2,2'-[[3-chloro-4-[[4-[[2-(sulphooxy)ethyl]sulphonyl]phenyl]azo]phenyl]imino]bisethyl bis(hydrogen sulphate), potassium sodium salt

Explosiveness

Administrative data

Endpoint:

explosive properties of explosives

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2018-05-08 to 2018-05-14

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Cross-reference

Reason / purpose for cross-reference:

reference to same study

Reference

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2018-05-08 to 2018-05-14

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:

UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Test procedure:

burning rate test: preliminary screening test

Remarks on result:

substance does not ignite and propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 2 minutes test period

The sample was observed to discolour to black, expand and then glow red. There was no spreading of this glowing and no flames were observed therefore no further testing was required.

Interpretation of results:

not classified based on GHS criteria

Conclusions:

The test substance is not a readily combustible substance, hence it is a non flammable solid.

Executive summary:

The test is designed to measure the rate at which combustion moves away from an ignition source, along a train of powder. The test is conducted according to the method described in the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, Test N.1.

The sample was observed to discolour to black, expand and then glow red. There was no spreading of this glowing and no flames were observed therefore no further testing was required. Therefore, the test substance is not a readily combustible substance of Division 4.1. (non flammable solid).

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Report date:

2018

Materials and methods

Test guideline

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

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Test material

Test material information

Constituent 1

Reference substance name:

2,2'-[[3-chloro-4-[[4-[[2-(sulphooxy)ethyl]sulphonyl]phenyl]azo]phenyl]imino]bisethyl bis(hydrogen sulphate), potassium sodium salt

EC Number:

287-719-5

EC Name:

2,2'-[[3-chloro-4-[[4-[[2-(sulphooxy)ethyl]sulphonyl]phenyl]azo]phenyl]imino]bisethyl bis(hydrogen sulphate), potassium sodium salt

Cas Number:

85567-07-3

Molecular formula:

C36H42Cl2KN6NaO28S8

IUPAC Name:

2,2'-[[3-chloro-4-[[4-[[2-(sulphooxy)ethyl]sulphonyl]phenyl]azo]phenyl]imino]bisethyl bis(hydrogen sulphate), potassium sodium salt

Test material form:

solid

Details on test material:

Batch: 1283067001

Results and discussion

Results of test series for explosives

Results of test series for explosives 1

Key result

Test series:

UN Test series 2

Method:

UN Test 2 (b): Koenen test

Parameter:

limiting diameter (mm)

Value:

1

Result:

result is considered "-" (negative)

Results of test series for explosives 2

Key result

Test series:

UN Test series 2

Method:

UN Test 2 (c) (i): Time/pressure test

Parameter:

other: Maximum pressure (kPa)

Value:

331.6

Result:

result is considered "-" (negative)

Remarks on result:

other: A pressure rise to 2070 kPa was not achieved in any of the three tests

Any other information on results incl. tables

UN gap test 2(a):

The available information on exothermic decomposition energy shows that no further testing is needed. The exothermic decomposition energy as measured in a thermal stability test using DSC (ref. Smeykal, 2018 - supporting study in this dossier) is -500 J/g and -530 J/g. Since this is below -800 J/g, further testing is not needed in accordance with UN Manual of Tests and Criteria.

Koenen Tube Test results: 

Sample mass (g)	Orifice diameter (mm)	Time to first ignition (s)	Total test time (s)	Fragmentation type	Result
18.30	5	23	72	D	No explosion
18.30	3	28	63	D	No explosion
18.30	2	18	61	D	No explosion
18.30	1	16	61	D	No explosion
18.30	1	19	60	D	No explosion
18.30	1	19	59	D	No explosion

 

Time / pressure test results:

Test	Sample mass (g)	Maximum pressure (kPa)	Time from 690 to 2070 kPa (ms)
1	5.01	310.3	N/A
2	5.05	331.6	N/A
3	5.00	274.4	N/A

Applicant's summary and conclusion

Interpretation of results:

GHS criteria not met

Conclusions:

Negative results were observed in Koenen tube test (UN test series 2(b) and time/pressure test (UN test series 2(c)). It is therefore concluded that the substance is not explosive.

Executive summary:

Koenen Tube Test and Time / Pressure Test were performed to measure the sensitiveness of notified substances to the effect of intense heat when under partial and defined confinement, and to determine the effects of igniting a substance under confinement in order to determine if the ignition leads to a deflagration with explosive violence at pressures which can be attained with substances in normal commercial packages. The test is conducted according to the method described in the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, Test 2 (b) and 2 (c) (i).

In the Koenen Tube Test, the sample has been shown to have a limiting diameter of < 1 mm. The test result is therefore considered negative (-). In the time / pressure test, a pressure rise to 2070 kPa was not achieved in any of the three tests. The test result is therefore considered negative (-) and the substance to show no deflagration. The UN gap test according to UN test series 2(a) was not performed because the exothermic decomposition energy of the test item (i.e. 500 and 530 J/g) is less than 800 J/g (see Supporting study - Smeykal 2017).

Based on the available information, it is concluded that the substance is not explosive.