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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

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

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2015
Report date:
2015

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
Qualifier:
according to guideline
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
rel-(E)-4-((1R,5R)-2,5,6,6-tetramethylcyclohex-2-en-1-yl)but-3-en-2-one
Cas Number:
599-45-1
Molecular formula:
C14H22O
IUPAC Name:
rel-(E)-4-((1R,5R)-2,5,6,6-tetramethylcyclohex-2-en-1-yl)but-3-en-2-one
Constituent 2
Chemical structure
Reference substance name:
rel-(E)-4-((1R,5S)-2,5,6,6-tetramethylcyclohex-2-en-1-yl)but-3-en-2-one
Cas Number:
472-46-8
Molecular formula:
C14H22O
IUPAC Name:
rel-(E)-4-((1R,5S)-2,5,6,6-tetramethylcyclohex-2-en-1-yl)but-3-en-2-one
impurity 1
Reference substance name:
3-Buten-2-one, 4-(2,5,6,6-tetramethyl-1-cyclohexen-1-yl)-, (3E)-
Cas Number:
72074-84-1
Molecular formula:
C14H22O
IUPAC Name:
3-Buten-2-one, 4-(2,5,6,6-tetramethyl-1-cyclohexen-1-yl)-, (3E)-
impurity 2
Reference substance name:
3-Buten-2-one, 4-(2,2,3,6-tetramethyl-3-cyclohexen-1-yl)-, [1α(E),6α]-
Cas Number:
140632-46-8
Molecular formula:
C14H22O
IUPAC Name:
3-Buten-2-one, 4-(2,2,3,6-tetramethyl-3-cyclohexen-1-yl)-, [1α(E),6α]-
impurity 3
Reference substance name:
4-Penten-2-one, 5-(1,3,4-trimethyl-3-cyclohexen-1-yl)-, (E)-
Cas Number:
162282-94-2
Molecular formula:
C14H22O
IUPAC Name:
4-Penten-2-one, 5-(1,3,4-trimethyl-3-cyclohexen-1-yl)-, (E)-
Specific details on test material used for the study:
Commercial name : Irone Alpha
Givaudan Code No. : 6065003
Chemical nature : 4-(2,5,6,6-Tetramethyl-2-cyclohexen-1-yl)-3-buten-2-one (main component)
Empirical formula : C14H22O
Molecular weight : 206.32 g/mol
CAS No. : 79-69-6
Aspect : pale yellow to pale brown liquid
Lot No. : VE00387289
Expiration date : November 03, 2017

Results and discussion

Auto-ignition temperature (liquids / gases)
Auto-ignition temperature:
255 °C
Atm. press.:
101 325 Pa

Applicant's summary and conclusion

Conclusions:
The Auto-ignition Temperature of Irone Alpha was determined in a SUR BERLIN oven, equipped with a 250 ml glass ignition vessel according to the DIN 51794.

The lowest temperature giving a positive effect was 259°C. The injected volume was 200 µl, the ignition delay was 20 s. At a temperature of 254°C no ignition was observed.

Therefore, after rounding-off to the next-lower multiple of 5°C:

Auto-Ignition temperature of Irone Alpha: 255 ± 10°C