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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:
2011-04-20 to 2011-04-28
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
The study was conducted according to an appropriate test method and in compliance with known quality system (ISO 9001:2008)
Qualifier:
according to guideline
Guideline:
DIN EN 14522, Method S (Determination of the auto ignition temperature of gases and vapours)
Deviations:
no
GLP compliance:
no
Other quality assurance:
other: ISO 9001:2008
Key result
Auto-ignition temperature:
213 °C
Atm. press.:
ca. 966.7 - ca. 972.5 hPa

Table 1: preliminary test

S/N

Test temperature (°C)

Sample quantity (drops)

Atmospheric pressure (hPa)

Time-lags (Sec)

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

1

202

5

968.4

 

300

-

2

228

5

300

-

3

255

5

10

+

Lowest test temperature

255°C

 

 

Table 2: first test series                

S/N

Test temperature (°C)

Sample quantity (drops)

Atmospheric pressure (hPa)

Time-lags (Sec)

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

1

251

5

968.4

10

+

2

246

5

10

+

3

241

5

10

+

4

236

5

10

+

5

231

5

10

+

6

226

5

972.4

10

+

7

221

5

300

-

8

221

1

300

-

9

221

9

10

+

10

216

9

300

-

11

216

5

300

-

12

216

1

300

-

13

216

13

300

-

14

216

17

300

-

15

219

9

10

+

16

217

9

300

-

17

217

5

300

-

18

217

1

300

-

19

217

13

300

-

20

217

17

300

-

Lowest test temperature

219°C

 

 

Table 3: Test series 2     

S/N

Test temperature (°C)

Sample quantity (drops)

Atmospheric pressure (hPa)

Time-lags (Sec)

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

1

241

10

966.7

10

+

2

236

10

10

+

3

231

10

10

+

4

226

10

972.3

10

+

5

221

10

10

+

6

216

10

300

-

7

216

6

300

-

8

216

2

300

-

9

216

14

300

-

10

216

18

300

-

11

219

10

10

+

12

217

10

300

-

13

217

6

300

-

14

217

2

300

-

15

217

14

300

-

16

217

18

300

-

Lowest test temperature

219°C

 

Table 4: Test series 3

S/N

Test temperature (°C)

Sample quantity (drops)

Atmospheric pressure (hPa)

Time-lags (Sec)

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

1

226

10

972.5

10

+

2

221

10

10

+

3

216

10

10

+

4

211

10

300

-

5

211

6

300

-

6

211

2

300

-

7

211

14

300

-

8

211

18

300

-

9

214

10

300

-

10

214

6

300

-

11

214

2

300

-

12

214

14

300

-

13

214

18

300

-

Lowest test temperature

216°C

 

Table 5 summary of result

Parameter

Value (°C)

Lowest value of test series 1

219

Lowest value of test series 2

219

Lowest value of test series 3

216

Lowest value of all test series

216

Absolute deviation of the lowest value (1.5%)

3.2

Auto ignition temperature

213

 

Conclusions:
An auto-ignition temperature value of 213°C at 966.7 to 972.5 hPa was determined for the substance using an appropriate test method and in compliance with a known quality system (ISO 9001:2008). The result is considered to be reliable.

Description of key information

Auto-ignition temperature: 213°C at 966.7 to 972.5 hPa (DIN EN 14522)

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
213 °C

Additional information

An auto-ignition temperature value of 213°C at 966.7 to 972.5 hPa was determined for the substance using a relevant test method in accordance with DIN EN 14522 Test Method and in compliance with known quality system (ISO 9001:2008). The result is considered to be reliable and is selected as key study.

In a secondary source to which reliability could not be assigned, auto-ignition temperature value of 215°C was reported for the substance.