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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2015-11-27 to 2015-12-04
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Remarks:
The study is conducted in accordance with relevant test method but in compliance with ISO 9001:2008
Qualifier:
according to guideline
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Deviations:
no
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:
228 °C
Atm. press.:
969 - 979 hPa

Preliminary result

No.

Test temperature

[°C]

Number of

sample [drops]

Result concerning

ignition

[negative(-) / positive(+)]

Atmospheric pressure [hPa]

1

212.5

5

-

967

2

239.4

5

-

3

262.0

5

-

4

283.5

5

-

5

307.8

5

-

6

317.8

5

+

Lowest temperature

317.8°C

 

 

Test series 1

No.

Test temperature

[°C]

Number of

sample [drops]

Result concerning

ignition

[negative(-) / positive(+)]

Atmospheric pressure [hPa]

1

313.0

5

+

969

2

308.0

5

+

3

303.0

12

+

4

298.0

12

+

5

293.0

12

+

6

288.0

12

+

7

283.0

12

+

8

278.0

12

+

9

273.0

12

+

10

268.0

12

+

11

263.0

12

+

12

258.0

12

+

13

253.0

12

+

14

248.0

12

+

15

243.0

12

+

16

238.0

12

+

17

233.0

12

+

18

228.0

12

-

19

228.0

7

-

20

228.0

17

-

21

231.0

12

-

22

231.0

7

-

23

231.0

17

-

Lowest temperature

233°C

 

 

Test series 2

No.

Test temperature

[°C]

Number of

sample [drops]

Result concerning

ignition

[negative(-) / positive(+)]

Atmospheric pressure [hPa]

1

238.0

12

+

977

2

233.0

12

+

3

228.0

12

-

4

228.0

7

-

5

228.0

17

-

6

231.0

12

-

7

231.0

7

-

8

231.0

17

-

Lowest temperature

233°C

 

 

Test series 3

No.

Test temperature

[°C]

Number of

sample [drops]

Result concerning

ignition

[negative(-) / positive(+)]

Atmospheric pressure [hPa]

1

243.0

12

+

979

2

238.0

12

+

3

233.0

12

+

4

228.0

12

-

5

228.0

7

-

6

228.0

17

-

7

231.0

12

+

8

229.0

12

-

9

229.0

7

-

10

229.0

17

-

Lowest temperature

231°C

 

Summary of results

Parameter

Value

Lowest value of test series 1:

233°C

Lowest value of test series 2:

233°C

Lowest value of test series 3:

231°C

Lowest value of all test series:

231°C

Absolute deviation of the lowest value (1.5%):

3.5°C

Auto-ignition temperature:

228°C

 

According to DIN EN 14522 the lowest value of all test series (231°C) was reduced by the deviation value based on the precision of the method (rel. 1.5% = 3.5°C). The resulting value was rounded to the next integral number (228°C).

Conclusions:
An auto-ignition temperature value of 228°C at 969-979 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.

Description of key information

Auto-ignition temperature: 228°C at 969 -979 hPa (DIN EN 14522)

Key value for chemical safety assessment

Additional information

An auto-ignition temperature value of 228°C at 969 -979 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.