2-(2,6-diethyl-4-methyl-phenyl)propanediamide

Explosiveness

Link to relevant study record(s)

Reference

Endpoint:

explosiveness

Type of information:

experimental study

Adequacy of study:

key study

Study period:

31 July 2003 to 01 August 2003

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.14 (Explosive properties)

Deviations:

no

GLP compliance:

yes

Parameter:

other: More sensitive to shock than m-dinitrobenzene

Remarks:

migrated information

Remarks on result:

not measured/tested

Parameter:

other: More sensitive to friction than m-dinitrobenzene

Remarks:

migrated information

Remarks on result:

not measured/tested

Parameter:

other: Explosive under influence of flame

Remarks:

migrated information

Remarks on result:

negative (not further specified)

Parameter:

other: Explosive (not specified)

Remarks:

migrated information

Remarks on result:

negative (not further specified)

Mechanical Sensitivity (Shock)

Sample preparation: sieved to ≤500 µm

Sample volume: 40 mm³

Drop weight: 10 kg

Drop height: 0.4 m

Impact energy: 40 Joules

Table 1: Results

Test number	1	2	3	4	5	6
Observation	N	N	N	N	N	N

where N = no signs of ignition or explosion on impact. When the test assembly was dismantled after the first trial, there were no signs of decomposition.

Mechanical Sensitivity (Friction)

Sample preparation: sieved to ≤500 µm

Weight identity: no. 9

Position: No. VI

Friction load: 360 Newtons

Table 2: Results

Test number	1	2	3	4	5	6
Observation	D	D	D	D	D	D

where D = signs of decomposition of the test substance, as indicated by the black marks on the porcelain peg and plate after each test.

Thermal Sensitivity

Sample preparation: tested as received.

Table 3: Results

Test number	Orifice diameter	Tube condition	t1	t2
1	6 mm	O	16s	224s
2	6 mm	O	12s	218s
3	6 mm	O	13s	212s
4	2 mm	O	16s	206s
5	2 mm	O	14s	220s
6	2 mm	O	14s	216s

where:

O = tube recovered unchanged

t₁ = time elapsed from ignition of burners to the first noticeable reaction of the test substance

t₂ = time elapsed from t₁ to the end of the reaction

During testing after a time t₁ and lasting for a time t₂, test material vented with flame through the orifice.

No explosions occurred and each test was suspended after a total heating period of 5 minutes.

 

Interpretation of results:

non explosive

Remarks:

Migrated information

Conclusions:

Each test performed for explosivity, mechanical sensitivity (shock), mechanical sensitivity (friction) and thermal sensitivity, provided a negative result. Under the conditions of the three tests, the test material was considered to be non-explosive. The study is considered to be reliable, relevant and adequate for risk assessment and classification and labelling purposes.

Executive summary:

The explosivity of the test material was determined in three tests performed in accordance with EU Method A.14. The explosivity of the test material was assessed using mechanical sensitivity (shock), mechanical sensitivity (friction) and thermal sensitivity tests. All tests provided negative results in the early stages of testing and so were not extended for further assessment. Under the conditions of the three tests, the test material was considered to be non-explosive.

Description of key information

Non explosive,  EU Method A.14,  Jackson 2003

Key value for chemical safety assessment

Explosiveness:

non explosive

Additional information

The explosivity of the test material was determined in three tests performed in accordance with EU Method A.14. The explosivity of the test material was assessed using mechanical sensitivity (shock), mechanical sensitivity (friction) and thermal sensitivity tests. All tests provided negative results in the early stages of testing and so were not extended for further assessment. Under the conditions of the three tests, the test material was considered to be non-explosive.

The study was performed in line with GLP and a standardised guideline with a high standard of reporting. The study was assigned a reliability score of Klimisch 1 and considered suitable for assessment as an accurate reflection of the test substance.

EU Method A.14 is suitable for the purposes of risk assessment but does not fulfil all the criteria for classification and labelling under Regulation EC 1272/2008. The EU Method A.14 is similar to the early testing stages detailed in the UN Recommendations of the Transport of Dangerous Goods Manual of Test and Criteria (5th revised edition) and along with analysis of the chemical structure of the substance as described in the screening criteria for explosive properties in section 2.1.4.3 of Regulation EC 1272/2008 and section 3.3 (Table A6.1) of the UN Recommendations of the Transport of Dangerous Goods Manual of Test and Criteria (5th revised edition) it can be concluded that the substance is not explosive. The available data, as a weight of evidence, are considered complete, accurate and adequate for risk assessment and classification and labelling, and the conclusion, non-explosive was taken forward for risk assessment.

Justification for classification or non-classification

In accordance with Regulation (EC) No. 1272/2008, the test material does not require classification as explosive as it produced negative results in the early stages of all the explosive tests performed and assessment of the structure of the test material did not indicate and groups present on the molecule associated with explosivity.

In accordance with Directive 2001/59/EC, the test material does not require classification as explosive as it produced negative results in the early stages of all the explosive tests performed and assessment of the structure of the test material did not indicate and groups present on the molecule associated with explosivity.