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Reference
Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
December 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
other: United Nations Recommendations on the Transport of Dangerous Goods - Manual of Tests and Criteria Sixth revised edition (2015) - Method N.4 (Part III, Section 33.3.1.6) EC No. 1272/2008
Deviations:
no
GLP compliance:
no
Key result
Remarks on result:
no self ignition observed under the test conditions
Remarks:
No self-ignition temperature of the test item was recorded until 140°C and the temperature of the sample did not exceed the oven temperature by 60 °C (corrected value).
Conclusions:
No self-ignition temperature of the test item was recorded until 140°C and the temperature of the sample did not exceed the oven temperature by 60 °C (corrected value). The test item was not classified as a self-heating substance. No particular hazard is anticipated in normal conditions of storage.
Executive summary:

The self-heating temperature of the test substance was measured according to Method N.4 (Part III, Section 33.3.1.6 ) (United Nations Recommendations on the Transport of Dangerous Goods - Manual of Tests and Criteria - Sixth revised edition (2015)).

The container ( 25 mm cube sample) of the sample was housed in the cover and hung at the centre of the oven. The oven temperature was raised to 140 °C and kept there for 24 hours. The temperature of the sample and of the oven was recorded continuously. No self-ignition temperature of the test item was recorded until 140 °C and the temperature of the sample did not exceed the oven temperature by 60 °C. After the test, the test item was not classified as a self-heating substance and the test was stopped.

Description of key information

No particular hazard is anticipated in normal conditions of storage. No self-ignition temperature of the test item was recorded until 140°C and the temperature of the sample did not exceed the oven temperature by 60 °C (corrected value) according to Method N.4 (Part III, Section 33.3.1.6).

Key value for chemical safety assessment

Additional information

A fully reliable experimental study, conducted according to a recognized method (as reported in Method N.4 (Part III, Section 33.3.1.6), is available. No self-ignition temperature of the test item was recorded until 140°C and the temperature of the sample did not exceed the oven temperature by 60 °C (corrected value)according to Method N.4 (Part III, Section 33.3.1.6).

It is considered as a key study. The result is retained as key data.

This parameter is not relevant for classification, however the information is useful regarding potential additional fire hazard.

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