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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:
2017-11-09 to 2017-11-15
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Qualifier:
according to
Guideline:
DIN EN 14522, Method S (Determination of the auto ignition temperature of gases and vapours)
GLP compliance:
no
Other quality assurance:
other: ISO 9001:2008
Key result
Auto-ignition temperature:
314 °C
Atm. press.:
ca. 957.3 - ca. 975.1 hPa

Results

 Preliminary Test

No.

Test temperature [°C]

Number of sample [drops]

Result concerning ignition [negative(-) / positive(+)]

Atmospheric pressure [hPa]

1

311.1

5

-

969.6

2

342.8

5

-

 

3

345.5

5

+

 

Lowest temperature

345.5°C

 

Test Series 1

No.

Test temperature [°C]

Number of sample [drops]

Result concerning ignition [negative(-) / positive(+)]

Atmospheric pressure [hPa]

1

341.0

17

+

966.4

2

336.0

17

+

 

3

331.0

17

+

 

4

326.0

17

+

 

5

321.0

17

-

 

6

321.0

12

+

 

7

316.0

17

-

 

8

316.0

12

-

 

9

316.0

7

-

 

10

319.0

17

-

 

11

319.0

12

-

 

12

319.0

7

+

 

13

317.0

17

-

 

14

317.0

12

-

968.9

15

317.0

7

-

 

Lowest temperature

319°C

 

Test Series 2

No.

Test temperature [°C]

Number of sample [drops]

Result concerning ignition [negative(-) / positive(+)]

Atmospheric pressure [hPa]

1

346.0

17

+

 

2

341.0

17

+

 

3

336.0

17

-

 

4

336.0

12

+

 

5

331.0

17

-

 

6

331.0

12

+

 

7

326.0

17

+

957.3

8

321.0

17

-

 

9

321.0

12

+

 

10

316.0

17

-

 

11

316.0

12

-

 

12

316.0

7

-

 

13

319.0

17

-

971.5

14

319.0

12

-

 

15

319.0

7

-

 

Lowest temperature

321°C

 

Test Series 3

No.

Test temperature [°C]

Number of sample [drops]

Result concerning ignition [negative(-) / positive(+)]

Atmospheric pressure [hPa]

1

326.0

17

+

 

2

321.0

17

+

 

3

316.0

17

-

 

4

316.0

12

-

 

5

316.0

7

-

 

6

319.0

17

-

 

7

319.0

12

+

 

8

317.0

17

-

 

9

317.0

12

-

975.1

10

317.0

7

-

 

Lowest temperature

319°C

 

Summary

Parameter

Value [°C]

Lowest value of test series 1:

319

Lowest value of test series 2:

321

Lowest value of test series 3

319

Lowest value of all test series:

319

Absolute deviation of the lowest value (1.5%):

4.8

Auto-ignition temperature

314

 

Remarks

According to DIN EN 14522 the lowest value of all test series (319°C) was reduced by the deviation value based on the precision of the method (rel. 1.5% = 4.8°C). The resulting value was rounded to the next integral number (314°C).

 

Conclusions:
An auto-ignition temperature of 314°C at 957.3 to 975.1 hPa was determined for the substance using a relevant test method. The result is considered to be reliable.

Description of key information

Auto-ignition temperature: 314°C at 957.3 to 975.1 hPa (DIN 14522, Method S)

Key value for chemical safety assessment

Additional information

An auto-ignition temperature value of 314°C at 957.3 to 975.1 hPa was determined for the substance using a relevant test method and in compliance with a known quality system (ISO 9001:2008). The result is considered to be reliable.

In available secondary source to which reliability could not be assigned, an auto-ignition temperature value of 295°C at 1013 hPa was reported for the substance.