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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From 16 Oct 2015 to 10 Dec 2015
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
GLP compliance:
yes (incl. QA statement)
Remarks:
28/07/2015
Key result
Auto-ignition temperature:
400 °C
Atm. press.:
987 hPa
Remarks on result:
other: ± 3°C

Preliminary test

 

Volume of test item injected in the oven: 70 µL

 

 

Temperature
of the assay
(°C)

Auto-ignition

Maximal temperature of the air recorded in the center of the test flask after auto-ignition(°C)

Atmospheric pressure
(kPa)

Relative humidity
(%)

Assay No.

Observed

Corrected

Y / N

Lag(s)

Observed

Corrected

1

100

100

No

/

/

/

98.6

38

2

153

153

No

/

/

/

98.6

38

3

208

208

No

/

/

/

98.8

38

4

249

249

No

/

/

/

98.8

38

5

301

301

No

/

/

/

98.8

39

6

350

349

No

/

/

/

98.7

40

7

399

398

No

/

/

/

98.7

42

8

448

447

Yes

3

456

455

98.7

40

9

431

430

No

/

/

/

99.1

41

10

434

433

No

/

/

/

99.0

42

11

439

438

No

/

/

/

99.0

41

 

The auto-ignition temperature was situated between 438°C and 447°C (corrected values).

 

Main test

 

Volume of test item injected in the oven: 70 µL

 

Only the auto-ignition runs for each assay are summarised in the following table:

 

 

Auto-ignition temperature (°C)

Auto-ignition

Maximal temperature of the air recorded in the center of the test flask after ignition (°C)

Atmospheric pressure
(kPa)

Relative humidity
(%)

Assay No.

Observed

Corrected

Lag(s)

Observed

Corrected

1

443

442

4

449

448

98.9

39

2

441

440

5

448

447

99.1

42

3

441

440

5

446

445

99.0

41

4

442

441

5

447

446

98.3

43

5

441

440

9

445

444

98.2

43

 

Conclusions:
The auto-ignition temperature of trifluoromethanesulphonic anhydride is 440 ± 3°C.
Executive summary:

In a study (2015), the auto-ignition temperature of trifluoromethanesulphonic anhydride was determined according to the EC A15 method under GLP conditions.

The test was repeated at different temperatures (from about 100°C to about 600°C) with suitable sampling volumes until the minimum value of the ignition temperature was observed.

The auto-ignition temperature of trifluoromethanesulphonic anhydride was 440 ± 3°C.

Description of key information

One reliable key study scored as reliability 1 is available for this endpoint. The auto-ignition temperature of trifluoromethanesulphonic anhydride was determined according to the EC A15 method under GLP conditions. The auto-ignition temperature of trifluoromethanesulphonic acid was 440 ± 3°C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
440 °C

Additional information