3-chlorophthalic anhydride

Oxidising properties

Administrative data

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2005

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2005

Report date:

2005

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method A.17 (Oxidising Properties (Solids))

Version / remarks:

1992

Deviations:

no

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

3-chlorophthalic anhydride

EC Number:

204-179-8

EC Name:

3-chlorophthalic anhydride

Cas Number:

117-21-5

Molecular formula:

C8H3ClO3

IUPAC Name:

4-chloro-1,3-dihydro-2-benzofuran-1,3-dione

Study design

Contact with:

powdered cellulose

Results and discussion

Test results (Oxidising solids)

Sample tested:

other: ranges from 0:100 sample-to-cellulose ratio to 10:90 sample-to-cellulose ratio

Parameter:

burning rate

Result:

1.5 mm/s

Remarks on result:

other: this value is the maximum burn rate noted

Any other information on results incl. tables

Mixtures of Test Substance 3-chlorophthalic anhydride (3-CLPA) with cellulose, in the weight % range of 0/100 to 90/10 (3-CLPA/cellulose), were formed into rows and burned in air. The burn rates of these mixtures generally decreased as the 3-CLPA content increased, indicating that 3-CLPA inhibited the combustion of cellulose. In addition, the maximum 3-CLPA/cellulose burn rate of 1.5 mm/s (5 wt % 3-CLPA) was significantly slower than the maximum average burn rate of the Reference Substance barium nitrate/cellulose 60/40 mixture of 2.7 +/- 0.3 mm/s.  Therefore, it was concluded that 3-CLPA did not have oxidizing properties under the conditions of this test.

Applicant's summary and conclusion

Interpretation of results:

GHS criteria not met

Conclusions:

The test substance was determined to be not oxidising.

Executive summary:

The oxidising properties of the test substance were assessed in a GLP-compliant study performed according to EU method A. 17. Ranges from 0:100 up to 10:90 sample-to-cellulose ratio were formed into rows and burned in air. As the substance concentration increased, the burn rate of the mixtures generally decreased, indicating an inhibitory effect. The maximum burn rate found was 1.5 mm/s which was significantly slower than the maximum average burn rate of the reference substance. Therefore, the test substance is considered not to be oxidising.