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Physical & Chemical properties

Flammability

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Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
09 June 2011 and 18 July 2011.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
Study conducted in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results. The study report was conclusive, done to a valid guideline and the study was conducted under GLP conditions.
Qualifier:
according to
Guideline:
EU Method A.10 (Flammability (Solids))
Deviations:
no
GLP compliance:
yes (incl. certificate)
Key result
Test procedure:
burning rate test: preliminary screening test
Remarks:
or specified in description of method (migrated information)
Burning time:
4 s
Moisture (wt %):
7.814
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 with a small yellow flame which self-extinguished after 4 seconds without propagating combustion.

The result of the preliminary screening test obviated the need to perform the main test.

Moisture content

 

Determination A

Determination B

a) Mass of loss bottle (g)

20.0181

21.3784

b) Mass of loss bottle and test item (g)

21.0848

22.4744

c) Mass of loss bottle and test item    after drying (g)

21.0017

22.3885

Moisture content (% w/w)

7.790

7.838

Mean moisture content (% w/w)

7.814

The test item has been determined to be not highly flammable as it did not propagate combustion over the 200 mm of the preliminary screening test.

Interpretation of results:
non flammable
Remarks:
Migrated information
Conclusions:
The test item has been determined to be not highly flammable as it did not propagate combustion over the 200 mm of the preliminary screening test.
Executive summary:

The flammability (solids) was determined by measuring the burning rate of test item prepared as a pile of set dimensions. Testing was conducted using a procedure designed to be compatible with Method A10 Flammability (Solids) of Commission Regulation (EC) No 440/2008 of 30 May 2008.

Preliminary screening test

The pile ignited with a small yellow flame which self-extinguished after 4 seconds without propagating combustion. The result of the preliminary screening test obviated the need to perform the main test.

Conclusion

The test item has been determined to be not highly flammable as it did not propagate combustion over the 200 mm of the preliminary screening test.

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
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

Description of key information

The substance was determined not to be flammable when tested in accrodance with EU Method A10 Flammability (Solids) of Commission Regulation (EC) No 440/2008 of 30 May 2008.

Key value for chemical safety assessment

Flammability:
non flammable

Additional information

In accordance with section 1.2 of REACH Regulation (EC) No. 1907/2006 Annex XI the study of flammability may be completed based on weight of available evidence.

 

For solids the primary assessment for flammability is conducted using Method A10 ‘flammability (solids)’ of Council Regulation (EC) No 440/2008. The result of this test is used to allocate a solid substance into the appropriate flammability class.

Other measures of flammability include pyrophoricity and flammability on contact with water. These can be considered not a concern for the substance and testing waived if consideration of experience in handling and use show that no effects are envisaged. Such a screening procedure represents an intelligent testing strategy for flammability. If applied correctly then only solid substances for which it is suspected will give a positive result in either the pyrophoric properties or flammability on contact with water tests need to be tested.

 

A review of handling and used implies no pyrophoric properties or flammability on contact with water. Based on experience in handling and use negative results are predicted for pyrophoric properties and flammability of contact with water. Based on the flammability (solids) test, the substance is concluded to be non flammable.

 

References:

1. Bretherick (1999) Bretherick’s Handbook of Chemical Reactive Hazards: An Indexed Guide to Published Data, 6th Edition (2 volume set).

2. ECHA Guidance on Information Requirements and Chemical Safety Assessment (Chapter R.7a: Endpoint Specific Guidance, R.7.1.10.2, December 2016).

3. REACH Regulation (EC) 1907/2006, Annex XI, section 1

4. CLP Regulation (EC) 1272/2008, Annex I, section 2.6.1

5. ECHA Guidance on Application on the CLP Criteria, section 2.6 (v4.1, June 2015)

Justification for classification or non-classification

The substance does not meet the classification criteria for flammability in accordance with Regulation (EC) No 1272/2008 (CLP).