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Physical & Chemical properties

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Reference
Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1993-11-24 to 1994-09-26
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)
Version / remarks:
EEC 92/69
Deviations:
no
GLP compliance:
yes
Specific details on test material used for the study:
Analytical purity: >= 99.65 %
Lot/batch No.: 93.166
Key result
Relative self-ignition temperature:
256 °C
Remarks on result:
other:
Remarks:
at atm. press. of 101.31 kPa

Results:

Self-ignition of the test article started about 243 °C; a sharp temperature rise was noted at 256 °C. The second test confirmed the results of the first one (about 260 °C).

Conclusions:
HAT ISO was tested for self-ignition according to EU Guideline A 16 - Relative self-ignition temperature of solids. The self-ignition temperature of HAT ISO was determined as 256 °C. No classification and labelling is required according to Regulation 1272/2008/EEC (CLP) criteria.
Executive summary:

HAT ISO was tested for self-ignition according to EU Guideline A 16 - Relative self-ignition temperature of solids. About 4 g of test article as supplied were placed in the oven at room temperature. The oven temperature was then increased at the rate of 0.5 °C/minute up to 420 °C. The temperature of the oven and of the etst article were recorded, and the temperature/time curve was printed. The test was performed twice (with 4.02 and 3.33 g of test article. Self-ignition temperature of the test article was determined as the very sharp temperature rise of the sample above the oven temperature.

Results:

Room temperature: 13 °C;

Self-ignition of the test article started about 243 °C; a sharp temperature rise was noted at 256 °C. The second test confirmed the results of the first one (about 260 °C).

Description of key information

HAT ISO was tested for self-ignition according to EU Guideline A.16, Relative self-ignition temperature of solids. About 4 g of test article as supplied were placed in the oven at room temperature. The oven temperature was then increased at the rate of 0.5 °C/minute up to 420 °C. The temperature of the oven and of the test article were recorded, and the temperature/time curve was printed. The test was performed twice (with 4.02 and 3.33 g of test article).
Self-ignition temperature of the test article was determined as the very sharp temperature rise of the sample above the oven temperature.
Results:
Self-ignition of the test article started about 243 °C; a sharp temperature rise was noted at 256 °C. The second test confirmed the results of the first one (ca. 260 °C).

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
529.2 K

Additional information