Chromate(5-), bis[4-(hydroxy-κO)-7-[2-(2-hydroxy-1-naphthalenyl)diazenyl]-3-[2-[2-(hydroxy-κO)- 3-nitro-5-sulfophenyl]diazenyl]-2-naphthalenesulfonato(4-)]-, sodium (1:5)

Explosiveness

Link to relevant study record(s)

Reference

Endpoint:

explosive properties of explosives

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.14 (Explosive properties)

GLP compliance:

yes

Key result

Parameter:

thermal sensitivity - Koenen test: diameter of the orifice plate

Remarks on result:

not thermal sensitive if heated under defined confinement

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

-Thermal stress

Exposing the test substance for 300 s to thermal stress did not result in an explosion. None of the test tubes showed a deformation. From this it was concluded that the test substance was not explosive when exposed to thermal stress.

-Mechanical stress by shock

Exposing the test substance to mechanical stress by shock, it resulted in the formation of a solid pellet of the test substance. No traces of a vigorous reaction were observed. From this it was concluded that the test substance did not react under mechanical stress by shock and therefore had not to be seen as explosive.

-Mechanical stress by friction

Exposing the test substance to mechanical stress by friction, it did not lead to a change in test substance consistency. From this, it was concluded that the test substance did not react under mechanical stress by friction and therefore had not to be seen as explosive.

Interpretation of results:

other: Non explosive

Remarks:

according to the CLP Regulation (EC 1272/2008)

Conclusions:

The substance is not explosive when exposed to thermal or mechanical stress under the conditions of the test.

Executive summary:

In order to evaluate the explosive properties of the test substance, a study was conducted according to the method A.14 of EEC-Directive 92/69 EEC. Thermal sensitivity (effect of a flame), mechanical sensitivity (shock) and mechanical sensitivity (friction) tests were performed with Koenen test, BAM Fallhammer and BAM Friction apparatus, respectively. The substance was found to be not explosive when exposed to thermal or mechanical stress under the conditions of the test.

Description of key information

not explosive

Key value for chemical safety assessment

Explosiveness:

non explosive

Additional information

In order to evaluate the explosive properties of the test substance, a study was conducted according to the method A.14 of EEC-Directive 92/69 EEC. Thermal sensitivity (effect of a flame), mechanical sensitivity (shock) and mechanical sensitivity (friction) tests were performed with Koenen test, BAM Fallhammer and BAM Friction apparatus, respectively. The substance was found to be not explosive when exposed to thermal or mechanical stress under the conditions of the test.

Justification for classification or non-classification

According to the CLP Regulation (EC1272/2008), the classification criteria are based on the results obtained with the test methods described in UN RTDG (Part I of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria).

The study conducted to determine explosive proprieties of the substance was according to the EU test method A.14 and comprised three parts:

− thermal sensitivity test to determine the effect of heating under confinement (Koenen test);

− mechanical sensitivity test to determine the sensitivity to impact;

− mechanical sensitivity test to determine the sensitivity to friction.

The criterion related to the thermal sensitivity test to determine the effect of heating under confinement (Koenen test) is equal in EU test method A.14 and UN RTDG test series 2. The tests for mechanical sensitivity to impact and friction of the EU test method A.14 define if a substance/mixture has an explosive hazard. UN RTDG test series 3 lead to the decision whether a substance/mixture is too sensitive to mechanical stimuli; so lower limits are stated.

The test conducted on the substance evidenced no explosion under effect of flame and no sensitivity to shock and friction.