1,1'-methylenebis(4-isocyanatobenzene) and its oligomeric reaction products with butane-1,3-diol, 2,2'-oxydiethanol and propane-1,2-diol

Flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

substances / mixtures which in contact with water emit flammable gases

Type of information:

experimental study

Adequacy of study:

key study

Study period:

17/06/2009 - 26/06/2009

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.12 (Flammability (Contact with Water))

Deviations:

no

GLP compliance:

yes

Test procedure:

other: Run 1: Mass of sample: 10 g

Max. rate of gas release:

0.11 L/kg h

Identity of evolved gas:

other: flammability of generated gas not tested

Remarks on result:

no reaction with water observed

Test procedure:

other: Run 2: Mass of sample: 10 g

Max. rate of gas release:

0.37 L/kg h

Identity of evolved gas:

other: flammability of generated gas not tested

Remarks on result:

no reaction with water observed

Test procedure:

other: Run 3: Mass of sample: 10 g

Max. rate of gas release:

0.35 L/kg h

Identity of evolved gas:

other: flammability of generated gas not tested

Remarks on result:

no reaction with water observed

No significant gas generation was observed over the initial 7 hour test period. Slow gas generation was observed to start after approximately 10 hours and a pale yellow solid formed at the bottom of the flask. The maximum rate of gas generation (0.87 l.kg-1.h-1) was observed in Run 2 approximately 20 hours after adding the water. The generated gas was not tested for flammability (anticipated to be carbon dioxide – non-flammable).

Interpretation of results:

not classified based on GHS criteria

Conclusions:

Does not emit flammable gases in contact with water.

Reference 2

Endpoint:

pyrophoric liquids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

17/06/2009 - 26/06/2009

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.13 (Pyrophoric Properties of Solids and Liquids)

GLP compliance:

yes

Test procedure:

other: Porselain Cup

Remarks on result:

no ignition on contact with air (not further specified)

Test procedure:

effect on filter paper

Remarks on result:

no charring

Test procedure:

effect on filter paper

Remarks on result:

no ignition on contact with air (not further specified)

The test is designed to determine the ability of a solid or liquid to ignite on contact with air.

The test is conducted in accordance with EC 440/2008 incorporating EC’s “Classification,

Packaging & Labelling of Dangerous Substances in the European Union” Part 2, Testing

methods, Jan ’97. Directive 92/69, Annex V to Council Directive 67/548/EC.

Test Procedure:

Solids

1-2 ml of the powdery substance to be tested is poured from a height of 1 metre onto a

non-combustible surface and it is observed whether the substance ignites during dropping

or within 5 minutes of settling. The test is performed six times unless a positive result is

obtained earlier.

Liquids

Two separate tests are conducted. The first involves filling a porcelain cup of about

100 mm diameter with diatomaceous earth or silica gel to a height of 5 mm. 5 ml of the

substance to be tested is added and it is observed if the substance ignites within

5 minutes. The test is performed six times unless a positive result is obtained earlier. If the

result is negative then the second test is conducted. This involves placing 0.5 ml of the

substance in the centre of a dry filter paper. It is observed if ignition or charring occurs

within five minutes. The test is performed three times unless a positive result is obtained

earlier.

Interpretation of Results:

If the sample ignites in any one of the tests, the material should be considered pyrophoric.

Interpretation of results:

not classified based on GHS criteria

Conclusions:

No reaction was observed in any test. Therefore, the sample is not a pyrophoric liquid.

Description of key information

No significant gas generation was observed over the initial 7 hour test period. Slow gas generation was observed to start after approximately 10 hours and a pale yellow solid formed at the bottom of the flask. The maximum rate of gas generation (0.87 l.kg-1.h-1) was observed in Run 2 approximately 20 hours after adding the water. The generated gas was not tested for flammability (anticipated to be carbon dioxide – non-flammable).

The test substance is considered to be:

*not flammable in contact with water

*not pyrophoric

Key value for chemical safety assessment

Flammability:

not classified