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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
12 Sep 2018 - 26 Oct 2018
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))
Qualifier:
according to guideline
Guideline:
DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
GLP compliance:
yes
Specific details on test material used for the study:

Batch (Lot) Number: V046812101
Expiry date: 26 April 2019 (expiry date)
Physical Description: Clear colourless liquid
Purity/Composition: See Certificate of Analysis
Storage Conditions: At room temperature
Key result
Auto-ignition temperature:
430 °C
Atm. press.:
> 1 011 - < 1 015 hPa

The results of the main study on the determination of the auto-ignition temperature of the test item are given in Table 5.

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. According to the guidelines, no further testing was required.

The lowest temperature at which ignition of the test item occurred was 431°C. This temperature was rounded down to the nearest multiple of 5°C giving an auto-ignition temperature of the test item of 430°C.

Table 5 Auto-ignition Temperature 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

437

19

Orange/blue

432

 

150

432

20

Orange/blue

 

 

230

433

15

Orange/blue

 

2

50

446

17

Orange/blue

431

 

125

431

23

Orange/blue

 

 

220

432

19

Orange/blue

 

3

60

441

21

Orange/blue

432

 

135

432

20

Orange/blue

 

 

240

435

17

Orange/blue

 

Conclusions:
The test item is auto-ignitable with an auto-ignition temperature of 430°C.
Executive summary:

Commercially available auto-ignition temperature apparatus was used for the determination of the degree of auto-ignitability of the test substance.

The test item is auto-ignitable with an auto-ignition temperature of 430°C.

The atmospheric pressure was between 1011 and 1015 hPa.

Description of key information

The auto-ignition temperature (EC A.15) of Reaction Mass of 1-isopropyl-2,2 dimethyltrimethylene diisobutyrate and 3-benzoyloxy-2,2,4-trimethyl pentyl isobutyrate and 2,2,4-trimethylpentane-1,3-diyl dibenzoate was 430°C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
430 °C

Additional information

Commercially available auto-ignition temperature apparatus was used for the determination of the degree of auto-ignitability of the test item.

The test item is auto-ignitable with an auto-ignition temperature of 430°C.

The atmospheric pressure was between 1011 and 1015 hPa.