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Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

auto-ignition temperature (liquids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

16-09-2013 to 18-10-2013

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

Guideline study performed under GLP. All relevant validity criteria were met.

Qualifier:

according to guideline

Guideline:

EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))

Deviations:

no

Qualifier:

according to guideline

Guideline:

DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)

Deviations:

no

GLP compliance:

yes

Specific details on test material used for the study:

- Physical state: Liquid
- Storage condition of test material: In refrigerator (2-8°C) in the dark
- Other: clear colourless liquid

Auto-ignition temperature:

270 °C

Remarks on result:

preliminary test

Auto-ignition temperature:

255 °C

Atm. press.:

>= 997.5 - <= 1 002.9 hPa

Remarks on result:

other: Definitive Test (minimum auto-ignition temperature) in triplicate

Preliminary test

The estimated auto-ignition temperature was 270°C.

 

Main study

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 < 10°C. According to the guidelines, no further testing was required. The lowest temperature at which ignition of the test substance occurred was 257°C. This temperature was rounded down to a multiple of 5°C and therefore given as the auto-ignition temperature of the test substance.

 

Table 1. Auto-ignition of the test item

Test	Volume [μl]	Auto-ignition temperature [°C]	Ignition delay [s]	Colour of the flame	Minimum auto-ignition temperature [°C]
1	70	269	35	Orange/Blue	257
	150	260	59	Orange/Blue
	250	257	62	Orange/Blue
	400	264	33	Orange/Blue
2	120	270	22	Orange/Blue	263
	200	263	43	Orange/Blue
	350	266	31	Orange/Blue
3	100	263	30	Orange/Blue	262
	220	262	41	Orange/Blue
	380	267	27	Orange/Blue

Conclusions:

The auto-ignition temperature of the test item was determined to be 255 °C at 997.5 and 1002.9 hPa.

Executive summary:

The auto-ignition temperature was determined using EU Method A.15 under GLP. The auto-ignition temperature is the lowest temperature at which the test item will ignite when mixed with air under the conditions defined in the test method. Ignition of the test item 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 < 10°C. According to the guidelines, no further testing was required. The lowest temperature at which ignition of the test item occurred was 257°C. This temperature was rounded to the lowest multiple of 5°C and therefore 255°C was given as the auto-ignition temperature of the test item. Under the conditions of the study, the auto-ignition temperature was determined to be 255 °C at 997.5 and 1002.9 hPa.

Description of key information

Auto-ignition temperature: 255 °C at ca. 1 atmosphere, EU Method A.15, 2014

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

255 °C

Additional information

Key study : EU Method A.15, 2014 : The auto-ignition temperature was determined using EU Method A.15 under GLP. The auto-ignition temperature is the lowest temperature at which the test item will ignite when mixed with air under the conditions defined in the test method. Ignition of the test item 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 < 10°C. According to the guidelines, no further testing was required. The lowest temperature at which ignition of the test item occurred was 257°C. This temperature was rounded to the lowest multiple of 5°C and therefore 255°C was given as the auto-ignition temperature of the test item. Under the conditions of the study, the auto-ignition temperature was determined to be 255 °C at 997.5 and 1002.9 hPa.