Phenol, 4-amino-, reaction products with aniline, 4-methyl-1,3-benzenediamine, p-phenylenediamine, sodium sulfide (Na2S) and sulfur

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:

2017-07-19 - 2017-07-20

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

other: Recommendations of the TRANSPORT OF DANGEROUS GOODS: Manual of Tests and Criteria

Version / remarks:

Revision 6 (2015)

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: VDI 2263, sheet 1, Grewer Oven

Version / remarks:

1990

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Relative self-ignition temperature:

210 °C

 Self-ignition in the Grewer-Oven

In the investigation of self-ignition in the Grewer oven for the pure test item, the temperature of the test item exceeded the temperature of the reference material at approx. 110 °C. From approx. 210 °C an exothermic process was detected, that led to a maximum temperature of 480 °C.

The pure test item indicated self-ignition from a temperature of just above 210 °C.

For the test item in mixture with Kieselguhr no self-ignition was observed.

Table 1 summarizes the results of the Grewer-Oven experiment.

Table1: Results of the screening test for self-ignition in the Gewer-Oven

Experiment	Onset self ignition / °C	Maximum temperature / °C
Pure test item	Approx. 210	480	Figure 4,Figure 5
Test item in mixture with Kieselguhr (1:1)	-	-

Conclusions:

Instead of the test on the relative self-ignition temperature according EC A.16. the test for self-heating substances according to Recommendations on the TRANSPORT OF DANGEROUS GOODS: Manual of Tests and Criteria: UN Test N.4 and the screening test in the Grewer oven according to VDI 2263, sheet 1 were performed, since these are now recommended for evaluation and classification.

The pure test item Leuco Sulphur Green 16 indicated self-ignition at atmospheric pressure starting at a temperature of 210 °C. Due to the self-ignition temperature being below 220 °C and due to the fact that the temperature of the test item exceeded the temperature of the reference material at approx. 110 °C in the Grewer Oven, self-heating at 140°C cannot be excluded.
On the basis of the results of the tests on the self-ignition in the Grewer Oven the test item cannot be classified. Further tests are necessary for a classification.

Executive summary:

Summary

The pure test item Leuco Sulphur Green 16 indicated self-ignition at atmospheric pressure starting at a temperature of 210 °C. Due to the self-ignition temperature being below 220 °C and due to the fact that the temperature of the test item exceeded the temperature of the reference material at approx. 110 °C in the Grewer Oven, self-heating at 140°C cannot be excluded.

On the basis of the results of the tests on theself-ignition in theGrewer Oventhe test item cannot be classified. Further tests are necessary for a classification.

Description of key information

The test item Leuco Sulphur Green 16 indicated self-ignition at atmospheric pressure starting at a temperature of 210 °C. Due to the self-ignition temperature being below 220 °C and due to the fact that the temperature of the test item exceeded the temperature of the reference material at approx. 110 °C in the Grewer Oven, self-heating at 140°C cannot be excluded.

On the basis of the results of the tests on the self-ignition in the Grewer Oven the test item cannot be classified. Further tests are necessary for a classification.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

210 °C