Disodium 3-[(5-chloro-2-phenoxyphenyl)azo]-4-hydroxy-5-[[(p-tolyl)sulphonyl]amino]naphthalene-2,7-disulphonate

Flammability

Link to relevant study record(s)

Reference

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

The 1th of August, 2013

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.10 (Flammability (Solids))

Principles of method if other than guideline:

The test substance is formed into an unbroken strip or powder train about 250 mm long and a preliminary screening test is performed to determine if, on ignition by a gas flame, propagation by burning with flame or smouldering occurs.If propagation over 200 mm of the train occurs within a specified time (less than 4 minutes) then a full test programme to determine the burning rate is carried out.If the substance does not ignite and propagate combustion neither by burning with flame nor by smouldering along 200 mm of the powder train within the 4 minutes test period, then the test substance should not be considered as flammable and no further testing is required.Preliminary test:The test substance was formed into an unbroken strip about 250 mm long by 20 mm wide by 10 mm high on a non-combustible, non-porous and low heat-conducting base plate.A hot flame from a gas burner (with minimum diameter 5 mm) was applied to one end of the powder train. The flame was taken away after 2 minutes. Test substance did not catch fire. Under carbonized surface a red-hot matter glowed. However no propagation of the red-hot zone through the shape of the strip was observed.

GLP compliance:

no

Test procedure:

burning time (test type not further specified)

Remarks:

or specified in description of method (migrated information)

Remarks on result:

other: Nor flammable

The substance did not propagate burning of a 200 mm length of the strip in less than four minutes; burning rate test did not need to be performed. The substance is not classified as Flammable.

Interpretation of results:

non flammable

Conclusions:

The substance did not propagate burning of a 200 mm length of the strip in less than four minutes; burning rate test did not need to be performed. The substance is not classified as Flammable.

Executive summary:

Flammability was assessed by EU Method A.10. described in the Regulation n. 440/2008.

The tested substance is not flammable.

Description of key information

Non flammable

Key value for chemical safety assessment

Flammability:

non flammable

Additional information

Flammability on the substance to be registered was assessed by EU Method A.10. described in the Regulation n. 440/2008.

The tested substance is not flammable.

Furthermore evidences connected to the long experience in handling of the substance confirms that no flammable properties have never been observed and reported up to now in the usual conditions of production, stock, transport and use.

Justification for classification or non-classification

According to the 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

Flammability on the substance to be registered was assessed by EU Method A.10 described in Regulation n. 440/2008. The tested substance is not flammable.