Registration Dossier
Registration Dossier
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EC number: 237-529-3 | CAS number: 13826-66-9
Oxidising properties
Administrative data
Link to relevant study record(s)
- Endpoint:
- oxidising solids
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2014-11-26 until 2014-11-28
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- UN Manual of Tests and Criteria: Test O.1 (Test for oxidizing solids)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Contact with:
- powdered cellulose
- Duration of test (contact time):
- 180 s
- Sample tested:
- reference: 3:7 mixture potassium bromate + cellulose
- Parameter:
- mean burning time
- Result:
- 101 s
- Remarks on result:
- other: not reported
- Key result
- Sample tested:
- 1:1 sample-to-cellulose ratio
- Parameter:
- mean burning time
- Result:
- > 180 s
- Remarks on result:
- mixture does not ignite and burn
- Remarks:
- slight blackening was observed directly around the ignition wire
- Key result
- Sample tested:
- 4:1 sample-to-cellulose ratio
- Parameter:
- mean burning time
- Result:
- > 180 s
- Remarks on result:
- mixture does not ignite and burn
- Remarks:
- slight blackening was observed directly around the ignition wire
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- A test performed according to the UN O.1 test guideline demonstrated that zirconium dinitrate oxide should not be classified as a material of Class 5.1.
Reference
Test sample results:
| Mix ratio (w/w) | burning times | total (s) | mean (s) | ||||
| 1st | 2nd | 3rd | 4th | 5th | |||
| 1:1 (test material 15 g / cellulose 15 g) | >180 | >180 | >180 | >180 | >180 | >900 | >180 |
| 4:1 (test material 24 g / cellulose 6 g) | >180 | >180 | >180 | >180 | >180 | >900 | >180 |
Table with reference sample results
| Mix ratio (w/w) | burning times (s) | total (s) | mean (s) | ||||
| 1st | 2nd | 3rd | 4th | 5th | |||
| 3:7 (potassium bromate 9 g / cellulose 21 g) | 102 | 99 | 97 | 104 | 103 | 505 | 101 |
Note: As the Test Material/Cellulose mixtures possessed reaction times greater than the 3:7 potassium bromate/cellulose mixture, the test material was concluded to be not oxidizing. The 2:3 Potassium Bromate/Cellulose and 3:2 Potassium Bromate/Cellulose mixtures did not require testing as they normally allow ascribing the right hazard class/packing group when a substance is classified.
Description of key information
Zirconium dintrate oxide is concluded not to have oxidising properties based on the results of a test performed according to the UN O.1 test method (Younis, 2015c).
Key value for chemical safety assessment
- Oxidising properties:
- no
Additional information
In a GLP study in accordance with UN test method O.1, the test sample mixtures did not ignite and burn. Therefore, testing was terminated after 3 minutes in accordance with the test standard (Younis, 2015c) and it was concluded that zirconium dinitrate oxide has no oxidising properties. This study was considered as reliable (Klimisch 1) and as the key study for endpoint coverage.
Justification for classification or non-classification
It has been determined that zirconium dinitrate oxide should not be classified for oxidising properties under the CLP Regulation.
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