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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:
other: GLP compliant, guideline study, available as unpublished report, acceptable without restrictions
Qualifier:
equivalent or similar to guideline
Guideline:
UN Manual of Tests and Criteria: Test O.1 (Test for oxidizing solids)
Deviations:
yes
Remarks:
Electrical resistance of the ignition wire used was 3.9Ω/m a deviation from the electrical resistance of 6.0 ± 0.5 Ω/m specified in the test O.1
GLP compliance:
yes (incl. QA statement)
Contact with:
other: Potassium bromate and cellulose
Duration of test (contact time):
3 min
Key result
Sample tested:
4:1 sample-to-cellulose ratio
Parameter:
mean burning time
Result:
3.8 s

Results of 3:7 (by mass) reference mixture of potassium bromate and cellulose
Test Number Burning time (s) Observations
1 149 Vigorous orange and blue flame with pale blue sparks and spluttering leaving a residue of dark grey ash
2 135 Vigorous orange and blue flame with pale blue sparks and spluttering leaving a residue of dark grey ash
3 106 Vigorous orange and blue flame with pale blue sparks and spluttering leaving a residue of dark grey ash
4 104 Vigorous orange and blue flame with pale blue sparks and spluttering leaving a residue of dark grey ash
5 118 Vigorous orange and blue flame with pale blue sparks and spluttering leaving a residue of dark grey ash
mean burning time (s) = 122
Results of 3:2(by mass) reference mixture of potassium bromate and cellulose
Test Number Burning time (s) Observations
1 19 Large pale blue flame produced immediately turning to orange and blue flame leaving pale grey smoke and dark grey reside
2 21 Large pale blue flame produced immediately turning to orange and blue flame leaving pale grey smoke and dark grey reside
3 21 Large pale blue flame produced immediately turning to orange and blue flame leaving pale grey smoke and dark grey reside
4 22 Large pale blue flame produced immediately turning to orange and blue flame leaving pale grey smoke and dark grey reside
5 22 Large pale blue flame produced immediately turning to orange and blue flame leaving pale grey smoke and dark grey reside
Mean buring time (s) - 21
Results of 4:1 (by mass) test item and cellulose mixture
Test Number Burning time (s) Observations
1 6 Large bright orange flame leaving a dark grey ash
2 3 Large bright orange flame leaving a dark grey ash
3 3 Large bright orange flame leaving a dark grey ash
4 4 Large bright orange flame leaving a dark grey ash
5 3 Large bright orange flame leaving a dark grey ash
Mean burning time (s) = 3.8

As the mean burning rate of the 4:1 (by mass) test item and cellulose mixture is faster than the mean burning rate of the 3:2 reference mixture (by mass) of potassium bromate and cellulose, Tris(nitrato-O)nitrosylruthenium is classified in Category 1 for oxidising solids in accordance with CLP regulations

Interpretation of results:
Category 1 (strong oxidising solids) based on GHS criteria
Conclusions:
As the mean burning rate of the 4:1 (by mass) test item and cellulose mixture is faster than the mean burning rate of the 3:2 reference mixture (by mass) of potassium bromate and cellulose, tris(nitrato-O)nitrosylruthenium is classified in Category 1 for oxidising solids in accordance with CLP regulations.
Executive summary:

This is a GLP compliant, guideline study which is considered suitable for use for this endpoint. As the mean burning rate of the 4:1 (by mass) test item and cellulose mixture is faster than the mean burning rate of the 3:2 reference mixture (by mass) of potassium bromate and cellulose, tris(nitrato-O)nitrosylruthenium is classified in Category 1 for oxidising solids in accordance with CLP regulations.

Description of key information

Tris(nitrato-O)nitrosylruthenium is classified in Category 1 for oxidising solids in accordance with CLP regulations.

Key value for chemical safety assessment

Oxidising properties:
oxidising

Additional information

Atwal and Tremain (2011) is a GLP compliant study following UN method O.1, which is considered suitable for use as the key study for this endpoint. As the mean burning rate of the 4:1 (by mass) test item and cellulose mixture is faster than the mean burning rate of the 3:2 reference mixture (by mass) of potassium bromate and cellulose, tris(nitrato-O)nitrosylruthenium is classified in Category 1 for oxidising solids in accordance with CLP regulations.

Justification for classification or non-classification

As the mean burning rate of the 4:1 (by mass) test item and cellulose mixture is faster than the mean burning rate of the 3:2 reference mixture (by mass) of potassium bromate and cellulose, tris(nitrato-O)nitrosylruthenium is classified in Category 1 for oxidising solids in accordance with CLP regulations