4,4'-(2,3-epoxypropoxy)-2,2'- dimethyl-5,5'-tert-butyldiphenylsulphide

Flammability

Link to relevant study record(s)

Reference

Reference 1

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. In addition, under conditions where the substance is in contact with water, no ignition and/or liberation of flammable gases is observed.

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. In addition, in the daily use and handling of the substance during which continuous exposure to air can occur, no spontaneous ignition is observed.

Reference 3

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

14 March 2001 to 19 March 2001

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 (incl. QA statement)

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

Preliminary screening test

The pile ignited, self extinguished after 21 seconds, failing to propagate combustion. The result of the preliminary screening test obviated the need to perform the main test.

Moisture content

The mean moisture content of the test material was determined to be < 0.1 %

Interpretation of results:

other: Not highly flammable according to EU criteria

Conclusions:

The test material has been determined to be not highly flammable as it failed to propagate combustion in the preliminary screening test.

Executive summary:

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

In a preliminary screening test the test material was found to ignite but self extinguished after 21 seconds, failing to propagate combustion. The result of the preliminary screening test obviated the need to perform the main test.

The test mateiral was therefore determined to be not highly flammable.

Description of key information

Flammability (solids)

Under the conditions of this study, the test material is not classified as a flammable solid.

Key value for chemical safety assessment

Flammability:

not classified

Additional information

Flammability (solids)

The flammability of the test material was investigated in a study which was conducted 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).

In a preliminary screening test the test material was found to ignite but self extinguished after 21 seconds, failing to propagate combustion. The result of the preliminary screening test obviated the need to perform the main test.

The test mateiral was therefore determined to be not highly flammable.

Flammability (pyrophoricity and contact with water)

In accordance with Section 1 of Annex XI of Regulation (EC) No. 1907/2006 (REACH), it is considered justified to omit the Flammability (Contact with Water) and Pyrophoric Properties of Solids and Liquids studies, also required under section 7.10 of Annex VII, on the basis that the testing does not appear to be scientifically necessary.  The chemical structure of the test material contains no groups which would indicate potential reactivity with water or pyrophoric properties.  In addition, experience of handling the material and the known chemical and physical properties of the substance suggest that it is not pyrophoric and is not flammable 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.