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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Diss Factsheets

Physical & Chemical properties


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Administrative data

pyrophoric solids
Pyrophoric liquids/solids (migrated from section 'Flammability')
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study has been performed according to German guidelines by an independent laboratory.

Data source

Reference Type:
study report
Report date:

Materials and methods

Test guideline
according to guideline
other: VDI 2263, Blatt 1: "Staubbrände und Staubexplosionen, Gefahren - Beurteilung - Schutzmaßnahmen; Untersuchungsmethoden zur Ermittlung von sicherheitstechnischen Kenngrößen von Stäuben".
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Titanium diboride
EC Number:
EC Name:
Titanium diboride
Cas Number:
Molecular formula:
titanium diboride
Test material form:
solid: particulate/powder
migrated information: powder
Details on test material:
- Name of test material (as cited in study report): Titandiborid TiB2 – FST (filter dust) and Titandiborid TiB2 Charge VB6 (TiB2 powder)
- Substance type: inorganic
- Physical state: solid
- Particle size: Titandiborid TiB2 – FST: 98% < 20µm, Titandiborid TiB2 Charge VB6 96% < 20µm-.

Results and discussion

Pyrophoric solids
Test procedure:
ignition time on contact with air
Ignition on contact with air refers to either Pyrophoric solids or Pyrophoric liquids depending on physical state (migrated information).
Remarks on result:
no ignition on contact with air (not further specified)
corresponding to 'no' in migrated source record.

Any other information on results incl. tables

Titandiborid TiB2– FST (filter dust) could be immediately ignited at 100°C and only ignited after a certain period of time at room temperature. The material showed long lasting glowing over the whole lenghth of the material strain. Based on these observations, BZ 4 was allocated to TiB2 ccontaining filter dust.

Titandiborid TiB2 Charge VB6 (TiB2 powder) could be immediately ignited at 100°C and only ignited after a certain period of time at room temperature. The material showed only local glowing. Based on these observations, BZ 3 was allocated to TiB2 powder.

Applicant's summary and conclusion

Interpretation of results:
non flammable
Migrated information
According to the results of the evaluation on burning behaviour, BZ 3 has been assigned to titanium diboride powder and BZ 4 has been assigned to TiB2 containing filter dust. Based on the burning behaviour of TiB2 in this test, it can be concluded that TiB2 does not have to be classified as highly flammable no labelling is required for TiB2.