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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018
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))
Version / remarks:
2008
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:
283 °C
Atm. press.:
1 013.25 hPa

Auto-ignition test results with 100 µL

Temperature
(flask inside)

External Temperature

Ignition

Sample amount

Ignition delay time

134 °C

146 °C

100 µL

n.a.

162 °C

158 °C

100 µL

n.a.

191 °C

191 °C

100 µL

n.a.

226 °C

225 °C

100 µL

n.a.

254 °C

249 °C

100 µL

n.a.

280 °C

279 °C

+

100 µL

45 sec

251 °C

250 °C

100 µL

n.a.

253 °C

250 °C

100 µL

n.a.

257 °C

255 °C

100 µL

n.a.

259 °C

258 °C

100 µL

n.a.

263 °C

261 °C

100 µL

n.a.

265 °C

263 °C

100 µL

n.a.

268 °C

266 °C

100 µL

n.a.

271 °C

270 °C

100 µL

n.a.

274 °C

272 °C

100 µL

n.a.

277 °C

275 °C

100 µL

n.a.

280 °C

279 °C

100 µL

n.a.

282 °C

278 °C

100 µL

n.a.

286 °C

285 °C

100 µL

n.a.

290 °C

293 °C

100 µL

n.a.

291 °C

291 °C

100 µL

n.a.

295 °C

292 °C

100 µL

n.a.

298 °C

298 °C

100 µL

n.a.

301 °C

299 °C

100 µL

n.a.

304 °C

303 °C

100 µL

n.a.

307 °C

306 °C

100 µL

n.a.

310 °C

310 °C

+

100 µL

20 sec

313 °C

309 °C

+

100 µL

25 sec

–     not ignited 

+      ignited

n.a.  not applicable

 

Auto-ignition test results with 150 µL

Temperature
(flask inside)

External Temperature

Ignition

Sample amount

Ignition delay time

279 °C

278 °C

150 µL

n.a.

284 °C

288 °C

150 µL

n.a.

286 °C

286 °C

150 µL

n.a.

289 °C

296 °C

+

150 µL

15 sec

293 °C

299 °C

+

150 µL

30 sec

295 °C

300 °C

+

150 µL

15 sec

299 °C

299 °C

+

150 µL

15 sec

302 °C

302 °C

+

150 µL

25 sec

–     not ignited 

+      ignited

n.a.  not applicable

 

Auto-ignition test results with 250 µL

Temperature
(flask inside)

External Temperature

Ignition

Sample amount

Ignition delay time

281 °C

289 °C

250 µL

n.a.

283 °C

287 °C

+

250 µL

20 sec

286 °C

287 °C

+

250 µL

20 sec

290 °C

295 °C

+

250 µL

15 sec

292 °C

290 °C

+

250 µL

20 sec

296 °C

296 °C

+

250 µL

20 sec

–     not ignited

+      ignited

n.a.  not applicable

 

Conclusions:
The auto-ignition temperature of the test item was determined to be 283 °C at 99.3-99.7 kPa.
Executive summary:

A study was conducted according to Regulation (EC) No 440/2008 Part A A.15 and ASTM E 659 – 15: Standard Test Method for autoignition Temperature of Chemicals to determine the auto-ignition temperature of the test substance. A volume of approximately 100 µL of the test item was dropped into the flask. The temperature of the flask was recorded for 10 minutes following insertion of the sample. After positive ignition occurred at 310 °C, the procedure was repeated using 150 µL and 250 µL samples until the minimum auto-ignition temperature was obtained. Test temperature, quantity of sample used, ignition delay time and the atmospheric pressure were recorded. The auto-ignition temperature of the test item was determined to be 283 °C at 99.3-99.7 kPa.

Description of key information

The auto-ignition temperature of the test item was determined to be 283 °C at 99.3-99.7 kPa.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
283 °C

Additional information

A study was conducted according to Regulation (EC) No 440/2008 Part A A.15 and ASTM E 659 – 15: Standard Test Method for autoignition Temperature of Chemicals to determine the auto-ignition temperature of the test substance. A volume of approximately 100 µL of the test item was dropped into the flask. The temperature of the flask was recorded for 10 minutes following insertion of the sample. After positive ignition occurred at 310 °C, the procedure was repeated using 150 µL and 250 µL samples until the minimum auto-ignition temperature was obtained. Test temperature, quantity of sample used, ignition delay time and the atmospheric pressure were recorded. The auto-ignition temperature of the test item was determined to be 283 °C at 99.3-99.7 kPa.

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