Sodium metavanadate

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising solids

Type of information:

migrated information: read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

key study

Study period:

2010-09-20 to 2010-09-24

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:

no

Contact with:

powdered cellulose

Duration of test (contact time):

3 min

Sample tested:

reference: 3:7 mixture potassium bromate + cellulose

Parameter:

mean burning time

Result:

83 s

Sample tested:

reference: 2:3 mixture potassium bromate + cellulose

Parameter:

mean burning time

Result:

56 s

Sample tested:

4:1 sample-to-cellulose ratio

Parameter:

mean burning time

Result:

247 s

Sample tested:

1:1 sample-to-cellulose ratio

Parameter:

mean burning time

Result:

222 s

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	249 s	225 s	254 s	242 s	264 s	247 s
1:1	2469 s	211 s	227 s	212 s	215 s	222 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 each case, the power supply was switched off after 3 min.

In all tests with the test item and Cellulose in the ratio 1:1, the mixture decomposed with a light bluish flame very slowly over the complete pile. In each case, the power supply was switched off after 3 min.

The mean burning times of the test item-to-Cellulose ratio 4.1 and 1:1 were significantly greater than the mean burning time of a 3:7 mixture of Potassium bromate and Cellulose.

Interpretation of results:

GHS criteria not met

Conclusions:

Read-across from another form of vanadium with a higher oxygen content (i.e. V2O5 with an oxygen content of 44 %) to NaVO3 (oxygen content of 39 %) indicates that NaVO3 does not have any oxidising potential.

GHS and EC 1272/2008 (CLP-Guideline)
Sodium metavanadate does not need to be classified as oxidizing solid according to GHS and EC 1272/2008 (CLP-Guideline) Annex 1: 2.14.

UN-Transport regulations
Sodium metavanadate does not need to be classified as oxidizing solid in Division 5.1 according to the UN-Transport Regulations.

Description of key information

Oxidizing properties are not considered relevant for sodium metavanadate based on chemical structure and oxygen content.

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Additional information

In accordance with Regulation (EC) No 1907/2008 Annex VII Section 7.13, Column 2, the study does not need to be conducted as NaVO3 does not contain a surplus of oxygen or any structural groups that have a tendency to react exothermally with combustible material (oxygen content is 39 %).

Furthermore, forms of vanadium with a higher oxygen content (i.e. V2O5) are not oxidising according to a study performed in accordance with transport of dangerous goods UN-Test O.I: Read-across from another form of vanadium with a higher oxygen content (i.e. V2O5 with an oxygen content of 44 %) to NaVO3 (oxygen content of 39 %) indicates that NaVO3 does not have any oxidising potential.

Justification for classification or non-classification

Sodium metavanadate does not need to be classified as oxidizing solid according to GHS and EC 1272/2008 (CLP-Guideline) Annex 1: 2.14.

Sodium metavanadate does not need to be classified as oxidizing solid in Division 5.1 according to the UN-Transport Regulations.