disodium 4-amino-6-((4-((4-(2,4-diaminophenyl)azo)phenylsulfamoyl)phenyl)azo)-5-hydroxy-3-((4-nitrophenyl)azo)naphthalene-2,7-disulfonate

Explosiveness

Link to relevant study record(s)

Reference

Endpoint:

explosive properties of explosives

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1996

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Qualifier:

according to guideline

Guideline:

other: A 14 (body responsible: Zeneca Specialties Blackley, Manchester)

GLP compliance:

yes (incl. QA statement)

Key result

Parameter:

sensitiveness to impact: impact energy (J)

Remarks on result:

not sensitive to impact using an impact energy of 40 J

Key result

Parameter:

sensitiveness to friction: friction load (N)

Remarks on result:

not sensitive to friction using a friction load of 360 N

Key result

Parameter:

thermal sensitivity - Koenen test: diameter of the orifice plate

Remarks on result:

negative (not further specified)

Mechanical Sensitivity (Shock): No signs of ignition or explosion on impact. When the test assembly was dismantled after the trial, there were no sign of decompisition in alle the six tests.

Mechanical Sensitivity (Friction): No signs of ignition or explosion during all the six tests.

Thermal sensitivity

Trial Number	Orifice diameter	Tube condition	t1	t2
1	6mm	0	15s	294s
2	6mm	0	12s	323s
3	6mm	0	9s	321s
4	2mm	D	13s	62s
5	2mm	B	11s	311s
6	2mm	D	12s	51s

where

0 = Tube recovered unchanged

B = Bottom and wall of tube bulged out

D = wall of tube split

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

In trials 4 and 6, the splitting of the tube wall exstinguished the burner flames just over a minute into the test.

In the other trials, after a time t1, the fumes venting through the orifice ignited and burned with a flame for a time t2.

Interpretation of results:

other: non explosive

Conclusions:

Limit Impact energy > 40 Joules. The test substance is not classified as explosive in terms of its mechanical sensitivity with respect to shock.
Limit Load > 360 Newtons. the test substance is not classified as explosive in terms of its mechanical sensitivity with respcet to friction.
No explosion were observed using either the 6mm or the 2mm orifice plates, ie. Limiting diameter < 2mm. The test substance is not classified as explosive in terms of its thermal sensitivity.

the test substance did not give a positive result in tests used to determine its sensitivity to shock, friction or heating under confinement, and is therefore not classififed as an explosive.

Description of key information

Non explosive

Key value for chemical safety assessment

Explosiveness:

non explosive

Additional information

Limit Impact energy is > 40 Joules. The test substance is not classified as explosive in terms of its mechanical sensitivity with respect to shock.

Limit Load is > 360 Newtons. The test substance is not classified as explosive in terms of its mechanical sensitivity with respcet to friction.

No explosion were observed using either the 6mm or the 2mm orifice plates, ie. Limiting diameter < 2mm. The test substance is not classified as explosive in terms of its thermal sensitivity.

The test substance did not give a positive result in tests used to determine its sensitivity to shock, friction or heating under confinement, and is therefore not classififed as an explosive.

Justification for classification or non-classification

The test substance did not give a positive result in tests used to determine its sensitivity to shock, friction or heating under confinement, therefore no classification for explosive properties has been warranted under EC 1272/2008.