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Reference
Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-09-31 to 2017-09-01
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
other: UN Recommendations on the TRANSPORT OF DANGEROUS GOODS: Manual of Tests and Criteria, Rev. 6 and UN-Model Regulations, Rev. 19
Version / remarks:
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)
Remarks:
2017-02-28
Relative self-ignition temperature:
> 420 °C
Remarks on result:
no self-ignition observed up to the melting point

In the investigation of self-ignition in the Grewer Oven for the pure test item shows no self-ignition up to the maximum test temperature of 420 °C. After the measurement the basket was empty.

For the test item in mixture with Kieselguhr shows an endothermic effect at approx. 195 °C (melting) and an small exothermic effect started at 280 °C and lead to the maximum temperature of 310 °C (reference temperature 295 °C). After this the temperature decreased to the reference temperature and no significant temperature increase up to the maximum temperature of 420 °C was observed. After approx. five hours at 420 °C an exothermic effect started and lead to a maximum temperature of 660 °C.

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

Experiment Start of effects / °C Maximum temperature / °C
Pure test item --- 420
Test item in mixture with Kieselguhr (1:1) 280
420
310
660
Conclusions:
The pure test item N-[2-(4-oxo-4H-3,1-benzoxazin-2-yl)phenyl]naphthalene-2-sulphonamide indicated no self-ignition up to the maximum test temperature of 420 °C.

On the basis of the results of the tests on the self-ignition in the Grewer Oven the test item is classified as follows:
UN Transport Regulation: The test item has not to be classified as self-heating substance in class 4, division 4.2 according to the UN Transport Regulation.

GHS / CLP Regulation EC 1272/2008 Annex 1: 2.11: The test item has not to be classified as self-heating substance according to GHS/CLP Regulation EC 1272/2008 Annex 1, Section 2.11.

Description of key information

The pure test item N-[2-(4-oxo-4H-3,1-benzoxazin-2-yl)phenyl]naphthalene-2-sulphonamide indicated no self-ignition up to the maximum test temperature of 420 °C

Key value for chemical safety assessment

Additional information

The pure test item N-[2-(4-oxo-4H-3,1-benzoxazin-2-yl)phenyl]naphthalene-2-sulphonamide indicated no self-ignition up to the maximum test temperature of 420 °C.

On the basis of the results of the tests on the self-ignition in the Grewer Oven the test item is classified as follows:

UN Transport Regulation: The test item has not to be classified as self-heating substance in class 4, division 4.2 according to the UN Transport Regulation.

GHS / CLP Regulation EC 1272/2008 Annex 1: 2.11: The test item has not to be classified as self-heating substance according to GHS/CLP Regulation EC 1272/2008 Annex 1, Section 2.11.

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