4-[(4-chloro-2-nitrophenyl)azo]-3-hydroxy-N-(2-methylphenyl)naphthalene-2-carboxamide

Explosiveness

Administrative data

Endpoint:

explosiveness

Type of information:

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

Adequacy of study:

key study

Study period:

04 April to 01 June 2012

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Guideline study (EU A.14Guideline study (EU A.14), UN Transport Regulations: UN-Tests 1b/2b, 3a (ii), 3b (i) respectively)

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2012

Report date:

2012

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

EU Method A.14 (Explosive properties)

Test guideline 2

Qualifier:

according to guideline

Guideline:

other: UN Transport Regulations: UN-Tests 1b/2b, 3a (ii), 3b (i)

Test material

Test material information

Constituent 1

Reference substance name:

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

EC Number:

229-102-5

EC Name:

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

Cas Number:

6410-32-8

IUPAC Name:

3-hydroxy-4-[(2-methyl-4-nitrophenyl)diazenyl]-N-(2-methylphenyl)-2-naphthamide

Test material form:

solid: particulate/powder

Remarks:

migrated information: powder

Results and discussion

Small-scale preliminary tests

Small-scale preliminary tests 1

Parameter:

other: More sensitive to shock than m-dinitrobenzene

Remarks:

migrated information

Remarks on result:

not measured/tested

Small-scale preliminary tests 2

Parameter:

other: More sensitive to friction than m-dinitrobenzene

Remarks:

migrated information

Remarks on result:

not measured/tested

Small-scale preliminary tests 3

Parameter:

other: Explosive under influence of flame

Remarks:

migrated information

Remarks on result:

negative (not further specified)

Small-scale preliminary tests 4

Parameter:

other: Explosive (not specified)

Remarks:

migrated information

Remarks on result:

negative (not further specified)

Any other information on results incl. tables

Residual moisture:

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

Thermal stability (DSC):

In the temperature range from 280-290 °C an endothermic effect was observed, which leads straight into an exothermic effect from 290-360 °C, with an average decomposition energy of -700 J/g. Due to the decomposition energy being above 500 J/g, the main tests on explosive properties had to be carried out.

Heating under confinement: Koenen-Test UN-Test: 1 (b) / 2 (b)

Tests with orifice plates with 1.0 and 2.0 mm diameter orifice were performed.

No.	Sample weight / g	Diameter orifice plate /mm	Reaction time t1 /s	Reaction time t2 /s	Reaction	Appearance of tube
1	8.53	1	19	>300	t1:  Sparkling t2: No reaction	0, Slight deformation of the tube
2	8.35	1	19	>300	t1:  Sparkling t2: No reaction	0, Unchanged
3	8.20	1	21	>300	t1: Sparkling t2: No reaction	0, Unchanged
4	8.78	2	26	>300	t1: Sparkling t2: No reaction	0, Unchanged
5	8.20	2	23	>300	t1: Sparkling t2: No reaction	0, Unchanged
6	8.44	2	24	>300	t1: Sparkling t2: No reaction	0, Unchanged

 t1:     time to first reaction: e.g. burning; t2:     time to main reaction: e.g. frizzling, bursting of tube

The test item shows no reaction with either an orifice plate with a orifice-diameter of 1mm or 2 mm on heating under confinement. The result is considered "-". Due to the chemical structure and the physical state (pure solid) an explosion for an orifice­diameter of 6 mm can be excluded.

The Koenen-Test (UN-Test 1(b) / 2(b)) of the test item shows no effect an heating under confinement with an orifice plate with an orifice diameter of 1 or 2 mm. The assessment of the results with regard to test series 1 (b) was "-". The assessment of the results with regard to test series 2 (b) was "-".

Mechanical sensitivity: Friction: BAM Friction Apparatus UN-Test: 3 (b) (i)

No explosion was observed within 6 tests using a 360 N loading.

The assessment of the results with regard to test series 3 (b) (i) was "-".

Mechanical sensitivity: Impact: BAM Fallhammer UN-Test: 3 (a) (ii)

No explosion was observed within 6 tests dropping the 10 kg mass from 0.50 m (50 J).

The assessment of the results with regard to test series 3 (a) (ii) was "-".

Applicant's summary and conclusion

Interpretation of results:

non explosive

Remarks:

Migrated information

Conclusions:

The test item does not have to be classified as explosive in Class 1 according to the UN-Transport Regulations. The test item does not have to be classified as explosive according to GHS and EC 1272/2008 (CLP-Guideline) Annex 1:2.1. The test item has no explosive properties according to EC 440/2008, Part A, A.14.

Executive summary:

It was tested whether the test item shows some effect on heating under confinement according to UN-Test series 1 (b) / 2 (b) (Koenen-Test), is sensitive to impact according to UN-Test series 3 (a) (ii) (BAM Fallhammer) or is sensitive to friction according to UN-Testseries 3 (b) (i) (BAM friction apparatus) (Class 1). The test item was negative in these tests. The test item is not explosive.