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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:
From May 14th, 2018 to May 23rd, 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Deviations:
no
GLP compliance:
yes (incl. certificate)
Key result
Auto-ignition temperature:
305 °C
Atm. press.:
1 atm

Table 1. Results of determination of auto-ignition temperature

Stage of determination

Auto-ignition temperature [°C]

V

[quantity of drops]

Corresponding delay time [s]

Ignition temperature position for main determination (T2)

310

5

24

The lowest value from first series of tests (T4)

308

7

22

The lowest value from main determination (T5)

309

5

22

The lowest value from first repeating (T6)

311

5

20

The lowest experimental value of ignition temperature

 

308

 

7

 

22

Auto-ignition temperature according to DIN 51794:2003-05

 

305

 

-

 

-

Table 2. Results of determination of initial temperature – T2

Temperature of oven [°C]

V [quantity of drops]

Result of test

Corresponding delay time [s]

250

 5

-

-

270

-

-

290

-

-

310

+

17

 

Table 3. Results of determination of the lowest temperature from the first series – T3

Temperature of oven [°C]

V [quantity of drops]

Result of test

Corresponding delay time [s]

305

5

-

-

305

6

-

-

305

7

-

-

305

8

-

-

305

9

-

-

305

10

-

-

310

5

+

24

(+) – yes, (-) – no T3 = 310 °C

Table 4. Results of determination of the lowest temperature from the first series – T4

Temperature of oven [°C]

 

V [quantity of drops]

 

Result of test

 

Corresponding delay time [s]

308

5

-

-

308

6

-

-

308

7

+

22

306

7

-

-

306

8

-

-

306

9

-

-

306

10

-

-

(+) – yes, (-) – no T4 = 308 °C

Table 5. Results of determination of the final temperature – T5

Temperature of oven [°C]

V [quantity of drops]

Result of test

Corresponding delay time [s]

313

5

+

17

311

5

+

20

309

5

+

22

307

5

-

-

307

6

-

-

307

7

-

-

307

8

-

-

307

9

-

-

Conclusions:
The auto ignition of the test item was 305ºC.
Executive summary:

Auto flammability of the test item was determined following EU method A15, under GLP conditions. The determination of ignition temperature was performed by injecting small quantities of the test item measured with a syringe or pipette in an open 200 ml erlenmeyer flask that was heated in a special apparatus. The contents were observed at different temperatures until ignition occurred. The lowest temperature at which ignition occurred was considered to be the auto ignition temperature. Auto ignition temperature of the test item was determined to be 305ºC.

Description of key information

Key study. Method according to EU A.15, GLP study. The auto flammability of the test item was determined to be 305ºC.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
305 °C

Additional information

Auto flammability of the test item was determined following EU method A15, under GLP conditions. The determination of ignition temperature was performed by injecting small quantities of the test item measured with a syringe or pipette in an open 200 ml Erlenmeyer flask that was heated in a special apparatus. The contents were observed at different temperatures until ignition occurred. The lowest temperature at which ignition occurred was considered to be the auto ignition temperature. Auto ignition temperature of the test item was determined to be 305ºC.