Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 201-219-6 | CAS number: 79-69-6
Partition coefficient
Administrative data
- Endpoint:
- partition coefficient
- 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:
- 2 010
- Report date:
- 2010
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 117 (Partition Coefficient (n-octanol / water), HPLC Method)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.8 (Partition Coefficient - HPLC Method)
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7570 (Partition Coefficient, n-octanol / H2O, Estimation by Liquid Chromatography)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- HPLC method
- Partition coefficient type:
- octanol-water
Test material
- 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
- 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
- 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)-
- 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]-
- 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)-
Constituent 1
Constituent 2
impurity 1
impurity 2
impurity 3
- 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
Empirical formula : C14H22O
Molecular weight : 206.32 g/mol
CAS No. : 79-69-6
Aspect : colourless to pale yellow liquid
Lot No. : VE00107961
Expiration date : December 20, 2012
Study design
- Analytical method:
- high-performance liquid chromatography
Results and discussion
Partition coefficientopen allclose all
- Type:
- log Pow
- Partition coefficient:
- 3.8
- Temp.:
- 35 °C
- pH:
- 7
- Key result
- Type:
- log Pow
- Partition coefficient:
- 4
- Temp.:
- 35 °C
- pH:
- 7
- Details on results:
- The chromatograms of the test substance show two main peaks at average retention times of 7.27 minutes (52.6 % relative peak area) and 7.82 minutes (47.4 % relative peak area), corresponding to partition coefficients (log value) of 3.8 and 4.0.
Therefore:
Partition coefficients n-octanol/water of Irone alpha:
log Pow = 3.8 and 4.0;
N.B.: The determination was performed at 35 °C (temperature of the column), but the value obtained above can be considered to represent the value at an unspecified, probably ambient temperature since no mention is made in the guidelines of the temperature at which the tabulated reference substances log Pow values were determined. Partition coefficients of the test and reference substances are assumed to vary with temperature in the same way.
Applicant's summary and conclusion
- Conclusions:
- The Partition Coefficient n-octanol/water of Irone alpha was determined by the Reverse Phase High Performance Liquid Chromatographic Method according to the OECD Guidelines for Testing of Chemicals, Method No. 117.
The result is:
Partition coefficients n-octanol/water of Irone alpha: log Pow = 3.8 and 4.0
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
