Remarks on result:

other: Average burning times.

Key result

Sample tested:

reference mixture (not specified)

Parameter:

maximum burning rate

Result:

>= 55 - <= 113 s

Remarks on result:

other: Average burning times.

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.

Oxidizing properties:

The results of the reference mixtures of Potassium bromate and Cellulose are shown in Table 1:

Table 1: 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 2:

Table 2: Mixtures from test item and Cellulose

Test item – Cellulose	Test 1	Test 2	Test 3	Test 4	Test 5	Average
4:1	140 s	138 s	146 s	132 s	148 s	141 s
1:1	239 s	252 s	278 s	270 s	250 s	258 s

The mean burning times of the test item-to-Cellulose ratio 4:1 (141 s) and 1:1 (258 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

Conclusions:

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

The objective of this study was the determination of the oxidizing properties of the test item according to the  Recommendations on the TRANSPORT OF DANGEROUS GOODS: Manual of Tests and Criteria, 5. edition, New York and Geneva, 2009: Division 5.1: Oxidizing Solids, Test O.1.

Result:

The mean burning times of the test item-to-Cellulose ratio 4:1 (141 s) and 1:1 (258 s) are higher than the mean burning times of a 3:7 and 2:3 reference 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.

The test item is not an oxidizing solid.

Description of key information

Key study: Based on read across category approach, the test item does not have to be classified as oxidizing solid according to CLP Regulation (EC) no. 1272/2008.

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Justification for classification or non-classification

Based on the available data, the substance does not have to be classified as oxidizing solid according to CLP Regulation (EC) no. 1272/2008.