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Description of key information

Flammability: not classified

Key value for chemical safety assessment

not classified

Additional information

The requirement to test the substance for pyrophoricity and flammability in contact with water was waived in accordance with Section 1 of REACH Annex XI, because there is no indication on the basis of structure and experience in use and handling that the substance is pyrophoric (flammable in contact with air) or flammable in contact with water.

In a readily combustible solid study in accordance with UN Test N.1 Method and in compliance with GLP, the substance was observed not to ignite nor propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 2 minute test period. Also, in a combustibility study in accordance with the principle of VDI2263 Part 1, the substance as received melts and does not catch fire, hence a combustibility rating of 1 was assigned. The results are considered to be reliable and are used as weight of evidence that the substance is not flammable.

A Minimum Ignition Energy (MIE) of 1-3 mJ was determined for the milled sample (<63 µm, not as supplied) of  the substance using a relevant test method in accordance with BS EN 13821:2002.

Justification for classification or non-classification

The substance is not classified for flammability as no ignition was observed during the study conducted in accordance with UN N.1 Test Method and in a combustion study conducted according to the principle of VDI2263 Part 1.