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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:

From 28 June 2005 to 4 October 2005

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

reference to same study

Qualifier:

according to guideline

Guideline:

EU Method A.14 (Explosive properties)

Deviations:

yes

Remarks:

See below for details

Principles of method if other than guideline:

Deviation: in the thermal sensitivity test, minor modification to the tube packing procedure as detailed in “Safety characteristic data of explosive substances – Methods of the Bundesanstalt für material prüfung – BAM” Koenen, Ide and Smart. As indicated by the study director, this modification does not have any effect on the conclusion of the test.

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

Remarks:

Shock test according to EU A.14 Method. A 40-J impact energy corresponds to a 10-kg weight dropped from 40 cm.

Key result

Parameter:

sensitiveness to friction: friction load (N)

Remarks on result:

not sensitive to friction using a friction load of 360 N

Remarks:

Friction test according to EU A.14 Method

Key result

Parameter:

thermal sensitivity - Koenen test: diameter of the orifice plate

Remarks on result:

not thermal sensitive if heated under defined confinement

Remarks:

Koenen test according to EU A.14 Method.

Table 1: Shock test

Test No.	Weight (kg)	Height (m)	Results
1 2 3 4 5 6	10 10 10 10 10 10	0.4 0.4 0.4 0.4 0.4 0.4	No ignition, no explosion “ “ “ “ “

 

Table 2: Friction test

Test No.	Weight (N)	Results
1 2 3 4 5 6	360 360 360 360 360 360	No ignition, no explosion “ “ “ “ “

 

Table 3: Koenen steel tube test

Hole diameter (mm)	Weight (g)	T1 (s)	T2 (s)	Results
6 6 6	8.971 8.926 9.946	31 36 39	237 219 221	Negative “ “
2 2 2	8.917 8.997 8.940	33 30 36	212 212 219	Negative “ “

T1 : time from application of the flame to a noticeable effect from the orifice.

T2 : time from application of the flame to the end of the combustion without recorded event (e.g. explosion) as in these tests or to an explosion.

Interpretation of results:

GHS criteria not met

Conclusions:

Iron oxide isostearate does not present a danger of explosion under the conditions of the test.

Executive summary:

The explosion properties of iron oxide isostearate were assessed according to EU Method A.14 and GLP using the following systems:

1) The BAM Fall Hammer (or shock) apparatus

2) The BAM friction apparatus

3) The Koenen steel tube apparatus to test the thermal sensitivity.

According to the results of these three tests, iron oxide isostearate has been determined not to have shock sensitivity, friction sensitivity, or thermal sensitivity to explosion.

Description of key information

Iron oxide isostearate does not present a danger of explosion.

Key value for chemical safety assessment

Explosiveness:

non explosive

Additional information

A GLP experimental study, according to EU Method A.14 and scored as Klimisch 1, is selected as a key study, indicating that iron oxide isostearate does not present a danger of explosion under the conditions of the test.

Justification for classification or non-classification

Based on data and experience, iron oxide isostearate does not require a classification regarding its explosive properties under CLP.