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Diss Factsheets

Physical & Chemical properties

Auto flammability

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
from 2017-11-20 to 2018-01-17
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Deviations:
no
Qualifier:
according to guideline
Guideline:
ASTM E659 (Standard test method for autoignition temperature of liquid chemicals)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Key result
Auto-ignition temperature:
318 °C
Atm. press.:
1 013 hPa

The temperature was registered in case of each experiment outside and inside the flask. The temperature distribution was steady outside the flask. The ignition delay time was determined when ignition was observed.

 

Temperature
(flask inside)

External Temperature

Ignition delay time

Sample amount

Ignition

29 °C

30 °C

-

0.36 g

-

62 °C

64 °C

-

0.15 g

-

89 °C

94 °C

-

0.15 g

-

116 °C

124 °C

-

0.12 g

-

147 °C

151 °C

-

0.12 g

-

178 °C

181 °C

-

0.14 g

-

209 °C

210 °C

-

0.08 g

-

241 °C

239 °C

-

0.10 g

-

270 °C

266 °C

-

0.14 g

-

302 °C

296 °C

-

0.17 g

-

333 °C

326 °C

-

0.14 g

-

362 °C

355 °C

25 sec

0.15 g

+

357 °C

356 °C

25 sec

0.11 g

+

353 °C

347 °C

30 sec

0.12 g

+

351 °C

344 °C

20 sec

0.14 g

+

348 °C

340 °C

25 sec

0.16 g

+

345 °C

336 °C

30 sec

0.13 g

+

342 °C

335 °C

35 sec

0.11 g

+

339°C

333 °C

20 sec

0.10 g

+

337 °C

330 °C

20 sec

0.14 g

+

333 °C

327 °C

15 sec

0.09 g

+

331 °C

324 °C

20 sec

0.16 g

+

327 °C

322 °C

15 sec

0.11 g

+

324 °C

322 °C

15 sec

0.13 g

+

321 °C

319 °C

15 sec

0.09 g

+

318 °C

313 °C

40 sec

0.11 g

+

316 °C

312 °C

-

0.09 g

-

312 °C

308 °C

-

0.11 g

-

309 °C

305 °C

-

0.09 g

-

306 °C

302 °C

-

0.14 g

-

303 °C

298 °C

-

0.10 g

-

301 °C

295 °C

-

0.15 g

-

301 °C

294 °C

-

0.43 g

-

304 °C

297 °C

-

0.49 g

-

306 °C

299 °C

-

0.53 g

-

309 °C

305 °C

-

0.52 g

-

311 °C

312 °C

-

0.47 g

-

315 °C

314 °C

-

0.49 g

-

315 °C

310 °C

-

0.48 g

-

318 °C

316 °C

-

0.56 g

-

321 °C

319 °C

-

0.45 g

-

323 °C

321 °C

-

0.47 g

-

327 °C

320 °C

20 sec

0.47 g

+

 

 

 

- not ignited

+ ignited

 

The auto-ignition temperature of the Test Item was determined to be 318 °C.

Conclusions:
The auto-ignition of the test item was determined to be 318 °C.
Executive summary:

A study was conducted according to Regulation (EC) No 440/2008 Part A.15 and ASTM E 659 - 15 (2015) to determine the auto-ignition temperature of the test substance. A small sample of the test item was injected into a uniformly heated 500 mL glass flask containing air at a predetermined temperature. After the internal flask temperature had reached the desired temperature the system was allowed to equilibrate. A weight of ca. 100 mg of the test item was injected into the flask and the timer was started. Auto-ignition was evidenced by a sharp rise in the temperature inside the flask. If ignition was not observed in 10 minutes, the sample was considered to be non-flammable at the tested gas temperature and at the applied concentration in the flask. The procedure was repeated using ca. 500 mg samples until the minimum auto-ignition temperature was obtained. The auto-ignition temperature of the test item was determined to be 318 °C.

Description of key information

The auto-ignition temperature of the test item was determined to be 318 °C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
318 °C

Additional information

A study was conducted according to Regulation (EC) No 440/2008 Part A.15 and ASTM E 659 - 15 (2015) to determine the auto-ignition temperature of the test substance.A small sample of the test item was injected into a uniformly heated 500 mL glass flask containing air at a predetermined temperature. After the internal flask temperature had reached the desired temperature the system was allowed to equilibrate. A weight of ca. 100 mg of the test item was injected into the flask and the timer was started. Auto-ignition was evidenced by a sharp rise in the temperature inside the flask. If ignition was not observed in 10 minutes, the sample was considered to be non-flammable at the tested gas temperature and at the applied concentration in the flask. The procedure was repeated using ca. 500 mg samples until the minimum auto-ignition temperature was obtained. The auto-ignition temperature of the test item was determined to be 318 °C.