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Physical & Chemical properties

Flammability

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Description of key information

Non flammable

Key value for chemical safety assessment

Flammability:
non flammable

Additional information

The test substance was tested for flammability potential according to the EU method A.10.

The screening test produced a negative result. Thus, no further testing is necessary.

Therefore, the test item is considered as not flammable.

Justification for classification or non-classification

According to Regulation CLP 1272/2008, powdered, granular or pasty substances or mixtures shall be classified as readily combustible solids when the time of burning of one or more of the test runs, performed in accordance with the test method described in Part III, sub-section 33.2.1, of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, is less than 4 seconds or the rate of burning is more than 2,2 mm/s.

Criteria for flammable solids are:

Category 1:Burning rate test

Substances and mixtures other than metal powders:

(a) wetted zone does not stop fire and

(b) burning time < 45 seconds or burning rate > 2,2 mm/s

Category 2:Burning rate test

Substances and mixtures other than metal powders:

(a) wetted zone stops the fire for at least 4 minutes and

(b) burning time < 45 seconds or burning rate > 2,2 mm/s

In many cases, a simple screening test (see Section 2.7.4.4) can be used to determine whether a solid should be classified as flammable.

A screening test was performed on the test item: it changed its colour to black under formation of sparks and burned up in the red heat with a yellow flame. However, the formation of sparks in the flame of the burner does not indicate flammability. The sparks are caused by the flame of the burner. The gas flow “blows” fine particals of the test substances away which burn immediately in the flame, producing sparks.

The screening test produced a negative result, no further testing is necessary. The substance is not classified as flammable.