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Diss Factsheets

Physical & Chemical properties

Oxidising properties

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Endpoint:
oxidising solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1990-08-09 to 1990-10-18
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.17 (Oxidising Properties (Solids))
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Contact with:
powdered cellulose
Key result
Sample tested:
reference mixture (not specified)
Parameter:
maximum burning rate
Result:
0.69 mm/s
Key result
Sample tested:
test mixture (not specified)
Parameter:
maximum burning rate
Result:
0.833 mm/s
Remarks on result:
other: Test substance dried and sieved
Key result
Sample tested:
test mixture (not specified)
Parameter:
maximum burning rate
Result:
0.922 mm/s
Remarks on result:
other: Test substance in its commercial form

Reference substance mixtures

 

% Barium nitrate

Observations

Burning time (s)

Burning rate (mm/s)

10

The pile burned with a non-vigorous yellow-green flame, evolving a small amount of grey smoke

290

0.690

20

The pile burned with a non-vigorous yellow-green flame, evolving a small amount of grey smoke

323

0.619

30

The pile burned with a non-vigorous mainly green flame, evolving a small amount of grey smoke

368

0.543

40

The pile burned with a non-vigorous mainly green flame, evolving a small amount of grey smoke

353

0.567

50

The pile burned with a fairly vigorous green flame, evolving a small amount of grey smoke

329

0.608

60

The pile burned with a vigorous green flame

397

0.504

70

The pile burned with a vigorous green flame

539

0.371

80

The pile burned for approx. 60 s but failed to propagate combustion beyond the initial burning distance of 30 mm

 -

 -

90

The pile burned for approx. 10 s with a non-vigorous yellow-green flame, but failed to propagate combustion beyond the initial burning distance of 30 mm

 -

 -

 

Maximum burning rate = 0.690 mm/s

Mixtures with sieved and dried test substance:

% Test substance

Observations

Burning time (s)

Burning rate (mm/s)

10

The pile burned with a small yellow flame, evolving a small amount of grey smoke

240

0.833

20

The pile burned with a small yellow flame, evolving a small amount of grey smoke

265

0.755

30

The pile burned with a small yellow flame, evolving a small amount of grey smoke

290

0.690

40

The pile burned with a small yellow flame, evolving a small amount of grey smoke

309

0.674

50

The pile burned with a small yellow flame, evolving a small amount of grey smoke

370

0.541

60

The pile burned with a non-vigorous flame

437

0.458

70

The pile did not propagate combustion further than the initial burning distance of 30 mm

 -

 -

80

The pile did not propagate combustion further than the initial burning distance of 30 mm

 -

 -

90

The pile did not propagate combustion further than the initial burning distance of 30 mm

 -

 -

10

The pile burned with a small orange flame, evolving a small amount of grey smoke

297

 0.673

10

The pile burned with a small orange flame, evolving a small amount of grey smoke

264

0.758

10

The pile burned with a small orange flame, evolving a small amount of grey smoke

271

o.738

10

The pile burned with a small orange flame, evolving a small amount of grey smoke

261

0.766

10

The pile burned with a small orange flame, evolving a small amount of grey smoke

266

0.752

20

The pile burned with a small orange flame, evolving grey-black smoke

253

0.791

20

The pile burned with a small orange flame, evolving grey-black smoke

275

0.727

20

The pile burned with a small orange flame, evolving grey-black smoke

268

0.746

20

The pile burned with a small orange flame, evolving grey-black smoke

275

0.727

20

The pile burned with a small orange flame, evolving grey-black smoke

256

0.781

30

The pile burned with a small orange and blue flame, evolving black smoke

266

0.752

30

The pile burned with a small orange and blue flame, evolving black smoke

259

0.772

30

The pile burned with a small orange and blue flame, evolving black smoke

316

0.633

30

The pile burned with a small orange and blue flame, evolving black smoke

300

0.667

30

The pile burned with a small orange and blue flame, evolving black smoke

291

0.687

Maximum burning rate = 0.833 mm/s;

Mixtures with test substance in its commercial form: 

% Test substance

Observations

Burning time (s)

Burning rate (mm/s)

10

The pile burned with an orange flame

326

0.613

20

The pile burned with an orange flame, evolving grey-black smoke

305

0.656

30

The pile burned with an orange flame, evolving grey-black smoke

319

0.627

40

The pile burned with an orange flame, evolving grey-black smoke

402

0.498

50

The pile burned with an orange flame, evolving grey-black smoke

451

0.443

60

The pile burned with an orange flame which self-extinguished after propagating 14 mm

141

0.099

70

The pile burned with an orang flame, but failed to propagate further than the initial burning distance of 30 mm

 -

 -

80

The pile failed to support combustion

 -

 -

90

The pile failed to support combustion

 -

 -

10

The pile burned with a non-vigorous orange-yellow flame, evolving a small amount of grey smoke

217

 0.992

10

The pile burned with a non-vigorous orange-yellow flame, evolving a small amount of grey smoke

