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Physical & Chemical properties

Flammability

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Reference
Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
10 May 2018 to 26 February 2019
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Specific details on test material used for the study:
Batch: TG 3774
Purity: 97%
Expiry date: 01 July 2020
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

Upon application of a Bunsen flame, the test item charred, began to melt and bubble, before igniting after 7 seconds with a yellow/orange flame. This self-extinguished without propagating combustion.

Interpretation of results:
not classified based on GHS criteria
Conclusions:
The flammability of the substance was determined by measuring the burning rate of test item, prepared as a pile of set dimensions, according to Test N.1, UN-MTC. In the preliminary screening test, ignition self-extinguished without propagating combustion. Therefore, a definitive test was not needed, and the substance was not classified as a flammable solid under EU CLP/ UN-GHS.
Executive summary:

The flammability of the substance was determined by measuring the burning rate of test item, prepared as a pile of set dimensions, according to Test N.1, UN-MTC. In the preliminary screening test, ignition self-extinguished without propagating combustion. Therefore, a definitive test was not needed, and the substance was not classified as a flammable solid under EU CLP/ UN-GHS.

Description of key information

Flammable solids: The flammability of the substance was determined by measuring the burning rate of test item, prepared as a pile of set dimensions, according to Test N.1, UN-MTC. In the preliminary screening test, ignition self-extinguished without propagating combustion. Therefore, a definitive test was not needed, and the substance was not classified as a flammable solid under EU CLP/ UN-GHS.

 

Self-heating substances / mixtures: The substance is not explosive, oxidising or flammable, and notified classifications for the two main constituents do not features classification for self-heating. Experience of usage and handling confirm the substance does not have self-heating properties.

 

Pyrophoric solids: the classification procedure for pyrophoric solids need not be applied when experience in manufacture or handling shows that the substance or mixture does not ignite spontaneously on coming into contact with air at normal temperatures (i.e. the substance or mixture is known to be stable at room temperature for prolonged periods of time (days)).

 

Substances / mixtures which in contact with water emit flammable gases: experience in handling and use shows that the substance or mixture does not react with water, e.g. the substance is manufactured with water or washed with water, and the substance or mixture is known to be soluble in water to form a stable mixture.

Key value for chemical safety assessment

Flammability:
not classified

Additional information

Justification for classification or non-classification

In the prelimiary test the test item charred and began to melt and bubble before igniting 7 seconds after the Bunsen flame was applied, with a yellow/orange flame which self-extinguished without propagating combustion. therefore according to Method N.1 of United Nations Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, 6th revised edition, 2015 no further testing is required and the substance should not be classified as flammable solid.