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Reference
Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
25 November 2011
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
Modern study conducted under GLP to appropriate test guidelines.
Qualifier:
according to
Guideline:
EU Method A.16 (Relative Self-Ignition Temperature for Solids)
GLP compliance:
yes (incl. certificate)
Specific details on test material used for the study:
Biphenyl-4,4’-diol / CAS 92-88-6
Key result
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 an endothermic effect could be observed at a temperature of approx. 280°C, which can be assigned to the melting of the test item. The test item flew out of the basket and no exothermal effect could be observed up to a maximum temperature of 400°C.

For the test item in mixture with Kieselguhr a first exothermal process was determined at a temperature of 250°C leading to a maximum temperature of 340°C leading to a maximum temperature of >500°C.

Experiment

Onset Self ignition (C)

Maximum temperature (C)

Pure test item

-

-

Test item in mixture with Kieselguhr (1:1)

250

340

330

>500

Conclusions:
The pure product indicated an endothermic effect at a temperature of approximately 280°C at which point the test substance melted. The test item flew out of the basket and no self ignition could be observed up to a maximum temperature of 400°C. It can therefore be concluded that for this test item no self ignition temperature was found up to the melting of the test item.
Executive summary:

A self ignition test was performed using a Grewer oven according to EU method A.16. According to the EU method, A.16., the temperature of the oven at which the temperature of the test item reaches 400°C by self heating is regarded as the self-ignition temperature. For this test item no self ignition temperature was found up to the melting of the test item.

Description of key information

For this test item, no self ignition temperature was found up to the melting of the test item.

Key value for chemical safety assessment

Additional information