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Physical & Chemical properties

Auto flammability

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Reference
Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From June 19, 2012 to August 27, 2012
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
Qualifier:
according to guideline
Guideline:
other: Deutsches Institut für Normung (DIN), DIN Guide 51794: "Determining the Ignition Temperature of Petroleum Products", May 2003.
Qualifier:
according to guideline
Guideline:
other: International Electrotechnical Commission (IEC), IEC standard 79-4: "Electrical Apparatus for Explosive Gas Atmospheres, Part 4, Method of Test for Ignition Temperature", 1975.
GLP compliance:
yes
Relative self-ignition temperature:
370 °C

Preliminary test

The estimated auto-ignition temperature was 375°C.

 

Main study

The results of the main study on the determination of the auto-ignition temperature of the test substance are given in Table1.

 

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 371°C. This temperature was rounded down to the nearest multiple of 5°C giving an auto-ignition temperature of the test substance of 370°C.

Table1: 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

50

383

5

orange/blue

372

 

70

372

10

orange/blue

 

 

150

375

10

orange/blue

 

 

 

 

 

 

 

2

60

376

6

orange/blue

371

 

100

371

7

orange/blue

 

 

175

382

7

orange/blue

 

 

 

 

 

 

 

3

55

379

7

orange/blue

372

 

90

372

8

orange/blue

 

 

160

375

8

orange/blue

 

 

 

 

 

 

 
Conclusions:
Under the conditions of the study, the test substance was considered to be auto-ignitable with an auto-ignition temperature of 370°C at 1012.0 – 1016.3 hPa.
Executive summary:

A study was conducted to determine the self-ignition temperature of the test substance according to the EU A.15, IEC and DIN guidelines as well as GLP.

Under the conditions of the study, the test substance was considered to be auto-ignitable with an auto-ignition temperature of 370°C at 1012.0 – 1016.3 hPa.

Description of key information

The self-ignition temperature was determined according to EU Method A.15, IEC Standard 79 -4 and DIN Method 51794 (Baltussen, 2012).

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
370 °C

Additional information