Registration Dossier

Physical & Chemical properties

Auto flammability

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
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:
DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
Deviations:
no
Qualifier:
according to guideline
Guideline:
DIN EN 14522, Method P (Determination of the auto ignition temperature of gases and vapours)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Key result
Auto-ignition temperature:
290 °C
Atm. press.:
970.2 - 990.4 hPa

Preliminary Test

An approximate value of the ignition temperature of the test item was first determined by a preliminary test. Table 1gives the result of the preliminary test. An ignition is denoted as “+” and no ignition is denoted as “-“. 5 drops were put into the Erlenmeyer flask at each temperature.

Table 1:   Results of the preliminary test

Preliminary Test

Temperature / °C

Ignition / +/-

203

-

251

-

305

-

356

+

345

+

334

+

325

+

314

+

307

-

Atmospheric pressure:

996.0 - 1009.7 hPa

In the preliminary test, the lowest temperature at which an ignition occurred was 314 °C.

Main Test

The lowest temperatures at which an ignition occurred in the main test are given in Table 2.

Table2:    Lowest temperatures at which an ignition occurred

Main test series

Lowest temperatures of an ignition

Highest temperatures without an ignition

Atmospheric Pressure

1

297 °C

294 °C

991.5 – 105.5 hPa

2

294 °C

290 °C

970.2 – 990.4 hPa

3

295 °C

291 °C

993.0 hPa

Based on results of the main test series, the lowest auto-ignition temperature was 294 °C.

Regulation EC No. 440/2008 and DIN 51794: The auto-ignition temperature rounded down to the nearest multiple of 5 °C was determined as 290 °C.

For information: DIN EN 14522: The auto-ignition temperature reduced by 1.5 % and rounded to the nearest integer temperature was determined as 289 °C.

Conclusions:
auto-ignition temperature: 290 °C
Executive summary:

The test item Tributyl borate has an auto-ignition temperature of 290 °C according to Regulation EC No. 440/2008 Method A.15. Auto-Ignition Temperature (Liquids and Gases) and DIN 51794 (2003): Determination of Ignition Temperature.

Description of key information

auto-ignition temperature of Tributyl borate: 290 °C at 970.2 - 990.4 hPa [according to EU Method A.15 and DIN 51794 (2003)]

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
290 °C

Additional information

According to DIN EN 13463-1 the substance Tributyl borate has to be assigned to temperature class T3.