Reaction mass of Cobaltate(2-), [2-[[[4-hydroxy-3-[[2-oxo-1-[(phenylamino)carbonyl]propyl]azo]phenyl]sulfonyl]amino]benzoato(3-)][2-[[2-hydroxy-5-[(phenylamino)sulfonyl]phenyl]azo]-3-oxo-N-phenylbutanamidato(2-)]-, disodium and Cobaltate(3-), bis[2-[[[4-hydroxy-3-[[2-oxo-1-[(phenylamino)carbonyl]propyl]azo]phenyl]sulfonyl]amino]benzoato(3-)]-, trisodium and sodium bis[2-[[2-hydroxy-5-[(phenylamino)sulphonyl]phenyl]azo]-3-oxo-N-phenylbutyramidato(2-)]cobaltate(1-)

Explosiveness

Link to relevant study record(s)

Reference

Endpoint:

explosive properties of explosives

Remarks:

screening experiment

Type of information:

experimental study

Adequacy of study:

supporting study

Study period:

January from the 16th to the 29th, 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

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

Qualifier:

according to guideline

Guideline:

other: OECD Test Guideline 113: Thermal Stability

Version / remarks:

1981

GLP compliance:

yes (incl. QA statement)

Parameter:

other: screening test on thermal behaviour

Remarks on result:

other: the onset of exothermic decomposition is below 500 °C, but the exothermic decomposition energy is less than 500 J/g

The test item starts to decompose at a temperature of approx. 180 °C with an averaged energy release of -340 J/g.

	Sample weight (mg)	Start effect (°C)	Peak (°C)	Energy (J/g)
Replicate 1	5.64	180	240.78	-324.88
Replicate 2	4.90	190	247.85	-463.97
Replicate 3	5.60	180	243.31	-239.30

Interpretation of results:

other: not classified, according to the CLP Regulation (EC) No 1272/2008

Conclusions:

Non explosive

Executive summary:

The thermal behaviour of test item was assessed using the DSC analysis, according to the OECD guideline 113. The test item is weighed into the glass crucible. At least two samples with about 5 - 6 mg of the test item are used in the test. The prepared crucibles (crucible with test item and reference crucible) were placed in the DSC apparatus and both crucibles were heated up from room temperature to 500 °C with a heating rate of 3 K/min.

The test item starts to decompose at a temperature of approx. 180 °C with an averaged energy release of -340 J/g.

Conclusion

Due to the fact that the energy of the exothermic decomposition was below the threshold of -500 J/g, further tests for explosive properties had not to be performed.

Description of key information

Non explosive

Key value for chemical safety assessment

Explosiveness:

non explosive

Additional information

OECD 113 - DSC analysis

Justification for classification or non-classification

According to the CLP Regulation (EC) No 1272/2008, 2.1.4.2. Screening procedure section, the screening procedure is aimed at identifying the presence of such reactive groups and the potential for rapid energy release. If the screening procedure identifies the substance or mixture to be a potential explosive, the acceptance procedure (section 10.3 of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria) has to be performed.

Screening procedure failed to evidence any reason for concern: although the test item starts to decompose at a temperature lower than 500 °C, the averaged energy release is ca -340 J/g (i.e. less than 500 J/g).

In conclusion, the substance can be considered non explosive, according to the CLP Regulation (EC) No 1272/2008.