Reaction mass of [5-methyl-2-[[4-(4-methylanilino)-9,10-dioxo-1-anthryl]amino]phenyl]sulfonyloxypotassium and [5-methyl-2-[[4-(4-methyl-2-potassiooxysulfonyl-anilino)-9,10-dioxo-1-anthryl]amino]phenyl]sulfonyloxypotassium

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 17 July to 8 August, 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

test procedure in accordance with generally accepted scientific standards and described in sufficient detail

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

Qualifier:

according to guideline

Guideline:

other: VDI 2263 Sheet 1 Grewer Oven

Version / remarks:

adopted in 1990

GLP compliance:

yes (incl. QA statement)

Relative self-ignition temperature:

240 - 290 °C

Remarks on result:

preliminary test

Starting at a temperature of approx. 240 °C the test item showed a slight self-heating, which leaded to a maximum temperature of 290 °C. After the measurement a black residue remained in the basket.

For the test item in mixture with Kieselguhr no endothermic or exothermic effects were detected.

Results of the screening test for self-ignition in the Grewer Oven

Experiment	Onset self-ignition [°C]	Maximum temperature [°C]
Pure test item	240	290
Test item in mixture	--	--
with Kieselguhr (1:1)

Conclusions:

Non-self-heating

Executive summary:

The self-ignition behavior of the product is determined in the Grewer Oven according to VDI 2263, sheet 1 and with respect to the classification procedures of both the UN Transport Regulation (Class 4, Division 4.2) and GHS as specified in EC 1272/2008 (CLP Regulation, Annex 1: 2.11), respectively. The Grewer Oven test can be used as screening test for the classification as self-heating substance “Substances liable to spontaneous combustion” (UN Transport Regulation) and EC 1272/2008 (CLP Regulation). For this purpose, a safety margin of 80 K above the reference temperature for a sample volume of 1 l in the UN Test N.4 has to be applied.

Starting at a temperature of approx. 240 °C the test item showed a slight self-heating, which leaded to a maximum temperature of 290 °C. After the measurement a black residue remained in the basket.

For the test item in mixture with Kieselguhr no endothermic or exothermic effects were detected.

Conclusion

Non-self-heating

Description of key information

Non-self-heating

Additional information

According to the CLP Regulation (EC) No 1272/2008, 2.11 section, a self-heating substance or mixture is a liquid or solid substance or mixture, other than a pyrophoric liquid or solid, which, by reaction with air and without energy supply, is liable to self-heat.

The classification procedure for self-heating substances or mixtures need not be applied if the results of a screening test can be adequately correlated with the classification test and an appropriate safety margin is applied. An example of screening test is the Grewer Oven test (VDI guideline 2263, Part 1, 1990, Test methods for the Determination of the Safety Characteristics of Dusts) with an onset temperature 80 K above the reference temperature for a volume of 1 l.

On the basis of the Grewer Oven test results, taken into consideration the safety margin above mentioned, the substance does not meet the criteria to be classified as self-heating substance either in class 4, division 4.2 according to the UN Transport Regulation, neither in accordance to the CLP Regulation (EC) No 1272/2008.