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Administrative data

Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Feb 2021
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2021
Report date:
2021

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Version / remarks:
31 May 2008 (referring to DIN 51794 “Bestimmung der Zündtemperatur“, dated May 2003)
Deviations:
yes
Remarks:
Only uncritical deviations: apparatus refers to DIN 14522, use smaller temperature steps, count of seconds instead than drops
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
1,6-anhydro-β-D-glucose
EC Number:
207-855-0
EC Name:
1,6-anhydro-β-D-glucose
Cas Number:
498-07-7
Molecular formula:
C6H10O5
IUPAC Name:
(1R,2S,3S,4R,5R)-6,8-dioxabicyclo[3.2.1]octane-2,3,4-triol
Constituent 2
Chemical structure
Reference substance name:
Glycollaldehyde
EC Number:
205-484-9
EC Name:
Glycollaldehyde
Cas Number:
141-46-8
Molecular formula:
C2H4O2
IUPAC Name:
2-hydroxyacetaldehyde
Constituent 3
Reference substance name:
Organic acids
IUPAC Name:
Organic acids
Constituent 4
Reference substance name:
Ketones
IUPAC Name:
Ketones
Constituent 5
Reference substance name:
Phenols
IUPAC Name:
Phenols
Constituent 6
Reference substance name:
Water
EC Number:
231-791-2
EC Name:
Water
Cas Number:
7732-18-5
Molecular formula:
H2O
IUPAC Name:
water
Constituent 7
Reference substance name:
Oligomers of sugars and anhydrosugars
IUPAC Name:
Oligomers of sugars and anhydrosugars
Test material form:
liquid: viscous

Results and discussion

Auto-ignition temperature (liquids / gases)
Key result
Auto-ignition temperature:
415 °C
Atm. press.:
980.7 mBar

Any other information on results incl. tables

First test series

selected temp (°C) seconds used ignition? observations
426
5 yes flame and plopp
421 5 no Smoke
421 7 yes flame and plopp
419 7 no smoke
 419 5 no  smoke
 419 3 no smoke
 419 9 no  smoke

The lowest value is 421.09°C.

Second test series

selected temp (°C) seconds used ignition? observations
441.1
5 yes flame and plopp
436.1 5 yes flame and plopp
431.1 5 yes flame and plopp
426.1 5 yes flame and plopp
421.1 5 yes flame and plopp
416.1 5 yes flame and plopp
411.1 5 no smoke
411.1 7 no smoke
411.1 9 no smoke
411.1 3 no smoke
414.5 5 yes flame and plopp
412.5 5 no smoke
412.5 7 no smoke
412.5 9 no smoke
 412.5  3  no  smoke

The lowest value is 414.63°C.

Third test series

selected temp (°C) seconds used ignition? observations
434.6
5 yes flame and plopp
426.6 5 yes flame and plopp
424.6 5 yes flame and plopp
419.6 5 no smoke
419.6 7 yes flame and plopp
417.6 7 no smoke
 417.6 5 no smoke
 417.6 9 no smoke
 417.6 3 no smoke

The lowest value is 420.28°C.

The lowest main test values are summarized below:

experiment value (rounded to integer) ignition delay seconds used
1 421 °C 27s 7
2 415 °C 25s 5
3 420 °C 29s 7

Applicant's summary and conclusion

Conclusions:
Auto-ignition temperature: 415°C.
Executive summary:

The auto ignition temperature was determined in three independent determinations. A lowest value of the main test of 415°C was found.

Therefore, the auto-ignition temperature according to EU A.15 (rounded down to a whole multiple of 5 °C) of the test item is stated as 415 °C.

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