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Diss Factsheets

Administrative data

Endpoint:
oxidising solids
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study without detailed documentation

Data source

Reference
Reference Type:
other: reference to SNIF-file
Title:
Unnamed
Year:
1988
Report date:
1988

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method A.17 (Oxidising Properties (Solids))
Version / remarks:
84/449/EEC
Deviations:
not specified
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid

Study design

Contact with:
powdered cellulose

Results and discussion

Test results (Oxidising solids)open allclose all
Key result
Sample tested:
test mixture (not specified)
Parameter:
maximum burning rate
Result:
5.13 mm/s
Remarks on result:
other: no oxidising properties
Key result
Sample tested:
reference mixture as specified
Remarks:
Ba nitrate/cellulose 60/40%
Parameter:
maximum burning rate
Result:
3.39 mm/s

Any other information on results incl. tables

When conducting the test the test substance mixed with the cellulose ignited and burned. But the fast burning was obviously not due to oxidising properties. It can be attributed to the fact that the molten substance was distributed on the cellulose fibre which provided good conditions for a fast burning.

In agreement with the competent authority, it was decided that the substance should not be classified as an oxidizing substance for EC, because the high burning rate in the A.17-test was caused by the flammable properties of the substance (enhanced by the fact that the molten substance spread out on the large surface of the cellulose fibres and not by its oxidizing properties. This was confirmed by repeating the A.17-test, but with the modification that the cellulose was replaced by an inert material, namely, kieselgur. The same value of 5.13 mm/s was found.

- Test details :

- test samples were dried at 90 C/18 h because of low melting point (98 C)

- maximum particle size 0.125 mm for both test and reference substances , and for the cellulose and the kieslgur

- ignition source: Bunsen burner

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Conclusions:
The oxidising properties of the substance were investigated in a study according to EU A.17 method. The substance proved to be not oxidizing.