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Physical & Chemical properties

Auto flammability

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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1994-02-18 to 1994-03-02
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
The EU Method A.15 is applicable to gases, liquids and vapours which, in the presence of air, can be ignited by a hot surface. Since the substances melts at 51.9 °C, the test system is considered as valid for that test item.
Qualifier:
according to guideline
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Version / remarks:
1992
Deviations:
yes
Remarks:
Please refer to the field "Rationale for reliability incl. deficiencies" above
Qualifier:
according to guideline
Guideline:
IEC 60079-4 (Electrical apparatus for explosive gas atmospheres. Part 4: Method of test for ignition temperature)
Version / remarks:
1987
Deviations:
not specified
GLP compliance:
yes (incl. QA statement)
Remarks:
signed 1994-03-16
Key result
Auto-ignition temperature:
345 °C
Atm. press.:
>= 100 - <= 101.83 kPa
Remarks on result:
other: ± 5 °C

RESULTS

Test temperature (°C)

Test weight (g)

Ignition delay (s)

Observations

50,

100

0.2

> 300

No ignition

150

0.2

> 300

No ignition, a small amount of smoke was evolved.

200

0.2

> 300

No ignition, smoke was evolved.

250 (Clean flask),

300,

350

0.2

> 300

No ignition, white fumes were evolved

400

0.2

15

Very large orange flame

380 (Clean flask)

0.2

11

Large orange flame

360

0.2

> 300

No ignition, white fumes were evolved

370

0.2

> 300

No ignition, white fumes were evolved.

375

0.2

12

Large orange flame.

371

0.2

11

Orange flame.

371 (Clean flask)

0.2

11

Orange flame.

369 (Clean flask)

0.2

8

Orange flame

361

0.2

11

Orange flame.

351,

355,

357

0.2

> 300

No ignition, white fumes were evolved.

359

0.2

14

Orange flame

359 (Clean flask),

361 (Clean flask)

0.2

> 300

No ignition, white fumes were evolved.

363 (Clean flask)

0.2

8

Orange flame

361 (Clean flask)

0.4

12

Orange flame

359 (Clean flask)

0.4

14

Orange flame

357

0.4

13

Orange flame

351

0.4

10

Orange flame

343

0.4

> 300

No ignition, white fumes were evolved

347

0.4

10

Orange flame

345 (Clean flask)

0.4

10

Orange flame

343 (Clean flask)

0.4

> 300

No ignition, white fumes were evolved

343 (Clean flask)

0.6

> 300

No ignition, white fumes were evolved

343 (Clean flask)

0.8

> 300

No ignition, white fumes were evolved

343 (Clean flask)

1.0

> 300

No ignition, white fumes were evolved

343 (Clean flask)

1.2

> 300

No ignition, white fumes were evolved

Room temperature = 12 to 25 °C

Atmospheric pressure = 100.00 to 101.83 kPa

Conclusions:
According to Council Directive 92/69/EEC A.15, the auto-ignition temperature of the test item was determined to be 345 ± 5 °Cat 100.00 - 101.83 kPa.

Description of key information

The auto-ignition temperature of the test item was determined to be 345 ± 5 °C at 100.00 - 101.83 kPa.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
345 °C

Additional information