2-methylpentyl 2-hydroxybenzoate

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:

18-03-2020 to 13-05-2020

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

Auto-ignition temperature:

390 °C

Atm. press.:

1 019 hPa

Remarks on result:

preliminary test

Key result

Auto-ignition temperature:

370 °C

Atm. press.:

>= 1 012 - <= 1 019 hPa

Remarks on result:

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

Preliminary test

The estimated auto-ignition temperature was 390°C.

 

Main study

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 < 20°C, with an auto-ignition temperature > 300°C. Therefore, according to the guidelines, no further testing was required. The lowest temperature at which ignition of the test substance occurred was 374°C. This temperature was rounded down to the nearest multiple of 5°C giving an auto-ignition temperature of the test item of 370°C.

 

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	387	5	Orange	383
	150	383	4	Orange
	300	384	2	Orange
2	50	392	5	Orange	385
	100	385	9	Orange
	250	387	5	Orange
3	80	383	4	Orange	374
	175	382	3	Orange
	275	374	3	Orange
	350	383	3	Orange

Conclusions:

The auto-ignition temperature of the test item was determined to be 370 °C at 1012 and 1019 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 < 20°C, with an auto-ignition temperature > 300°C. Therefore, according to the guidelines, no further testing was required. The lowest temperature at which ignition of the test substance occurred was 374°C. This temperature was rounded down to the nearest multiple of 5°C and therefore 370°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 370°C at 1012 and 1019 hPa.

Description of key information

Auto-ignition temperature: 370 °C at ca. 1 atmosphere, EU Method A.15, 2020

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

370 °C

Additional information

Key study : EU Method A.15, 2020 : 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 < 20°C, with an auto-ignition temperature > 300°C. Therefore, according to the guidelines, no further testing was required. The lowest temperature at which ignition of the test substance occurred was 374°C. This temperature was rounded down to the nearest multiple of 5°C and therefore 370°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 370°C at 1012 and 1019 hPa.