Methyl 2,3-dibromopropionate

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising liquids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 2019-03-26 to 2019-03-28

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

Study performed to EU Method with no significant deviations and run in OECD GLP certified lab.

Qualifier:

according to guideline

Guideline:

EU Method A.21 (Oxidising Properties (Liquids))

Version / remarks:

2008

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Specific details on test material used for the study:

Purity: 98%
Batch No.: 800327680

Contact with:

powdered cellulose

Duration of test (contact time):

<= 60 s

Key result

Sample tested:

test mixture 1:1

Parameter:

mean pressure rise time

Result:

78.907 s

Remarks on result:

spontaneous ignition does not occur

Test Results

	Test item : Cellulose (1:1)	65% nitric acid : Cellulose (1:1
Test 1 pressure rise time (sec)	78.907	3.741
Test 2 pressure rise time (sec)	-	3.576
Test 3 pressure rise time (sec)	-	4.976
Test 4 pressure rise time (sec)	-	3.947
Test 5 pressure rise time (sec)	-	5.437
Mean pressure rise time (sec)	78.907	4.335
30 % of mean value (sec)	23.672	1.301
Acceptable data range (sec)	55.235 – 102.579	3.035 – 5.636

In total, five tests were conducted on the test item and cellulose mixture. In four of these tests the coil was observed to break before a pressure of 2070 kPa was achieved (possibly due to corrosion by the bromine present in the sample). In one of the tests a pressure of 2070 kPa was achieved, however the coil also broke in this test and the time taken to reach 2070 kPa was longer than it otherwise would have been.

Interpretation of results:

other: non oxidising

Conclusions:

The substance is not considered to be an oxidising liquid.

Executive summary:

The oxidizing test of the test substance was measured according to EU Method A.21 (Oxidising Properties (Liquids)).

 

In total, six tests were conducted on the test item and cellulose mixture. In five of these tests the coil was observed to break before a pressure of 2070 kPa was achieved (possibly due to corrosion by the bromine present in the sample). In one of the tests a pressure of 2070 kPa was achieved, however the coil also broke in this test and the time taken to reach 2070 kPa was longer than it otherwise would have been.

 

Based on the gradient of the graph before the coil broke the sample is not considered to be an oxidising liquid.

Description of key information

The oxidizing test of the test substance was measured according to EU Method A.21 (Oxidising Properties (Liquids)).

In total, six tests were conducted on the test item and cellulose mixture. In five of these tests the coil was observed to break before a pressure of 2070 kPa was achieved (possibly due to corrosion by the bromine present in the sample). In one of the tests a pressure of 2070 kPa was achieved, however the coil also broke in this test and the time taken to reach 2070 kPa was longer than it otherwise would have been.

Based on the gradient of the graph before the coil broke the sample is not considered to be an oxidising liquid.

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Justification for classification or non-classification

In accordance with Regulation (EC) No. 1272/2008 section 2.13 Table 2.13.1, a substance or mixture shall not be classified as oxidizing if any substance or mixture which, in the 1:1 mixture, by mass, of substance (or mixture) and cellulose tested, exhibits a mean pressure rise time less than or equal to the mean pressure rise time of a 1:1 mixture, by mass, of 65 % aqueous nitric acid and cellulose; and the criteria for Category 1 and 2 are not met.

As a 1:1 mixture of the substance and cellulose exhibited a mean pressure rise time longer than the mean pressure rise time of a 1:1 mixture of 65 % aqueous nitric acid and cellulose, the substance should not be classified for oxidising liquid.