Registration Dossier
Registration Dossier
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EC number: 231-154-9 | CAS number: 7440-45-1
Additional physico-chemical information
Administrative data
- Endpoint:
- other: Emission of flammable gases when in contact with water
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
- Report date:
- 2009
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: UN Manual of Test and Criteria, Part III, Test N5
- Deviations:
- no
- GLP compliance:
- no
Test material
- Reference substance name:
- Cerium
- EC Number:
- 231-154-9
- EC Name:
- Cerium
- Cas Number:
- 7440-45-1
- Molecular formula:
- Ce
- IUPAC Name:
- cerium(3+)
- Details on test material:
- Sample in massive form, partially covered by a layer of oxidised material.
Constituent 1
Results and discussion
- Results:
- Two samples of 22.2 g were cut off from the massive cerium probe and were brought into de-ionised water at room temperature. The emited gases were measured using an appropriate gas burette. The gas emission was controlled every hour for 24 hours, after which the gas emission stopped.
The overall gas amount collected was 6,9 ml (measured under standard conditions, p = 1013,3 hPa and T=273 K), i.e. a gas development rate of 12,45 ml /Kg sample x hour.
Applicant's summary and conclusion
- Conclusions:
- The low gas development rate of 12,45 ml /Kg Ce x hour does not suffice to fulfill any of the classification requirements of the division 4.3, ie. packing groups I, II and III. Therefore, cerium metal shall not be considered to emit flammable gases when in contact with water.
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