Formaldehyde, reaction products with m-phenylenediamine, sodium sulfide (Na2S) and sulfur

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:

October 26, 2011 - January 13, 2012

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

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.6316 (Explodability)

Deviations:

no

GLP compliance:

no

Key result

Parameter:

sensitiveness to friction: friction load (N)

Remarks on result:

negative (not further specified)

Key result

Parameter:

thermal sensitivity - Koenen test: limiting diameter (mm)

Remarks on result:

negative (not further specified)

Parameter:

other: Mechanical Sensitivity (Shock)

Remarks:

migrated information

Remarks on result:

negative (not further specified)

Thermal Stability

TheDSC-measurement in closed stainless steel crucibles showed noendothermic or exothermic effects up to the leakage of the crucible at approximately 328 °C. The leakage was most likely caused by the vapour pressure of water a main component of the test item.

 

 

Explosive Properties

Due to the high pressure caused by the evaporation of the test item and the leakage of the crucibles the measurement could not be carried out until 500 °C. Therefore the test on explosive properties was performed.

Mechanical sensitivity (friction):

No explosion was observed within 6 tests using a pin load with 360 N.

 

Mechanical Sensitivity (Shock):

No explosion within 6 tests using a mass of 10 kg falling from a height of 0.4 m was observed.

 

Thermal sensitivity:

Three tests with a circular nozzle plate with a hole of 2 mm diameter were performed. The following table gives the results of the tests on thermal stability.

 

Test no.	Weight of test item (g)	Nozzle width (mm)	t1 (s)	t2 (s)	Reaction	Appearance; Number of Fragments
1	26.6	2.0	90	> 300	flame	0
2	26.7	2.0	100	> 300	flame	0
3	27.0	2.0	95	> 300	flame	0

 

t₁: time to any reaction, e.g. whistle or flame

t₂: time to main reaction, e.g. rupture of tube or flashing

The test on thermal sensitivity carried out with a nozzle with a diameter of 2.0 mm showed no explosion. Compared to the nozzle with a diameter of 6.0 mm the venting area of the nozzle with 2.0 mm is smaller by an order of magnitude. Additionally the main compound of the test item is water (84.6 %) which has no explosives properties on its own. Due to these facts an explosion with a nozzle width of 6.0 mm is excluded.

Interpretation of results:

GHS criteria not met

Executive summary:

Explosive Properties

The test item has no danger of explosion according to the explosive properties in the sense of the European Commission Regulation (EC) No. 440/2008, method A.14..

Description of key information

The test item is not explosive.

Key value for chemical safety assessment

Explosiveness:

non explosive

Additional information

The test item has no danger of explosion according to the explosive properties in the sense of the European Commission Regulation (EC) No. 440/2008, method A.14.

Justification for classification or non-classification

Classification, Labelling, and Packaging Regulation (EC) No 1272/2008
Based on the structure of the molecule and taking into account the provisions laid down in Regulation (EC) No 1272/2008 (CLP), as amended for the eighteenth time in Regulation (EU) 2022/692., the test item does not have to be classified with respect to explosiveness.