Registration Dossier
Registration Dossier
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EC number: 231-953-2 | CAS number: 7782-40-3
Flammability
Administrative data
- Endpoint:
- flammable solids
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study following internationally accepted EC guidelines.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 010
- Report date:
- 2010
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.10 (Flammability (Solids))
- Deviations:
- no
- GLP compliance:
- no
Test material
- Reference substance name:
- Diamond
- EC Number:
- 231-953-2
- EC Name:
- Diamond
- Cas Number:
- 7782-40-3
- Molecular formula:
- C
- IUPAC Name:
- carbon
- Details on test material:
- Test item: Synthetic Diamond Grade 2 (2 micron) Powder
Chemical name: Diamond
CAS No.: 7782-40-3
Batch No.: 135-200-0125-99 E634%CU33%WT33%REACH
Physical state: light grey powder
Purity: > 95 %
Storage conditions: Room temperature, dry
Constituent 1
Results and discussion
Flammable solids
- Test procedure:
- burning time (test type not further specified)
- Remarks:
- or specified in description of method (migrated information)
- Remarks on result:
- other: The product showed a local smouldering fire when an ignition source (flame or hot wire) was applied at ambient temperature. The burning rate over a distance of 200 mm was 150 min.
Pyrophoric solids
- Test procedure:
- ignition time on contact with air
- Remarks:
- 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)
- Remarks:
- corresponding to 'no' in migrated source record.
Pyrophoric liquids
- Test procedure:
- ignition time on contact with air
- Remarks:
- 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)
- Remarks:
- corresponding to 'no' in migrated source record.
Any other information on results incl. tables
The product showed a local smouldering fire when an ignition source (flame or hot wire) was applied at ambient temperature. For both ignition sources a slowly propagation of the combustion was observed. The product did not melt. (BZ4)
Due to the fact that a propagation of the combustion was observed the burning rate was determined.
Preliminary test: The burning rate over a distance of 200 mm was 150 min. The burning rate was above the limit for classification.
Classification according to EC 44012008:
The test item is classified as highly flammable solid (R11) with the danger symbol F if the burning time over the burning distance of 100 mm is < 45 seconds. If the burning time over a distance of 100 mm is > 45 seconds, the product has not to be classified as highly flammable according EC 44012008.
Classification according to the UN-Transport Guideline (and GHS / EC 1272/2008 (CLP Guideline)):
Having a burning time of < 45 seconds or the burning rate is > 2,2 mm/s and the combustion can be stopped by a wetted zone for at least 4 minutes, the product has to be classified as readily combustible solid in Division 4.1 (Packing Group II) (flammable solid, Signal Word Warning according to GHS). In case the combustion cannot be stopped by a wetted zone, the product must be classified as readily combustible solid in Division 4.1 (Packing Group I) (flammable solid, Signal Word Danger according to GHS). If the burning time over a distance of 100 mm is > 45 seconds the product has not to be classified as readily combustible solid in Division 4.1 (flammable solid according to GHS).
Applicant's summary and conclusion
- Interpretation of results:
- flammable
- Remarks:
- Migrated information but no classification required
- Conclusions:
- Diamond showed a local smouldering fire when an ignition source (flame or hot wire) was applied at ambient temperature. For both ignition sources a slowly propagation of the combustion was observed. The product did not melt. (BZ4). Due to the fact that a propagation of the combustion was observed the burning rate was determined. The burning rate over a distance of 200 mm was 150 min. The burning rate was above the limit for classification. The test item does not have to be classified as a flammable (readily combustible) solid according to REGULATION (EC) No 1272/2008 (CLP) and UN Recommendations on the Transport of Dangerous Goods, Manual of Test and Criteria.
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