Registration Dossier
Registration Dossier
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EC number: 234-614-7 | CAS number: 12016-80-7
Oxidising properties
Administrative data
Link to relevant study record(s)
- Endpoint:
- oxidising solids
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 2010-09-20 to 2010-09-27
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: Transport regulation UN-Test O.1.
- Deviations:
- no
- Principles of method if other than guideline:
- It is tested whether a test item should be assigned as oxidizing solid with respect to UN-Transport Regulations (Division 5.1) and GHS or EC 1272/2008 (CLP-Regulation) Annex 1: 2.14, respectively.
- GLP compliance:
- no
- Contact with:
- powdered cellulose
- Duration of test (contact time):
- 3 min
- Sample tested:
- other: not specified (migrated information) mean burning time
- Parameter:
- other: mean burning time
- Result:
- 330 s
- Remarks on result:
- other: Test item – Cellulose: 4 : 1
- Sample tested:
- other: not specified (migrated information) mean burning time
- Parameter:
- other: mean burning time
- Result:
- 281 min
- Remarks on result:
- other: Test item – Cellulose: 1 : 1
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- UN-Transport regulations
Tricobalt tetraoxide has not to be classified as oxidizing solid in Division 5.1 according to the UN-Transport Regulations.
GHS and EC 1272/2008 (CLP-Regulation)
Tricobalt tetraoxide has not to be classified as oxidizing solid according to GHS and EC 1272/2008 (CLP-Regulation) Annex 1: 2.14. - Endpoint:
- oxidising solids
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance is incapable of reacting exothermically with combustible materials
Referenceopen allclose all
Reference mixtures from potassium bromate and cellulose
Potassium bromate – Cellulose |
Test 1 |
Test 2 |
Test 3 |
Test 4 |
Test 5 |
Average |
3:7 |
83 s |
90 s |
93 s |
86 s |
65 s |
83 s |
2:3 |
54 s |
67 s |
51 s |
64 s |
44 s |
56 s |
Mixtures from test item and Cellulose
Test item – Cellulose |
Test 1 |
Test 2 |
Test 3 |
Test 4 |
Test 5 |
Average |
4:1 |
305 s |
325 s |
348 s |
333 s |
337 s |
330 s |
1:1 |
288 s |
272 s |
290 s |
284 s |
269 s |
281 s |
In all tests with the test item and Cellulose in the ratio 4:1 the mixture decomposed flameless very slowly over the complete pile.
In all tests with the test item and Cellulose in the ratio 1:1 the mixture decomposed with a yellowish flame very slowly over the complete pile.
The mean burning times of the test item-to-Cellulose ratio 4.1 and 1:1 are significantly greater than the mean burning time of a 3:7 mixture of Potassium bromate and Cellulose.
UN-Transport regulations
The product has not to be classified as oxidizing solid in Division 5.1 according to the UN-Transport Regulations.
GHS and EC 1272/2008 (CLP-Regulation)
The product has not to be classified as oxidizing solid according to GHS and EC 1272/2008 (CLP-Regulation) Annex 1: 2.14.
Description of key information
Cobalt hydroxide oxide has no oxidising properties, it is incapable of reacting exothermically with combustible materials
Key value for chemical safety assessment
- Oxidising properties:
- non oxidising
Additional information
According to Regulation (EC) No 1907/2006, Annex VII, Section 7.13, Column 2,the study does not need to be conducted if the substance is incapable of reacting exothermically with combustible materials.
A test on the oxidising properties according to transport regulation UN-Test O.1 was recently conducted for tricobalt tetraoxide in which cobalt is present in the oxidation state (+II and +III) and a high oxygen to cobalt ratio of 1.3, yielding a result of “not oxidising”. Upon heating cobalt hydroxide oxide is transformed to tricobalt tetraoxide under evolution of water, thus cobalt hydroxide oxide is assumed to have similar or lower oxidising potential than tricobalt tetraoxide. Further testing is not required.
Justification for classification or non-classification
Cobalt hydroxide oxide does not need to be classified according to CLP Regulation (EC) No 1272/2008 since oxidising properties are considered non-relevant.
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