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Auto flammability

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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
16 november 2016 - 18 november 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
comparable to guideline study
Qualifier:
equivalent or similar to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Version / remarks:
The determination was carried out using a procedure* designed to be compatible with Method A.15 Auto-Ignition Temperature (Liquids and Gases) of Commission Regulation (EC) No 440/2008 of 30 May 2008.
Apparatus: Carbolite flask heater

* Based on, Anon (1987), Electrical Apparatus for Explosive Gas Atmospheres. Part 4: Method of Test for Ignition Temperature. IEC Publications 79-4, P1-19.
GLP compliance:
yes (incl. certificate)
Key result
Auto-ignition temperature:
286 °C
Atm. press.:
>= 101 - <= 102 kPa

 Performance of the Test

The test flask was heated in a flask heater. Aliquots of test item (tested as received) were injected into the flask using a syringe and the flask was observed for signs of ignition over a 300 second period. This procedure was repeated, varying the sample size, as necessary, until the lowest temperature at which ignition, if any, occurred within 300 seconds of insertion, was determined. Where clean flasks were not used, the flask was flushed with air between sample insertions.

 Evaluation of Data

The auto-ignition temperature is the lowest temperature that will result in the ignition of the test item after being injected into the test flask.

The room temperature and atmospheric pressure is recorded for each day of the test.

 Results

Results of the auto-ignition temperature determination are shown in the following table:

Table 1

Temperature (ºC)

Clean Flask (Yes/No)

Volume (µL)

Ignition Delay (s)

Observations

200

Yes

70

>300

No ignition, grey fumes emitted

250

Yes

70

>300

No ignition, grey fumes emitted

300

Yes

70

17

Orange flame, grey fumes emitted

290

No

70

>300

No ignition, grey fumes emitted

292

No

70

>300

No ignition, grey fumes emitted

294

No

70

21

Orange flame, grey fumes emitted

292

Yes

70

>300

No ignition, grey fumes emitted

292

Yes

200

>300

No ignition, grey fumes emitted

292

Yes

400

25

Orange flame, grey fumes emitted

290

Yes

400

>300

No ignition, grey fumes emitted

290

Yes

600

31

Orange flame, grey fumes emitted

288

Yes

600

30

Orange flame, grey fumes emitted

286

Yes

600

>300

No ignition, grey fumes emitted

286

Yes

800

38

Orange flame, grey fumes emitted

284

Yes

800

>300

No ignition, grey fumes emitted

284

Yes

1000

>300

No ignition, grey fumes emitted

284

Yes

1200

>300

No ignition, grey fumes emitted

284

Yes

1400

>300

No ignition, grey fumes emitted

284

Yes

1600

>300

No ignition, grey fumes emitted

Room temperature:               20°C
Atmospheric pressure:         101 to 102kPa
Observed result:                   286 °C

Conclusions:
The test item has been determined to have an auto-ignition temperature of 286 °C.
Executive summary:

The test item has been determined to have an auto-ignition temperature of 286 °C at an atmospheric pressure of 101 to 102 kPa according to a procedure designed to be compatible with Method A.15 Auto-Ignition Temperature (liquids and Gases).

Description of key information

The test item Dimeth Cyclormol has been determined to have an auto-ignition temperature of 286 °C at an atmospheric pressure of 101 to 102 kPa according to a procedure designed to be compatible with Method A.15 Auto-Ignition Temperature (liquids and Gases).

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
286 °C

Additional information