Reaction mass of calcium dihydroxide and calcium peroxide

Flammability

Link to relevant study record(s)

Reference

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

02/05/2018 - 28/05/2018

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

Qualifier:

according to guideline

Guideline:

UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Test procedure:

burning rate test: preliminary screening test

Burning time:

0 s

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

In contact with the flame of the gas burner the test item glowed and turned into a white/grey residue. After removal of the ignition source, no propagation of combustion of the test item was observed. No propagation of combustion of the test item along 200 mm length of the pile within 2 minutes was observed. According to the guidelines, performance of the burning rate test is not required. Based on the results obtained, the test item is considered ‘not flammable’.

Interpretation of results:

not classified based on GHS criteria

Remarks:

EU criteria.

Conclusions:

The test item is considered ‘not flammable’.

Executive summary:

The flammability of the test item was determined according to EU Method A.10 / UN N.1, under GLP. The substance was formed into an unbroken strip or powder train about 250 mm long by 20 mm wide by 10 mm high on a non-combustible, non-porous and low heat-conducting base plate, and the flame of a gas burner was applied to one end of the test item pile for 2 minutes. In contact with the flame of the gas burner the test item glowed and turned into a white/grey residue. After removal of the ignition source, no propagation of combustion of the test item was observed. Therefore, the test item was found to be not flammable according to test criteria.

Description of key information

- Flammability: Key study. Method according to EU Method A.10 / UN N.1, GLP study. The test item was found to be non-flammable.

- Pyrophoricity: Data waiving (study scientifically not necessary): Based on structure and experience on handling, the substance is known to be non-pyrophoric.

- Flammability in contact with water: Data waiving (study scientifically not necessary): The substance is not classified as flammable in contact with water based on the chemical structure and the experience in handling / use which shows that the substance does not react with water.

Key value for chemical safety assessment

Flammability:

not classified

Additional information

Key study. The flammability of the test item was determined according to EU Method A.10 / UN N.1, under GLP. The substance was formed into an unbroken strip or powder train about 250 mm long by 20 mm wide by 10 mm high on a non-combustible, non-porous and low heat-conducting base plate, and the flame of a gas burner was applied to one end of the test item pile for 2 minutes. In contact with the flame of the gas burner the test item glowed and turned into a white/grey residue. After removal of the ignition source, no propagation of combustion of the test item was observed.Therefore, the test item was found to be not flammable according to test criteria.

Justification for classification or non-classification

Based on the available information, the substance is not classified for flammability in accordance with CLP Regulation (EC) no. 1272/2008.