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Reference
Endpoint:
oxidising solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017-07-12 - 2018-03-06
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)
Version / remarks:
Rev. 6 (2015)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Specific details on test material used for the study:
Reference Item: Potassium bromate, 99 %
Batch No.: 10191952
Content: 99.7 %
Certificate of analysis: Certificate of Analysis of potassium bromate, 99 %, Alfa Aesar
Storage condition Closed container, dry at room temperature
Expiry date: 2018-10-17

Reagents: Cellulose Powder – TECHNOCEL 75
Batch No.: G03001614
Certificate of analysis: Certificate of Analysis dated 2017-03-08; CFF GmbH & Co. KG, Arnstädter Str. 2, 98708 Gehren, Germany
Storage condition Closed container, dry at room temperature
Expiry date: 2022-03-08
Contact with:
powdered cellulose
Duration of test (contact time):
< 10 min
Key result
Sample tested:
4:1 sample-to-cellulose ratio
Parameter:
mean burning time
Result:
> 180 s
Key result
Sample tested:
1:1 sample-to-cellulose ratio
Parameter:
mean burning time
Result:
> 180 s
Key result
Sample tested:
reference: 3:7 mixture potassium bromate + cellulose
Parameter:
mean burning time
Result:
135 s

Oxidizing properties

The results of the reference mixtures of potassium bromate and cellulose are shown in Table 1:

Table 1:    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

140

135

128

138

135

135

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.

The results of the mixtures of test item and cellulose are shown in Table 2:

Table 2:    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 CI Solubilised Sulphur Black 1 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.
Executive summary:

Summary

The burning time of the mixtures of the test item CI Solubilised Sulphur Black 1 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 has no oxidizing properties.

Key value for chemical safety assessment

Oxidising properties:
non oxidising

Additional information

The burning time of the mixtures of the test item Solubilised Sulphur Black 1 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.

Justification for classification or non-classification

Classification, Labelling, and Packaging Regulation (EC) No 1272/2008

The available experimental test data are reliable and suitable for classification purposes under Regulation (EC) No 1272/2008. Based on available data,the test item is not classified for oxidising properties according to Regulation (EC) No 1272/2008 (CLP), as amended for the twelfth time in Regulation (EU) No 2019/521.

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