Registration Dossier
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EC number: 233-801-0 | CAS number: 10361-92-9
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:
- 11 July 2017 - 24 August 2017
- 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:
- yes
- Remarks:
- Particle size of potassium bromate < 150 µm instead of > 150 µm. Test performed at 27.0°C-29.5°C instead of 20°C +/- 5°C. These deviations were not considered to have affected the quality or the interpretation of the results.
- GLP compliance:
- yes (incl. QA statement)
- Contact with:
- powdered cellulose
- Key result
- Sample tested:
- 1:1 sample-to-cellulose ratio
- Parameter:
- mean burning time
- Remarks on result:
- other: Combustion without flame was not considered as main reaction and its reaction time cannot be compared with the time of an ignition reaction.
- Key result
- Sample tested:
- 4:1 sample-to-cellulose ratio
- Parameter:
- mean burning time
- Remarks on result:
- other: Combustion without flame was not considered as main reaction and its reaction time cannot be compared with the time of an ignition reaction.
- Sample tested:
- reference: 3:7 mixture potassium bromate + cellulose
- Parameter:
- mean burning time
- Result:
- 111 s
- Remarks on result:
- other: Ignition
- Sample tested:
- reference: 2:3 mixture potassium bromate + cellulose
- Parameter:
- mean burning time
- Result:
- 72 s
- Remarks on result:
- other: Ignition
- Sample tested:
- reference: 3:2 mixture potassium bromate + cellulose
- Parameter:
- mean burning time
- Result:
- 4 s
- Remarks on result:
- other: Explosive ignition
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- The oxidising properties of yttrium trichloride (tested as hexahydrated form) were investigated according to the UN O.1 test method in compliance with GLP. No main reaction was observed with the test item / cellulose mixtures in proportions 1:1 and 4:1.
The mean time of reaction with the test item / cellulose mixtures was considered to be higher than the mean time of reaction with the reference item / cellulose mixture in proportion 3:7 (determined in this study and the mean time specified in the United Nations Recommendations on the Transport of Dangerous Goods - Manual of Tests and Criteria - Sixth revised edition (2015) - Test O.1 (Part III, Section 34.4.1) and EC No. 1272/2008 (CLP)).
Therefore, the substance is not considered as an oxidising solid of Division 5.1, is not assigned to any packing group, and is not classified as an oxidising solid under the CLP regulation.
Reference
No main reaction was observed with the test item / cellulose mixtures in proportions 1:1 and 4:1. The mean time of reaction with the test item / cellulose mixtures was considered to be higher than the mean time of reaction with the reference item / cellulose mixture in proportion 3:7 (determined in this study and the mean time specified in the United Nations Recommendations on the Transport of
Dangerous Goods - Manual of Tests and Criteria - Sixth revised edition (2015) - Test O.1 (Part III, Section 34.4.1) and EC No. 1272/2008 (CLP)).
Therefore, the substance is not considered as an oxidising solid of Division 5.1, is not assigned to any packing group, and is not classified as an oxidising solid under the CLP regulation.
Description of key information
Based on the guideline study (Demangel, 2017b; Klimisch 1) in which the oxidising properties of yttrium trichloride (tested as hexahydrated form) were investigated according to the UN O.1 test method in compliance with GLP, it was concluded that the substance does not have oxidising properties.
Key value for chemical safety assessment
- Oxidising properties:
- non oxidising
Additional information
In the study of Demangel (2017b), the mean times of reaction (i.e. no main reaction) with the test item / cellulose mixtures in ratios 4:1 and 1:1 were considered to be higher than the mean times of reaction measured during this study for the potassium bromate / cellulose mixtures in ratios 3:7, 2:3 and 3:2. Therefore, the test can be considered as negative, and the substance is not considered as an oxidising solid of Division 5.1, is not assigned to any packing group, and is not classified as an oxidising solid under the CLP regulation. Results of this study are considered reliable without restrictions.
Justification for classification or non-classification
Based on the UN O.1 study performed by Demangel (2017b), yttrium trichloride (hexahydrate) is not considered to have oxidising properties and therefore does not need to be classified for this endpoint under the CLP Regulation.
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