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

Auto flammability

Administrative data

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2018-02-07 to 2018-02-08

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Cross-reference

Reason / purpose for cross-reference:

reference to other study

Reference

Endpoint:

self-heating substances / mixtures

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2018-07-20 to 2018-07-30

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Reason / purpose for cross-reference:

reference to other study

Qualifier:

according to guideline

Guideline:

UN Manual of Tests and Criteria: Test N.4 (Test method for self-heating substances)

Version / remarks:

2015

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Test procedure:

100 mm sample cube at 140°C

Max. temp. reached:

370

Induction time (h):

36

Result:

positive outcome (effect observed)

Key result

Test procedure:

25 mm sample cube at 140°C

Induction time (h):

24

Result:

negative outcome (no effect observed)

Key result

Test procedure:

100 mm sample cube at 120°C

Induction time (h):

24

Result:

negative outcome (no effect observed)

In the Grewer oven the test item showed a self-ignition temperature of 170 °C (see Key study reported under 'Auto flammability' endpoint.

Following this screening test an additional test has been performed to investigate the self heating properties of the substance:

The test in the 1 L wire basket at 140 °C showed a self-ignition of the test item with a temperature increase of 230 °C above storage temperature within 24 hours.

The test in the 15.625 mL wire basket at 140 °C showed no self-ignition of the test item within 24 hours.

The test in the 1 L wire basket at 120 °C showed no self-ignition of the test item within 24 hours.

Conclusions:

According to the results of the tests on the self-ignition in the Bowes-Cameron-Cage Test (UN-Test N.4) the test item is classified as follows under the UN Transport Regulation: The test item does not have to be classified as self-heating substance in class 4, division 4.2 according to the UN Transport Regulation, if the test item ishandled in containerswith a volume of ≤ 3 m³.
If the test item is handled in containers > 3 m³ it is classified as self-heating substance in class 4, division 4.2 and assigned to packing group III.

GHS / CLP Regulation EC 1272/2008 Annex 1: 2.11: The test item does not have to be classified as self-heating substance according to GHS/CLP Regulation EC 1272/2008 Annex 1: 2.11, respectively, if the test item is handled in containers with a volume of< 3 m³. If the test item is handled in containers > 3 m³, it must be classified as a self-heating substance and assigned to category 2.

Executive summary:

In the Grewer oven the test item showed a self-ignition temperature of 170 °C. Therefore, self-heating properties of the test item were determined according to UN Test N.4 by Bowes-Cameron-Cage test.

The test in the 1 L wire basket at 140 °C showed a self-ignition of the test item with a temperature increase of 230 °C above storage temperature within 24 hours. The test in the 15.625 mL wire basket at 140 °C showed no self-ignition of the test item within 24 hours. The test in the 1 L wire basket at 120 °C showed no self-ignition of the test item within 24 hours.

According to the results of the tests on the self-ignition in theBowes-Cameron-Cage Test (UN-Test N.4)the test itemis classified as follows:

UN Transport Regulation: The test item does not have to be classified as self-heating substance in class 4, division 4.2 according to the UN Transport Regulation,if the test item is handled in containers with a volume of ≤ 3 m³.

If the test item is handled in containers > 3 m³ it is classified as self-heating substance in class 4, division 4.2 and assigned to packing group III.

GHS / CLP Regulation EC 1272/2008 Annex 1: 2.11: The test item does not have to be classified as self-heating substance according to GHS/CLP Regulation EC 1272/2008 Annex 1: 2.11, respectively, if the test item is handled in containers with a volume of < 3 m³.

If the test item is handled in containers > 3 m³, it must be classified as a self-heating substance and assigned to category 2.

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:

other: VDI 2263 (1990), sheet 1, Grewer Oven

Version / remarks:

1990

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

other: Recommendations on the TRANSPORT OF DANGEROUS GOODS: Manual of Tests and Criteria, 6th edition, New York and Geneva, 2015: Appendix 6 Screening Procedures, Division 4.2: Substances which may be liable to spontaneous combustion

Version / remarks:

2015

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

Relative self-ignition temperature (solids)

Key result

Relative self-ignition temperature:

170 °C

Remarks on result:

other: Onset self- ignition

Any other information on results incl. tables

In the investigation of self-heating in the Grewer Oven for the pure test item, a first exothermic effect was detected starting at 170 °C, which led to a maximum temperature of 300 °C and a second exothermic effect starting at 250 °C, which led to a maximum temperature of 460 °C. After the measurement a black residue remained in the basket.

Applicant's summary and conclusion

Conclusions:

The pure test item indicated a self-heating at atmospheric pressure starting at a temperature of approx. 170 °C, which led to a maximum temperature of 460 °C. Based on this preliminary test, additional studies to assess the self-heating properties have been evaluated (see end point flammability-self heating)

Executive summary:

The objective of this study was the determination of the relative self-ignition temperature of the test item according to VDI 2263, sheet 1 and UN Class 4, Division 4.2. The pure test item indicated a self-heating at atmospheric pressure starting at a temperature of approx. 170 °C, which led to a maximum temperature of 460 °C.

Additional testing has been performed (see end point flammability- self heating) which confirmed that the substance does not have to be classified as self heating substance according to the CLP classification.