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Reference
Endpoint:
oxidising solids
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Qualifier:
according to guideline
Guideline:
UN Manual of Tests and Criteria: Test O.1 (Test for oxidizing solids)
GLP compliance:
no
Contact with:
powdered cellulose
Duration of test (contact time):
min
Sample tested:
1:1 sample-to-cellulose ratio
Parameter:
mean burning time
Result:
>= 68.8 - <= 76.8 s
Remarks on result:
other: Mean Burning Time; 73.2 s
Sample tested:
4:1 sample-to-cellulose ratio
Parameter:
mean burning time
Result:
>= 27 - 33.2 s
Remarks on result:
other: Mean Burning Time; 29.3 s
Sample tested:
reference: 3:7 mixture potassium bromate + cellulose
Parameter:
other: Burning Time
Remarks on result:
other: Reference Mixture; r1 result. 3:7 ratio of Potassium bromate: cellulose (by mass). Based on the test results of the ratios of sample: cellulose was not necessary.
Sample tested:
reference: 2:3 mixture potassium bromate + cellulose
Parameter:
mean burning time
Result:
>= 51.6 - <= 64 s
Remarks on result:
other: Mean Burning Time; 57.3 s, n = 5
Sample tested:
other: not specified (migrated information) Burning Time
Parameter:
other: Burning Time
Result:
>= 15 - <= 20 s
Remarks on result:
other: Reference Mixture; r3 result. 3:2 ratio of Potassium bromate: cellulose (by mass); Mean Burning Time; 18.4 s, n= 5

Ruthenium-(IV)-oxide (2.23/061011/01)

The sample was used as delivered. 

Ratios of

Sample: cellulose

[by mass]

Burning time t [s]

Mean burning times
[s]

1 : 1

76.8

76.0

68.8

73.2

71.4

t1: 73.2

Burn-off with yellow flames

4 : 1

29.8

28.6

27.0

28.0

33.2

t2: 29.3

Violent burn-off with yellow flames

  

Reference mixtures (measured 14 September 2011)

Ratios of potassium bromate : Cellulose
[by mass]

Burning time t [s]

Mean burning times
[s]

3:7

 

  *

 

 

*

*

2:3

60.0

51.6

52.6

58.4

64.0

R2: 57.3

Burn-off with yellow flames

3:2

20.0

20.0

17.0

20.0

15.0

R3: 18.4

Violent burn-off with yellow flames

* Based on the test results of the rations of sample : cellulose testing was not necessary

Interpretation of results:
Category 2 (oxidising solids) based on GHS criteria
Conclusions:
On the basis of the test results and according to the criteria specified in the Regulation (EC) No 1272/2008 (CLP-/GHS-Regulation) ruthenium-(IV)-oxide is an oxidising solid of Category 2.
Executive summary:

This is a guideline experimental study and is not GLP compliant, but is otherwise adequate for assessment. On the basis of the test results and according to the criteria specified in the Regulation (EC) No 1272/2008 (CLP-/GHS-Regulation) ruthenium-(IV)-oxide is an oxidising solid of Category 2.

Description of key information

On the basis of the test results and according to the criteria specified in the Regulation (EC) No 1272/2008 (CLP-/GHS-Regulation) ruthenium(IV)oxide is an oxidising solid of Category 2.

Key value for chemical safety assessment

Oxidising properties:
yes

Additional information

Michael-Schulz (2011) is a non-GLP study, following UN method O.1 and is considered to be adequate for assessment of this endpoint. On the basis of the test results and according to the criteria specified in the Regulation (EC) No 1272/2008 (CLP-/GHS-Regulation) ruthenium (IV) oxide is an oxidising solid of Category 2.

Justification for classification or non-classification

On the basis of the test results and according to the criteria specified in the Regulation (EC) No 1272/2008 (CLP-/GHS-Regulation) ruthenium-(IV)-oxide is an oxidising solid of Category 2.

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