Registration Dossier

Physical & Chemical properties

Oxidising properties

Currently viewing:

Administrative data

Link to relevant study record(s)

Referenceopen allclose all

Endpoint:
oxidising properties
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
supporting study
Study period:
2010-09-20 to 2010-09-27
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: guideline study
Qualifier:
according to
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
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

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.

Interpretation of results:
other: no oxidising properties
Remarks:
Migrated information
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

Description of key information

Cobalt oxalate has no oxidising properties, it is incapable of reacting exothermically with combustible material.

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, for example on the basis of the chemical structure.

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”. Since cobalt monoxide represents an inorganic substance with cobalt in the oxidation state (+II) and lower oxygen to cobalt ratio of 1.0, the substance is thus intrinsically less oxidising than tricobalt tetraoxide. Further testing is not required in accordance with annex XI, section 1.1.1 of regulation (EC) 1907/2006.

Justification for classification or non-classification

Cobalt oxide oes not need to be classified according to CLP Regulation (EC) No 1272/2008 since oxidising properties are considered non-relevant based on the chemical structure.