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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

Referenceopen allclose all

Endpoint:
partition coefficient
Type of information:
other: bibliography
Adequacy of study:
weight of evidence
Study period:
2012
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Justification for type of information:
as a UVCB and natural complex substance, it is considered a constituents approach. This mother tincture contains about 65% (v/v) of ethanol.
Qualifier:
no guideline available
Principles of method if other than guideline:
the principle of method is described in Sangster, J ., J. Phys. Chem. Ref. Data, 18, 1111, 1989.
Key result
Type:
log Pow
Partition coefficient:
-0.31
Temp.:
25 °C
pH:
ca. 7
Remarks on result:
other: pH is presumed because not described in HSDB monography
Details on results:
source : [Hansch, C., Leo, A., D. Hoekman. Exploring QSAR - Hydrophobic, Electronic, and Steric Constants. Washington, DC: American Chemical Society., 1995., p. 5] **PEER REVIEWED**
Conclusions:
log Kow = -0.31 for ethanol
Ethanol is an hydrophilic substance.
Endpoint:
partition coefficient
Type of information:
other: bibliography
Adequacy of study:
weight of evidence
Study period:
2000
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Qualifier:
according to guideline
Guideline:
other: EPI suite
Version / remarks:
4.11
Type:
log Pow
Partition coefficient:
-0.31
Temp.:
25 °C
pH:
7
Remarks on result:
other: pH is not available
Conclusions:
log Kow = -0.31 for ethanol according to EPI suite v4.11.

Description of key information

The Ledum palustre mother tincture is a natural complex substance. It is a mixture of several components, but two of them represent 98% (v/v) of that mixture.

One is water itself and the second one is ethanol present at 65% in the mixture.

LogP of ethanol is -0.31 at 25°C.

Key value for chemical safety assessment

Additional information