Registration Dossier

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Qualifier:
according to guideline
Guideline:
UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)
Deviations:
no
GLP compliance:
not specified
Specific details on test material used for the study:
Batch no.: 145
Appearance: white granular powder
Key result
Test procedure:
burning rate test over 100 mm length
Remarks on result:
other: the flame extinguished shortly after the gas burner was removed, without propagating along the test train

The test substance was formed into a particle train. A hot flame from a gas burner with a diameter of about 6 mm was used to ignite the pile at one end. In the preliminary screening test, the substance was ignited by a hot flame from a gas burner. The flame extinguished after the gas burner was removed and did not propagate along the test train. The test substance was not to be classified as a readily combustible solid of the UN-class 4.1.

The classsification, based on the test results of the self-heating substances, is to be made according to the Regulation (EC) 1272/2008 of the Europeen Parliament and of the Council on Registration, Evaluation, Authorization and Restriction of Chemicals (REACH).

Interpretation of results:
other: not classified based on CLP criteria
Conclusions:
Under the study conditions, the substance could not be ignited and was not classified as a readily combustible solid.
Executive summary:

A study was conducted to determine the flammability temperature of the test substance according to the test method N.1 (test method for readily combustible solids) as described in the UN Recommendations of Dangerous Goods, Manual of Tests and Criterian part III, sub-section 33.2.1.4. The test substance was formed into a particle train. A hot flame from a gas burner with a diameter of about 6 mm was used to ignite the pile at one end. In the preliminary screening test, the substance was ignited by a hot flame from a gas burner. The flame extinguished shortly after the gas burner was removed without propagating along the test train. Under the study conditions, the substance could not be ignited and was not classified as a readily combustible solid (Kintrup, 2016).

Description of key information

The flammability was determined according to the UN Test Method N.1 (Kintrup, 2016).

Key value for chemical safety assessment

Flammability:
not classified

Additional information

Justification for classification or non-classification

Based on the flammability study with the substance, no classification is warranted according to EU CLP (1272/2008) criteria.