Titanium carbide

Flammability

Link to relevant study record(s)

Reference

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2012-06-12

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.10 (Flammability (Solids))

Deviations:

yes

Remarks:

In the burning rate test TiC was ignited with a red-hot platinum wire instead of a gas flame. This is not considered to negatively influence the interpretation of the test result.

GLP compliance:

no

Key result

Test procedure:

burning time (test type not further specified)

Remarks:

or specified in description of method

Burning time:

402 s

Remarks on result:

other: Burning rate test with TiC.

1. Preliminary screening test

The test substance was formed into a powder train about 250 mm long by 20 mm wide by 10 mm high on a fireclay plate. A hot flame from a gas burner was applied to one end of the powder train. Ignition occurred and combustion propagated along 200 mm of the powder train within 403 s.

2. Burning rate test

The test substance was filled into a mould 250 mm long with a triangular cross-section of inner height 10 mm and width 20 mm. On both sides of the mould in a longitudinal direction two metal plates were mounted as lateral limitations which project 2 mm beyond the upper edge of the triangular cross section. The mould was then dropped three times from a height of 20 mm onto a solid surface resulting in a slight compaction of the powder. The lateral limitations were removed and the excess substance scraped off. A ceramic plate was placed on top of the mould, the apparatus inverted and the mould removed. A red-hot platinum wire was used to ignite the pile at one end. The burning rate over the whole distance of 250 mm was measured.

3. Result

The burning rate over 250 mm of the test substance TiC (titanium carbide) is 402 s. Since the time of burning is longer than 45 s TiC has to be considered as non combustible.

Interpretation of results:

GHS criteria not met

Conclusions:

The test substance TiC (titanium carbide) is non combustible.

Executive summary:

A test according to guideline EU A.10 was conducted to determine the flammability of titanium carbide (TiC; > 99.7 % purity). In the burning rate test TiC was ignited with a red-hot platinum wire. The burning rate over the whole distance of 250 mm was measured. The burning rate over 250 mm of the test substance TiC (titanium carbide) is 402 s. Since the time of burning is longer than 45 s TiC has to be considered as non combustible.

Description of key information

A test according to guideline EU A.10 was conducted to determine the flammability of titanium carbide (TiC; > 99.7 % purity).

Key value for chemical safety assessment

Flammability:

non flammable

Justification for classification or non-classification

In the burning rate test TiC was ignited with a red-hot platinum wire. The burning rate over the whole distance of 250 mm was measured. The burning rate over 250 mm of the test substance TiC (titanium carbide) is 402 s. Since the time of burning is longer than 45 s TiC has to be considered as non combustible.