4,4'-cyclohexylidenedi-o-cresol

Flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.10 (Flammability (Solids))

Deviations:

no

GLP compliance:

yes

Key result

Test procedure:

burning rate test: preliminary screening test

Remarks on result:

substance does not ignite and propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 2 minutes test period

The sample of the test material was made into a pile of 250 mm in length. An attempt was made to ignite the sample with the aim to measure the burning time, if applicable. The test material could not be ignited with a flame during the preliminary test (contact time of about 2 minutes). In contact with the ignition source, the test material melted. First, the melt was clear and then changed to brown. There was no smoke or soot observed. The solidified melt was brownish-white. Therefore, no main test was performed.

Interpretation of results:

other: non-flammable according to EU criteria

Conclusions:

The test material was determined to be non-flammable.

Executive summary:

The flammability of the test material was investigated in accordance with the standardised guideline EU Method A.10 under GLP conditions.

The sample of the test material was made into a pile of 250 mm in length. An attempt was made to ignite the sample with the aim to measure the burning time, if applicable. The test material could not be ignited with a flame during the preliminary test (contact time of about 2 minutes). In contact with the ignition source, the test material melted. First, the melt was clear and then changed to brown. There was no smoke or soot observed. The solidified melt was brownish-white. Therefore, no main test was performed.

The test material was determined to be non-flammable in accordance with the criteria outlined in the EU guideline.

Reference 2

Endpoint:

pyrophoric solids

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the substance is known to be stable in contact with air at room temperature for prolonged periods of time (days) and hence, the classification procedure does not need to be applied

Justification for type of information:

JUSTIFICATION FOR DATA WAIVING
In accordance with section 1.5 of REACH Annex XI, the study does not need to be performed as based on chemical structure pyrophoric properties are not to be expected.

Reference 3

Endpoint:

substances / mixtures which in contact with water emit flammable gases

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the experience in production or handling shows that the substance does not react with water, e.g. the substance is manufactured with water or washed with water

Justification for type of information:

JUSTIFICATION FOR DATA WAIVING
In accordance with section 1.5 of REACH Annex XI, the study does not need to be performed as based on chemical structure water reactivity is not to be expected.

Description of key information

The test material was determined to be non-flammable.

Key value for chemical safety assessment

Flammability:

non flammable

Additional information

Flammability (solids)

The flammability of the test material was investigated in accordance with the standardised guideline EU Method A.10 under GLP conditions. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).

The sample of the test material was made into a pile of 250 mm in length. An attempt was made to ignite the sample with the aim to measure the burning time, if applicable. The test material could not be ignited with a flame during the preliminary test (contact time of about 2 minutes). In contact with the ignition source, the test material melted. First, the melt was clear and then changed to brown. There was no smoke or soot observed. The solidified melt was brownish-white. Therefore, no main test was performed.

The test material was determined to be non-flammable in accordance with the criteria outlined in the EU guideline.

 

 

 

Flammablity (pyrophoricity and contact with water)

In accordance with point 1 of Annex XI, it is considered justified to omit the testing for pyrophoric properties and testing for substances or mixtures which in contact with water emit flammable gases. Testing does not appear scientifically necessary as experience in use and experience of handling the substance indicates that it does not possess pyrophoric properties or emit flammable gases in contact with water.

Justification for classification or non-classification

In accordance with the criteria for classification as defined in Annex I, Regulation (EC) No 1272/2008, the substance does not require classification with respect to flammability.