Phenol, 4-amino-, reaction products with 4-(2-naphthalenylamino)phenol and sodium sulfide (Na2(Sx))

Explosiveness

Administrative data

Endpoint:

explosive properties of explosives

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017-10-25 - 2018-04-23

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Report date:

2018

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

UN Manual of Tests and Criteria: Part I: Classification procedures, test methods and criteria relating to explosives of Class 1

Version / remarks:

Rev. 6, 2015

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

other: OECD Test Guideline 113: Thermal Stability

Version / remarks:

1981

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Test material

Test material information

Constituent 1

Reference substance name:

Phenol, 4-amino-, reaction products with 4-(2-naphthalenylamino)phenol and sodium sulfide (Na2(Sx))

EC Number:

291-833-0

EC Name:

Phenol, 4-amino-, reaction products with 4-(2-naphthalenylamino)phenol and sodium sulfide (Na2(Sx))

Cas Number:

90480-94-7

Molecular formula:

not applicable

IUPAC Name:

Reaction product of 4-aminophenol with 4-​(2-​naphthalenylamino)​phenol and sodium polysulfide

Test material form:

solid

Details on test material:

Test item: Leuco Sulphur Black 11
Appearance: black solid
CAS No: 90480-94-7
EC No: 291-833-0

Results and discussion

Small-scale preliminary tests

Key result

Parameter:

other: Thermal stability

Remarks on result:

other: Due to the decomposition energy being below the threshold of -500 J/g, further tests for explosive properties did not have to be performed.

Any other information on results incl. tables

Thermal stability (DSC)

The test item in closed glass crucibles showed three exothermic effects in the temperature ranges of 100 – 245 °C, 245 – 270 °C and 270 – 480 °C with a maximum overall decomposition energy of approx. -300 J/g.

The test item in closed gold plated stainless steel crucible showed four exothermic effects in the temperature ranges of 120 – 165 °C, 165 – 240 °C, 240 – 300 °C and 360 – 500 °C with a maximum overall decomposition energy of approx. -280 J/g.

Table 1:    Results of the DSC-measurements

No.	Crucible material	Sample weight / mg	Start of effect / °C	Energy / J/g	Remark
PN14833	Glass	7.15	100 245 280	-90 (exothermic) -20 (exothermic) -190 (exothermic)
PN14840	Glass	6.11	100 245 270	-130 (exothermic) -10 (exothermic) -110 (exothermic)
PN14617	Gold plated stainless steel	7.42	120 165 240 360	-10 (exothermic) -120 (exothermic) -60 (exothermic) -90 (exothermic)

Due to the decomposition energy being below the threshold of -500 J/g, further tests for explosive properties did not have to be performed.

Applicant's summary and conclusion

Interpretation of results:

GHS criteria not met

Conclusions:

In the DSC-measurements in closed glass crucibles the test item Leuco Sulphur Black 11 showed three exothermic effects in the temperature ranges of 100 – 245 °C, 245 – 270 °C and 270 – 480 °C with a maximum overall decomposition energy of approx. -300 J/g. The test item in closed gold plated stainless steel crucible showed four exothermic effects in the temperature ranges of 120 – 165 °C, 165 – 240 °C, 240 – 300 °C and 360 – 500 °C with a maximum overall decomposition energy of approx. -280 J/g. 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.

According to the results of the test on thermal stability, the test item is classified as following:
UN Transport Regulation: The test item does not have to be classified as explosive substance in class 1 according to the UN Transport Regulation.
GHS (CLP Regulation EC 1272/2008: Annex 1: 2.1): The test item does not have to be classified as explosive substance according to GHS or CLP Regulation EC 1272/2008 Annex 1: 2.1, respectively.
Regulation EC 440/2008 and Directive 67/548/EEC: The test item has no explosive properties according to the Regulation EC No. 440/2008 Method A.14. Explosive Properties.

Executive summary:

Summary

In the DSC-measurements in closed glass crucibles the test item Leuco Sulphur Black 11 showed three exothermic effects in the temperature ranges of 100 – 245 °C, 245 – 270 °C and 270 – 480 °C with a maximum overall decomposition energy of approx. -300 J/g. The test item in closed gold plated stainless steel crucible showed four exothermic effects in the temperature ranges of 120 – 165 °C, 165 – 240 °C, 240 – 300 °C and 360 – 500 °C with a maximum overall decomposition energy of approx. -280 J/g.

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

According to the results of the test on thermal stability, the test item is classified as following:

UN Transport Regulation: The test item does not have to be classified as explosive substance in class 1 according to the UN Transport Regulation.

GHS (CLP Regulation EC 1272/2008: Annex 1: 2.1): The test item does not have to be classified as explosive substance according to GHS or CLP Regulation EC 1272/2008 Annex 1: 2.1, respectively.

Regulation EC 440/2008 and Directive 67/548/EEC: The test item has no explosive properties according to the Regulation EC No. 440/2008 Method A.14. Explosive Properties.