223

0.897

10

The pile burned with a non-vigorous orange-yellow flame, evolving a small amount of grey smoke

246

0.813

10

The pile burned with a non-vigorous orange-yellow flame, evolving a small amount of grey smoke

230

0.870

10

The pile burned with a non-vigorous orange-yellow flame, evolving a small amount of grey smoke

253

0.791

20

The pile burned with a non-vigorous orange-yellow flame, evolving a small amount of grey-black smoke

228

0.877

20

The pile burned with a non-vigorous orange-yellow flame, evolving a small amount of grey-black smoke

265

0.755

20

The pile burned with a non-vigorous orange-yellow flame, evolving a small amount of grey-black smoke

257

0.778

20

The pile burned with a non-vigorous orange-yellow flame, evolving a small amount of grey-black smoke

285

0.702

20

The pile burned with a non-vigorous orange-yellow flame, evolving a small amount of grey-black smoke

288

0.694

20

The pile burned with a non-vigorous orange-yellow flame, evolving a small amount of grey-black smoke

277

0.722

30

The pile burned with an orange-yellow flame, evolving black smoke

268

0.746

30

The pile burned with an orange-yellow flame, evolving black smoke

271

0.738

30

The pile burned with an orange-yellow flame, evolving black smoke

263

0.760

30

The pile burned with an orange-yellow flame, evolving black smoke

319

0.627

30

The pile burned with an orange-yellow flame, evolving black smoke

328

0.610

 

Maximum burning rate = 0.922 mm/s;

Interpretation of results:
GHS criteria not met
Conclusions:
D-8 was tested for oxidising properties in a test according to EU Gudeline A.17. D-8 was determined to be an oxidiser since the maximum burning rate of the test substance mixtures with cellulose was greater than that of the reference substance mixtures with cellulose. However, as the test substance is a solid with a comparatively low melting point, this result was considered a false positive.
In a repeat experiment, D-8 did not support combustion when mixed with an inert material, celite. C Consequently, the result obtained in the standard oxidising properties test A.17 could be considered valid.
Executive summary:

D-8 was tested for oxidising properties in a test according to EU Gudeline A.17.The test substance and cellulose were mixed in various weight proportions (from 10/90 to 90/10).Each mixture was formed into a train about 250 mm long and the hot flame of a propane/butane gas burner was applied to one end of the train.The burning rate was measured over 200 mm after the reaction zone has propagated an initial distance of 30 mm.This test was performed for each mixture, repeated six times for each of the three mixtures revealing the fastest burning rate.

D-8 was determined to be an oxidiser, since the maximum burning rate of the test substance mixtures with cellulose was greater than that of the reference substance mixtures with cellulose. However, as the test substance is a solid with a comparatively low melting point however, this result was considered a false positive. Further testing was therefore proposed and undertaken in order to distinguish between the two effects.

Part of the study was repeated, with cellulose replaced by an inert substance, celite. Celite would not be affected by any oxidising properties of the test substance. D-8 did not support combustion when mixed with celite. Consequently, the result obtained in the standard oxidising properties test A.17 could be considered valid.

Endpoint:
oxidising gases
Data waiving:
study technically not feasible
Justification for data waiving:
the study does not need to be conducted because the substance is a solid
Endpoint:
oxidising liquids
Data waiving:
study technically not feasible
Justification for data waiving:
the study does not need to be conducted because the substance is a solid

Description of key information

D-8 was tested for oxidising properties in a test according to EU Gudeline A.17. D-8 was not considered an oxidiser.

Key value for chemical safety assessment

Oxidising properties:
non oxidising

Additional information

D-8 was tested for oxidising properties in a test according to EU Gudeline A.17.The test substance and cellulose were mixed in various weight proportions (from 10/90 to 90/10).Each mixture was formed into a train about 250 mm long and the hot flame of a propane/butane gas burner was applied to one end of the train.The burning rate was measured over 200 mm after the reaction zone has propagated an initial distance of 30 mm.This test was performed for each mixture, repeated six times for each of the three mixtures revealing the fastest burning rate.

D-8 was determined to be an oxidiser, since the maximum burning rate of the test substance mixtures with cellulose was greater than that of the reference substance mixtures with cellulose. However, as the test substance is a solid with a comparatively low melting point, this result was considered a false positive. Further testing was therefore proposed and undertaken in order to distinguish between the two effects.

Part of the study was repeated, with cellulose replaced by an inert substance, celite. Celite would not be affected by any oxidising properties of the test substance. D-8 did not support combustion when mixed with celite. Consequently, the result obtained in the standard oxidising properties test A.17 could be considered valid.

Justification for classification or non-classification

Classification, Labelling, and Packaging Regulation (EC) No 1272/2008

Based on the chemical structure and taking into account the provisions laid down in Regulation (EC) No 1272/2008, as amended for the twelfth time in Regulation (EU) No 2019/521, the substance is not considered to be classified for oxidising properties.