2-{2-chloro-4-mesyl-3-[(tetrahydrofuran-2-ylmethoxy)methyl]benzoyl}cyclohexane-1,3-dione

Oxidising properties

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

26 Nov 2012 - 28 Nov 2012

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

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

GLP compliance:

yes (incl. QA statement)

Remarks:

Hess. Ministerium für Umwelt, Energie, Landwirtschaft und Verbraucherschutz, Wiesbaden, Germany

Contact with:

powdered cellulose

Sample tested:

other: 2:1 sample to cellulose ratio

Parameter:

preliminary test

Remarks on result:

other: could not be ignited, only partly melting and short burning was observed while the flame was applied

Sample tested:

other: 2:1 barium nitrate to cellulose ratio

Parameter:

preliminary test

Result:

>= 63 - < 64 s

Key result

Sample tested:

reference mixture as specified

Parameter:

maximum burning rate

Result:

1.49 mm/s

Remarks on result:

other: Four tests were performed for the reference mixture (barium nitrate and cellulose) with 50, 55, 60 and 70 wt.% of barium nitrate. The highest burning rate was found for the mixture with 60 wt.% of oxidiser.

Sample tested:

test mixture as specified

Parameter:

maximum burning rate

Result:

1.25 mm/s

Remarks on result:

other: Eight tests were performed for the test item mixture (test item and cellulose) with 5, 10, 20, 30, 40, 50, 60 and 100 wt.% test item. The highest burning rate was found for the mixture with 10 wt.% of test item.

Key result

Sample tested:

test mixture as specified

Parameter:

maximum burning rate

Result:

1.25 mm/s

Remarks on result:

other: Six tests were performed for each of the test item mixtures (test item and cellulose) with 5, 10 and 20 wt.% test item. The highest burning rate was found for the mixture with 10 wt.% of test item.

Key result

Sample tested:

1:1 sample-to-cellulose ratio

Parameter:

burning time of reaction over a distance of 200 mm

Remarks on result:

other: The mixture extinguished after 10 mm and 80 s.

Due to the fact that the mixture of the test item with cellulose (maximum burning rate 1.25 mm/s) burned slower compared to the reference mixture, it was concluded that the test item, technical substance, has no oxidising properties in the sense of EU Method A.17.

Reference 2

Endpoint:

oxidising solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

20 Aug 2012 - 28 Aug 2012

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

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

GLP compliance:

yes (incl. QA statement)

Remarks:

Hess. Ministerium für Umwelt, Energie, Landwirtschaft und Verbraucherschutz, Wiesbaden, Germany

Contact with:

powdered cellulose

Sample tested:

other: 2:1 sample to cellulose ratio

Parameter:

preliminary test

Remarks on result:

other: could not be ignited, melting observed

Sample tested:

other: 2.1 barium nitrate to cellulose ratio

Parameter:

preliminary test

Result:

>= 62 - < 64 s

Key result

Sample tested:

reference mixture as specified

Parameter:

maximum burning rate

Result:

1.49 mm/s

Remarks on result:

other: Four tests were performed for the reference mixture (barium nitrate and cellulose) with 50, 55, 60 and 70 wt.% of barium nitrate. The highest burning rate was found for the mixture with 60 wt.% of oxidiser.

Sample tested:

test mixture as specified

Parameter:

maximum burning rate

Result:

1.07 mm/s

Remarks on result:

other: Eight tests were performed for the test item mixture (test item and cellulose) with 5, 10, 15, 20, 30, 40, 50 and 100 wt.% test item. The highest burning rate was found for the mixture with 5 wt.% of test item.

Key result

Sample tested:

test mixture as specified

Parameter:

maximum burning rate

Result:

1.1 mm/s

Remarks on result:

other: Six tests were performed for each of the test item mixtures (test item and cellulose) with 5, 10 and 15 wt.% test item. The highest burning rate was found for the mixture with 10 wt.% of test item.

Key result

Sample tested:

1:1 sample-to-cellulose ratio

Parameter:

burning time of reaction over a distance of 200 mm

Remarks on result:

other: the test item melted and the flame extinguished before the pre-burning phase was finished

Due to the fact that the mixture of the test item with cellulose (maximum burning rate 1.10 mm/s) burned slower compared to the reference mixture, it was concluded that the test item, pure substance, has no oxidising properties in the sense of EU Method A.17.

Description of key information

The mixture of the test item, pure and technical substance, with cellulose burned slower compared to the reference mixture. The test item has no oxidising properties in the sense of EU Method A.17. (EU Test A.17)

Furthermore it can be concluded that the test item also has no oxidising properties in the sense of CLP (see Justification for classification or non-classification).

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Justification for classification or non-classification

The available data on oxidising properties of the test substance do not meet the criteria for classification according to Regulation (EC) 1272/2008, and are therefore conclusive but not sufficient for classification:

Two tests (for pure substance and technical substance) were performed according EU Method A.17 which was used to deduce the oxidising properties of solids under DSD/DPD. The result is "not oxidising in the sense of EU Test A.17". Criteria for classification or non-classification as an oxidising solid according to CLP are based on UN Test O.1 (or UN Test O.3). The principle of EU Method A.17 is quite similar to that of UN Test O.1, but the set-up and the criteria of the test method are somewhat different. Nevertheless from the overall result "not oxidising" and the details of the results of these tests it can be deduced, that the substance is not oxidising according to CLP: In the test of the 1:1 mixture (test item to cellulose) the flame extinguished rapidly (pure substance: before the pre-burning phase was finished, technical substance: after 10 mm and 80 s). From results of all mixtures it can be extrapolated that the burning behaviour of a 4:1 mixture is even worse to that of the 1:1 mixture.

According the decision logic for oxidising solids (GHS, Decision logic 2.14), a substance which in the 4:1 or 1:1 sample to cellulose mixtures does not ignite or burn does not need to be classified.