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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Partition coefficient

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Administrative data

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Endpoint:
partition coefficient
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: peer reviewed data
Principles of method if other than guideline:
Data from handbook
GLP compliance:
no
Type of method:
other: Data from handbook
Partition coefficient type:
other: Data from handbook
Key result
Type:
log Pow
Partition coefficient:
4.5
Remarks on result:
other: No information on temperature and pH available.

Data from handbook. No information on temperature and pH available.

Conclusions:
According to Lide (2005) the partition coefficient for Normal-Heptane is 4.5.
Executive summary:

According to Lide (2005) the partition coefficient for Normal-Heptane is 4.5.

Endpoint:
partition coefficient
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: peer reviewed data
Justification for type of information:
A discussion and report on the read across strategy is given as an attachment in IUCLID Section 13.
Reason / purpose for cross-reference:
read-across: supporting information
Principles of method if other than guideline:
Data from handbook
GLP compliance:
no
Type of method:
other: Data from handbook
Partition coefficient type:
other: Data from handbook
Key result
Type:
log Pow
Partition coefficient:
5.15
Remarks on result:
other: No information on temperature and pH available.

Data from handbook. No information on temperature and pH available.

Conclusions:
According to Lide (2005) the partition coefficient for octane is 5.15.
Executive summary:

According to Lide (2005) the partition coefficient for octane is 5.15.

Endpoint:
partition coefficient
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: peer reviewed data
Justification for type of information:
A discussion and report on the read across strategy is given as an attachment in IUCLID Section 13.
Reason / purpose for cross-reference:
read-across: supporting information
Principles of method if other than guideline:
Data from handbook
GLP compliance:
no
Type of method:
other: Data from handbook
Partition coefficient type:
other: Data from handbook
Key result
Type:
log Pow
Partition coefficient:
5.65
Remarks on result:
other: No information on temperature and pH available

Data from handbook. No information on temperature and pH available.

Conclusions:
According to Lide (2005) the partition coefficient for nonane is 5.65.
Executive summary:

According to Lide (2005) the partition coefficient for nonane is 5.65.

Description of key information

There is data available for this substance. Additionally, key data is available for structural analogues, Octane and Nonane and presented in the dossier. The data is read across to this substance based on analogue read across and a discussion and report on the read across strategy is provided as an attachment in IUCLID Section 13.

According to Lide (2005) the partition coefficient for Normal-Heptane is 4.5.

According to Lide (2005) the partition coefficient for octane is 5.15.

According to Lide (2005) the partition coefficient for nonane is 5.65.

Key value for chemical safety assessment

Additional information

For the purpose of PBT assessment (Annex XIII), a combination of QSAR models and experimental data for both screening and assessment level information are utilized, in accordance with REACh Annex XI and ECHA Guidance on integrated testing and evaluation strategies (R.11). As a result, single values or ranges of values reported for individual endpoints within the substance registration should be considered within this weight of evidence context and not applied individually for the purpose of PBT assessments. A complete, integrated PBT assessment for the range of relevant constituents within petroleum hydrocarbon UVCB substances is attached to this dossier (section 13.2).