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Reference
Endpoint:
oxidising solids
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
UN Manual of Tests and Criteria: Test O.1 (Test for oxidizing solids)
Principles of method if other than guideline:
No further information
GLP compliance:
yes (incl. certificate)
Contact with:
powdered cellulose
Duration of test (contact time):
300 s
Key result
Sample tested:
4:1 sample-to-cellulose ratio
Parameter:
preliminary test
Remarks on result:
mixture does not ignite and burn
Key result
Sample tested:
1:1 sample-to-cellulose ratio
Parameter:
preliminary test
Remarks on result:
mixture does not ignite and burn

With both a 4:1 and a 1:1 mixture of substance: cellulose, the burning rate was very slow causing decomposition. The test was abandoned after 300 seconds. It can be concluded that chromium oxide has no oxidising properties. Below are the tables of results;

 

Mixture 4:1

(substance:cellulose)

Mixture 1:1

(Substance:cellulose)

Run 1

very slow

decomposition,

test abandoned

after 300 s

very slow

decomposition,

test abandoned

after 300 s

Run 2

Run 3

Run 4

Run 5

 

 

 

Burning time

Last reference measurement 2008-03-07

Mixture

(Substance:cellulose)

Greater than

equal

Less than

Mixture

(potassium bromate:cellulose)

Burning time (s)

4:1 or 1:1

x

 

 

3:2

20

4:1 or 1:1

x

 

 

2:3

52

4:1 or 1:1

x

 

 

3:7

133

4:1 and 1:1

x

 

 

3:7

133

 

Interpretation of results:
GHS criteria not met
Conclusions:
With both a 4:1 and a 1:1 mixture of substance: cellulose, the burning rate was very slow causing decomposition. The test was abandoned after 300 seconds. It can be concluded that chromium oxide has no oxidising properties.
Executive summary:

With both a 4:1 and a 1:1 mixture of substance: cellulose, the burning rate was very slow causing decomposition. The test was abandoned after 300 seconds. It can be concluded that chromium oxide has no oxidising properties.

Description of key information

Chromium oxide has no oxidising properties.

Key value for chemical safety assessment

Oxidising properties:
non oxidising

Additional information

With both a 4:1 and a 1:1 mixture of substance: cellulose, the burning rate was very slow causing decomposition. The test was abandoned after 300 seconds. It can be concluded that chromium oxide has no oxidising properties.

Justification for classification or non-classification

No classification is proposed: there is no evidence that the substance is an oxidising agent.