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Reference
Endpoint:
oxidising solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
27 October 2000
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.17 (Oxidising Properties (Solids))
GLP compliance:
yes
Specific details on test material used for the study:
Appearance: Light brown solid
Storage conditions: Room temperature in the dark
Expiry date: September 2004
Contact with:
powdered cellulose
Key result
Sample tested:
1:1 sample-to-cellulose ratio
Parameter:
preliminary test
Result:
239 s
Sample tested:
other: 2:1, test substance/ cellulose ratio
Parameter:
preliminary test
Result:
310 s
Sample tested:
other: 1:2, Test substance/ Cellulose Ratio
Parameter:
preliminary test
Result:
155 s

 Test Substance/Cellulose Ratio  Duration of Combustion (seconds)  Observation
 2:1 310   Burned with yellow flame, but not to completion
 1:1  239  Burned with yellow flame, but not to completion
 1:2  155  Burned with yellow flame, but not to c
Interpretation of results:
GHS criteria not met
Conclusions:
As none of the test substance/cellulose mixtures burned to completion, the test substance was considered to be non-oxidising.
Executive summary:

The substance to be tested and a defined combustible substance, cellulose, are mixed in various ratios. Each mixture is formed into a pile and ignited at one end. The maximum burning rate determined is compared with the maximum burning rate of the reference mixture of cellulose and barium nitrate.A substance is considered as possessing oxidising properties when the maximum burning rate of the test mixtures is higher than, or equal to, the maximum burning rate of the reference mixture.

The test substance, cellulose and barium nitrate used as a reference were dried and sieved (125 gm) prior to use.

The dried test substance (2 parts) was thoroughly mixed with dried cellulose (1 part) and formed into a cone shaped pile of dimensions 3.5 cm (diameter of base) x 2.5 cm (height). The cone, on a non­combustible, non-porous surface was ignited with a gas burner. The vigour and duration of the combustion were observed, recorded and compared with that of a similarly prepared cone consisting of 3 parts of barium nitrate to 2 parts of cellulose.

As the sample cone failed to burn to completion, cones consisting of test substance (1 part) and cellulose (1 and 2 parts) were prepared and tested.

The barium nitrate reference burned vigorously to completion in 35 seconds.

The following observations were noted for each of the test substance samples:

 Test Substance/Cellulose Ratio  Duration of Combustion (seconds)  Observation
 2:1 310   Burned with yellow flame, but not to completion
 1:1  239  Burned with yellow flame, but not to completion
 1:2  155  Burned with yellow flame, but not to c

As none of the test substance/cellulose mixtures burned to completion, the test substance was considered to be non-oxidising

Description of key information

As none of the test substance/cellulose mixtures burned to completion, the test substance was considered to be non-oxidising

Key value for chemical safety assessment

Oxidising properties:
non oxidising

Additional information

Justification for classification or non-classification

As none of the test substance/cellulose mixtures burned to completion, the test substance was considered to be non-oxidising