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Physical & Chemical properties

Auto flammability

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Reference
Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
25.02.2019 - 26.02.2019
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.16 (Relative Self-Ignition Temperature for Solids)
GLP compliance:
yes (incl. QA statement)
Specific details on test material used for the study:
The sample was placed on a rotary evaporator at 40°C until no more water evaporated; the sample was spread onto trays and placed in an oven at 40°C for approximately 6 days with frequent agitation. The partially wet sample was removed from the trays and frozen. Whilst frozen the sample was ground to a fine powder then spread on trays and placed back into the oven at 40°C for 24 hours.
Key result
Relative self-ignition temperature:
325 °C
Conclusions:
Relative Self Ignition Temperature: 325°C
Executive summary:

On completion of testing a green and black solid remained. A minor endothermic event was observed at approximately 60°C. This was followed by a small exothermic event with an approximate onset of 118°C. A major exotherm was then observed at 290°C, with the sample temperature peaking at 448°C. The oven temperature when the sample temperature reached 400°C was 325°C.

Description of key information

Relative Self Ignition Temperature: 325°C

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
325 °C

Additional information