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Physical & Chemical properties

Flammability

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Reference
Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
from 10 Jun 2005 to 13 Oct 2005
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Qualifier:
according to
Guideline:
EU Method A.10 (Flammability (Solids))
Version / remarks:
Cited as Directive 92/69/EEC, A.10
Deviations:
yes
Remarks:
Ignition source: use of a platinum wire heated by electrical power instead a direct flame. This modification has no effect on the conclusion.
GLP compliance:
yes
Key result
Test procedure:
burning rate test over 100 mm length
Remarks on result:
other: substance does not ignite and propagate combustion along 100 mm of the powder train within the 2 minutes test period

The test item didn't burn. No further testing was required.

Interpretation of results:
not classified based on GHS criteria
Conclusions:
Cerium dioxide is not highly flammable under the conditions of test.
Executive summary:

The determination of the flammability of cerium dioxide was performed using a powder train about 250 mm long, according to EU Method A10.

The test item didn't burn. No further testing was required. Cerium dioxide is not highly flammable under the conditions of test.

Description of key information

Cerium dioxide is not highly flammable under the conditions of test.

Key value for chemical safety assessment

Flammability:
non flammable

Additional information

Flammability: The existing data concerns the bulk form. One experimental study, scored as Klimisch 1, is available (Cerutti M., 2005) and selected as a key study.

Pyrophoricity and flammability in contact with water: Based on the absence of structural alerts and on the knowledge from use and handling, it is unlikely that cerium dioxide shows such properties.

Justification for classification or non-classification

Based on the above data, cerium dioxide does not require a classification regarding its flammable properties, neither under DSD, nor under CLP.