N,N''-(methylenedi-4,1-phenylene)bis[N'-octyl]urea

Flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

November 26, 2002

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.10 (Flammability (Solids))

Version / remarks:

(1992)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Preliminary test # 1

The test item melted, producing a pasty yellowish liquid that ignited. The flame propagated on 6 cm in 4 minutes (and on 20 cm in 16 minutes and 40 seconds). Then, the liquid blackened forming a crust.

Preliminary test #2

Same observations as in test #1 but the flame propagated on 4 cm in 4 minutes (and on 20 cm in approximately 17 minutes).

Main test

As the test item did not propagate burning over a 20 cm length of the powder train in less than 4 minutes (but in approx. 16 minutes), a burning rate test as described in EU Method A.10 was not carried out.

Interpretation of results:

other: not highly flammable

Conclusions:

The preliminary test according to EU Method A 10 "Flammability (solids)" of Directive 92/69/EEC was performed and the test substance was found to be not "highly flammable" according to the criteria of the directive.

Reference 2

Endpoint:

substances / mixtures which in contact with water emit flammable gases

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

other:

Reference 3

Endpoint:

pyrophoric solids

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

other:

Description of key information

The substance is non flammable in contact with water and not pyrophoric.The preliminary test according to method A 10 "Flammability (solids)" of Directive 92/69/EEC was performed and the substance was found to be not "highly flammable" according to the criteria of the directive.

Key value for chemical safety assessment

Flammability:

non flammable

Additional information

The preliminary test according to method A 10 "Flammability (solids)" of Directive 92/69/EEC was performed and the test substance was found to be not "highly flammable" according to the criteria of the directive. Based on the evaluation of the structural formula of the substance (absence of structural alerts) and experience with handling during testing it was concluded that the test substance is incapable of developing a dangerous amount of (flammable) gas when coming into contact with air, damp air or water and does not ignite spontaneously when coming into contact with air. The test substance is thus non flammable in contact with water and not pyrophoric.

No UN test is available. However, as the substance did not propagate burning of a 200 mm length of the powder train in less than 2 minutes, the UN test N.1 does not need to be carried out for compliance with the CLP Regulation. Also for compliance with the CLP Regulation, the preliminary screening test, which is similar as the EU Method A.10, is sufficient.

Justification for classification or non-classification

Based on the results of the preliminary test according to method EC A.10 (and UN test N.1), as the substance is non flammable in contact with water and is not pyrophoric, the substance (a solid) does not need to be classified for flammability in accordance with the CLP Regulation.