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Physical & Chemical properties

Oxidising properties

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Reference
Endpoint:
oxidising properties
Type of information:
experimental study
Adequacy of study:
key study
Study period:
04 October 2016 to 19 December 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Qualifier:
according to
Guideline:
EU Method A.17 (Oxidising Properties (Solids))
Version / remarks:
2008
Deviations:
no
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
Specific details on test material used for the study:
The test material is a fine powder and tested in its commercial state.
Contact with:
powdered cellulose
Duration of test (contact time):
3 min
Key result
Sample tested:
1:1 sample-to-cellulose ratio
Parameter:
burning rate
Result:
> 180 s
Remarks on result:
mixture does not ignite and burn
Key result
Sample tested:
4:1 sample-to-cellulose ratio
Parameter:
burning rate
Result:
> 180 s
Remarks on result:
mixture does not ignite and burn

The burning rates of the test material and reference mixtures are given in Tables 1 and 2. The mean burning time of both test material mixtures was more than the mean burning time of the 3:7 (w/w) reference mixture. According to this, the test material has no oxidising properties.

 

Table 1: Burning rates of potassium bromate / cellulose mixtures

Potassium bromate/cellulose (w/w)

Burning time [s]

Mean burning time [s]

3:7

110

105

103

105

105

101

2:3

50

49

48

48

48

51

3:2

21

20

22

20

19

19

 

Table 2: Burning rates of test material / cellulose mixtures

Test material/cellulose (w/w)

Burning time [s]

Mean burning time [s]

4:1

>180

>180

>180

>180

>180

>180

1:1

>180

>180

>180

>180

>180

>180

 

Interpretation of results:
other: Not oxidising in accordance with EU criteria
Conclusions:
Under the conditions of this study, the test material was determined to have no oxidising properties.
Executive summary:

The oxidising properties of the test material were investigated in accordance with the standardised guidelines EU Method A.17 and UN Test O.1 under GLP conditions.

Mixtures of potassium bromate and cellulose in a 3:7, 2:3 and 3:2 (w/w) ratio were prepared and test material-cellulose mixtures were prepared at a 4:1 and 1:1 (w/w) ratio. The burning time of the mixtures was determined, if applicable.

The mean burning time of both test material mixtures was more than the mean burning time of the 3:7 (w/w) reference mixture.

Under the conditions of this study, the test material was determined to have no oxidising properties.

Description of key information

The test material was determined to have no oxidising properties.

Key value for chemical safety assessment

Oxidising properties:
non oxidising

Additional information

The oxidising properties of the test material were investigated in accordance with the standardised guidelines EU Method A.17 and UN Test O.1 under GLP conditions. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).

Mixtures of potassium bromate and cellulose in a 3:7, 2:3 and 3:2 (w/w) ratio were prepared and test material-cellulose mixtures were prepared at a 4:1 and 1:1 (w/w) ratio. The burning time of the mixtures was determined, if applicable.

The mean burning time of both test material mixtures was more than the mean burning time of the 3:7 (w/w) reference mixture.

Under the conditions of this study, the test material was determined to have no oxidising properties.

Justification for classification or non-classification

In accordance with the criteria for classification as defined in Annex I, Regulation (EC) No 1272/2008, the substance does not require classification with respect to oxidising properties.