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Reference
Endpoint:
oxidising solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-03-10 to 2017-04-21
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reference:
Composition 0
Qualifier:
according to
Guideline:
UN Manual of Tests and Criteria: Test O.1 (Test for oxidizing solids)
Version / remarks:
2015
Deviations:
no
GLP compliance:
yes (incl. certificate)
Remarks:
signed 2017-02-28
Test material information:
Composition 1
Contact with:
powdered cellulose
Duration of test (contact time):
> 180 s
Sample tested:
reference: 3:7 mixture potassium bromate + cellulose
Parameter:
mean burning time
Result:
99 s
Remarks on result:
other: mean of 5 measurements
Sample tested:
4:1 sample-to-cellulose ratio
Parameter:
mean burning time
Result:
> 180 s
Remarks on result:
other: mean of 5 measurements
Sample tested:
1:1 sample-to-cellulose ratio
Parameter:
mean burning time
Result:
> 180 s
Remarks on result:
other: mean of 5 measurements

Residual moisture

The test item contains a residual moisture of 0.2 wt.-%, which was determined by drying the test item under vacuum at 50 °C.

The reference item potassium bromate contains a residual moisture of < 0.1 wt.-%, which was determined by drying the reference item at 65 °C.

The reagent cellulose contains a residual moisture of 5.1 wt.-%, which was determined by drying the reagent at 105 °C.

Oxidizing properties

Burning times of the reference mixtures of potassium bromate and cellulose

Potassium bromate – Cellulose

Test 1 / s

Test 2 / s

Test 3 / s

Test 4 / s

Test 5 /s

Average / s

3:7

93

105

101

97

100

99

The tests with the mixtures potassium bromate:cellulose 2:3 and 3:2 were not performed, because the burning time of the mixtures of the test item with cellulose was higher than the burning time of the reference mixture 3:7.

Burning times of the mixtures of the test item and cellulose

Test item – Cellulose

Test 1 / s

Test 2 / s

Test 3 / s

Test 4 / s

Test 5 / s

Average / s

4:1

>180

>180

>180

>180

>180

>180

1:1

>180

>180

>180

>180

>180

>180

The burning time of the mixtures of the test item with cellulose (4:1 and 1:1) is greater than the burning time of the reference mixture of potassium bromate and cellulose (3:7). Due to the tests the test item does not have to be classified as oxidizing solid.

Interpretation of results:
GHS criteria not met
Conclusions:
The burning time of the mixtures of the test item with cellulose (4:1 and 1:1) was greater than the burning time of the reference mixture of potassium bromate and cellulose (3:7). Based on the test results the test item does not have to be classified as oxidizing solid.

In accordance with the results obtained in UN Test O.1 (Oxidising Properties, Solids) the test item is classified as follows:

UN Transport Regulation
The test item does not have to be classified as oxidizing solid in Division 5.1 according to the UN Transport Regulation.

GHS and EC 1272/2008 (CLP Regulation), Annex 1: 2.14
The test item does not have to be classified as oxidizing solid according to GHS and EC 1272/2008 (CLP Regulation) Annex 1: 2.14.

Description of key information

The test item does not have to be classified as oxidizing solid.

Key value for chemical safety assessment

Oxidising properties:
non oxidising

Additional information

The burning time of the mixtures of the test item with cellulose (4:1 and 1:1) was greater than the burning time of the reference mixture of potassium bromate and cellulose (3:7). Based on the test results the test item does not have to be classified as oxidizing solid.

In accordance with the results obtained in UN Test O.1 (Oxidising Properties, Solids) the test item is classified as follows:

UN Transport Regulation

The test item does not have to be classified as oxidizing solid in Division 5.1 according to the UN Transport Regulation.

GHS and EC 1272/2008 (CLP Regulation), Annex 1: 2.14

The test item does not have to be classified as oxidizing solid according to GHS and EC 1272/2008 (CLP Regulation) Annex 1: 2.14.

Justification for classification or non-classification

The test item does not have to be classified as oxidising substance. Hence, C&L is not required in accordance with the UN Transport Regulation and GHS and Regulation (EC) No 1272/2008 (CLP Regulation).