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Auto flammability

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Reference
Endpoint:
auto-flammability
Type of information:
experimental study
Adequacy of study:
key study
Study period:
29 June, 2009 - 6 August, 2009
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: The study has been performed according to OECD and/or EC guidelines, and according to GLP principles.
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Deviations:
no
Qualifier:
according to
Guideline:
other: DIN Guide 51794 (Determining the Ignition Temperature of Petroleum Products)
Deviations:
no
Qualifier:
according to
Guideline:
other: IEC standard 79-4 (Electrical Apparatus for Explosive Gas Atmospheres, Part 4, Method of Test for Ignition Temperature)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Auto-ignition temperature:
320 °C
Atm. press.:
>= 1 012.5 - <= 1 022.4 hPa
Remarks on result:
other:

Preliminary test

The estimated auto-ignition temperature was 355°C.

 

Main study

The results of the main study on the determination of the auto-ignition temperature of the test substnace are given in table 12.

Table 12: main study - auto-ignition temperature of the test substance

Test

Volume (µl)

 

Auto-ignition temperature (°C)

Ignition delay (s)

Colour of the flame

Minimum auto-ignition temperature (°C)

1

70

343

3

Orange

335

200

335

3

Orange

400

348

5

Orange

 

 

 

 

 

 

2

50

337

4

Orange

324

75

324

4

Orange

250

335

4

Orange

 

 

 

 

 

332

3

65

349

3

Orange

100

332

4

Orange

300

348

5

Orange

 

Ignition of the test substance within 5 minutes after introduction was observed with each sample volume and with each test a minimum auto-ignition temperature was obtained. The maximum deviation between the three values was < 20°C. According to the guidelines, no further testing was required.

 

The lowest temperature at which ignition of the test substance occurred was 324°C. This temperature was rounded off to the nearest multiple of 5°C giving an auto-ignition temperature of the test substance of 320°C.

Conclusions:
A commercially available auto-ignition temperatures apparatus was used for the determination of the degree of auto-ignitability of 2-sec-butylphenol. The test substance is auto-ignitable with an auto-ignition temperature of 320°C at 1012.5 – 1022.4 hPa.
Executive summary:

The auto-ignition degree of 2 -sec-butylphenol was determined using a commerciable available auto-ignition temperatures apparatous (Chilwoth Technology, Southampton, UK). The method employed followed EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases)), DIN Guide 51794 (Determining the Ignition Temperature of Petroleum Products) and IEC standard 79-4 (Electrical Apparatus for Explosive Gas Atmospheres, Part 4, Method of Test for Ignition Temperature). The estimated auto-ignition temperature in the preliminary test was 355°C. In the main study, three tests were performed. Ignition of the test substance within 5 minutes after introduction was observed with each sample volume, and with each test a minimum auto-ignition temperature was obtained. The maximum deviation between the three values was < 20°C. According to the guidelines, no further testing was required. The lowest temperature at which ignition of the test substance occurred was 324°C. This temperature was rounded off to the nearest multiple of 5°C giving an auto-ignition temperature of the test substance of 320°C.

The test substance resulted auto-ignitable with an auto-ignition temperature of 320°C at 1012.5 – 1022.4 hPa.

Description of key information

Auto-ignition temperature: 320°C at 1012.5 – 1022.4 hPa

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
320 °C

Additional information

The auto-ignition degree of 2 -sec-butylphenol was determined using a commerciable available auto-ignition temperatures apparatous (Chilwoth Technology, Southampton, UK). The method employed followed EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases)), DIN Guide 51794 (Determining the Ignition Temperature of Petroleum Products) and IEC standard 79-4 (Electrical Apparatus for Explosive Gas Atmospheres, Part 4, Method of Test for Ignition Temperature). The estimated auto-ignition temperature in the preliminary test was 355°C. In the main study, three tests were performed.Ignition of the test substance within 5 minutes after introduction was observed with each sample volume, and with each test a minimum auto-ignition temperature was obtained. The maximum deviation between the three values was < 20°C. According to the guidelines, no further testing was required.The lowest temperature at which ignition of the test substance occurred was 324°C. This temperature was rounded off to the nearest multiple of 5°C giving an auto-ignition temperature of the test substance of 320°C.

The test substance resulted auto-ignitable with an auto-ignition temperature of 320°C at 1012.5 – 1022.4 hPa.