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Reference
Endpoint:
relative self-ignition temperature (solids)
Type of information:
read-across based on grouping of substances (category approach)
Adequacy of study:
key study
Study period:
From 23 April, 2008 to 06 May, 2008
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
KL2 due to RA
Justification for type of information:
Refer to the Quaternary ammonium salts (QAS) category or section 13 of IUCLID for details on the category justification.
Qualifier:
according to
Guideline:
EU Method A.16 (Relative Self-Ignition Temperature for Solids)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Key result
Relative self-ignition temperature:
> 405 °C
Remarks on result:
other: No self-ignition temperature was observed up to the maximum test temperature of 405°C.
Remarks:
at atm. press. of 1.0 atm

The test substance showed a small exothermic reaction in the temperature range of 175 - 230°C and no further exothermal reaction of the test substance was observed up to a maximum temperature of 405°C.

Two DSC measurements in closed glass crucibles with the test substance showed endothermic effects in the temperature range 35 - 80°C, 225 - 270°C (double peak) and 305 - 320°C and no exothermal effect up to the maximum test temperature of 400°C.

Conclusions:
Based on the results of the read across study, no self-ignition temperature is expected for the test substance.
Executive summary:

A study was conducted to determine the self-ignition temperature of the read across substance, Coco TMAC (99.6% active), according to EU Method A.16 and in compliance with GLP. 8 cm3 (2.6 g) of the read across substance was placed in an oven at 23°C. The temperature-time curve relating to condition in the centre of the sample was recorded while the temperature of the oven was increased to 400°C at a rate of 0.5°C/minute. Under the study conditions, no self-ignition temperature was observed up to the maximum temperature of 405°C (Smeykal, 2008). Based on the results of the read across study, a similar absence of self-ignition is expected for the test substance.

Description of key information

The self-ignition temperature of the read across substance, Coco TMAC was determined according to EU Method A.16 (Smeykal, 2008). 

Key value for chemical safety assessment

Additional information

No self-ignition up to 405°C