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Link to relevant study record(s)

Reference
Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
16 November 2007 - 23 February 2008
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.10 (Flammability (Solids))
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Key result
Test procedure:
burning rate test: preliminary screening test
Burning time:
34 min
Remarks on result:
substance does not ignite and propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 2 minutes test period
Interpretation of results:
GHS criteria not met
Conclusions:
The flame of a gas burner could ignite the test substance pile. The test substance burned with a yellow flame, developed smoke and turned into a grey/black ash residue. After removal of the ignition source, propagation of combustion by smouldering was observed. The burning time over a distance of 200 mm was 34 minutes and 19 seconds.

Because no burning with flame or smouldering over 200 mm within 4 minutes was observed, R507-2 is considered not highly flammable.
Executive summary:

The flame of a gas burner could ignite the test substance pile. The test substance burned with a yellow flame, developed smoke and turned into a grey/black ash residue. After removal of the ignition source, propagation of combustion by smouldering was observed. The burning time over a distance of 200 mm was 34 minutes and 19 seconds.

Because no burning with flame or smouldering over 200 mm within 4 minutes was observed, R507-2 is considered not highly flammable.

Description of key information

The flame of a gas burner could ignite the test substance pile. The test substance burned with a yellow flame, developed smoke and turned into a grey/black ash residue. After removal of the ignition source, propagation of combustion by smouldering was observed. The burning time over a distance of 200 mm was 34 minutes and 19 seconds.

Because no burning with flame or smouldering over 200 mm within 4 minutes was observed, R507-2 is considered not highly flammable.

Key value for chemical safety assessment

Flammability:
not classified

Additional information

Justification for classification or non-classification