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Reference
Endpoint:
oxidising solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
11 September 2015 - 29 October 2015
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:
yes
Contact with:
powdered cellulose
Duration of test (contact time):
3 min
Sample tested:
1:1 sample-to-cellulose ratio
Parameter:
mean burning time
Result:
241 s
Sample tested:
4:1 sample-to-cellulose ratio
Parameter:
mean burning time
Result:
603 s
Sample tested:
reference: 3:7 mixture potassium bromate + cellulose
Parameter:
mean burning time
Result:
84 s

The burning times for the test substance and reference substance mixtures with cellulose are tabulated below.

Test No.

Burning Times (s)

Test Substance

Reference

4:1

1:1

3:7

1.

578

220

105

2.

580

205

65

3.

686

222

96

4.

541

292

70

5.

630

264

86

Mean

603

241

84

The 4:1 test substance mixtures melted and ignited and the cones collapsed into pooled liquid in the centre. Some of the material around the edges of the cones remained unburnt.

The 1:1 test substance mixtures fumed heavily before igniting and the fuming continued after the flames had extinguished. Again some of the material remained unburnt.

The mean burning times of the test substance/cellulose mixtures was determined to be greater than the mean burning time of the potassium bromate/cellulose mixtures used as standards.  In accordance with the criteria of UN Test O.1, the test substance is not classified as an oxidizing solid.

Interpretation of results:
GHS criteria not met
Conclusions:
The mean burning times of the test substance/cellulose mixtures were determined to be 603 seconds for a 4:1 mixture of test item:cellulose and 241 seconds for a 1:1 mixture of test item:cellulose. Both are greater than the mean burning time of the potassium bromate/cellulose mixtures used as standards. In accordance with the criteria of UN Test O.1, the test substance is not classified as an oxidizing solid.
Executive summary:

The study was performed to determine the oxidising properties of the test substance. The method employed was the UN Test O.1: “Test for Oxidizing Solids”.

 

The mean burning times of the test substance/cellulose mixtures were determined to be 603 seconds for a 4:1 mixture of test item:cellulose and 241 seconds for a 1:1 mixture of test item:cellulose. Both are greater than the mean burning time of the potassium bromate/cellulose mixtures used as standards. In accordance with the criteria of UN Test O.1, the test substance is not classified as an oxidizing solid.

Description of key information

The mean burning times of the test substance/cellulose mixtures were determined to be 603 seconds for a 4:1 mixture of test item:cellulose and 241 seconds for a 1:1 mixture of test item:cellulose. Both are greater than the mean burning time of the potassium bromate/cellulose mixtures used as standards. In accordance with the criteria of UN Test O.1, the test substance is not classified as an oxidizing solid.

Key value for chemical safety assessment

Oxidising properties:
non oxidising

Additional information

Justification for classification or non-classification