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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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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:
data from handbook or collection of data
Principles of method if other than guideline:
Direct method
GLP compliance:
not specified
Type of method:
other: no data
Partition coefficient type:
octanol-water
Type:
log Pow
Partition coefficient:
3.28
Remarks on result:
other: no information on temperature or pH

Uncertainty due to hydrolysis of the substance (t 1/2 = 40 hours)

Conclusions:
The measured partition coefficient of diphenyl carbonate is 3.28.
Uncertainty due to hydrolysis of the substance (t 1/2 = 40 hours).
Executive summary:

The measured partition coefficient of diphenyl carbonate is 3.28.

Uncertainty due to hydrolysis of the substance (t 1/2 = 40 hours).

Endpoint:
partition coefficient
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Principles of method if other than guideline:
Microemulsion electrokinetic chromatography (MEEKC) is an capillary electrophoretic technique in which a microemulsion is used as carrier electrolyte.
GLP compliance:
not specified
Type of method:
other: Microemulsion electrokinetic chromatography
Partition coefficient type:
octanol-water
Type:
log Pow
Partition coefficient:
3.21
Temp.:
25 °C
pH:
7.4

At pH 7.4 a log Pow of 3.21 is obtained.

Uncertainity of the result due to hydrolysis (t 1/2 = 40 hours).

Conclusions:
The measured partition coefficient of diphenyl carbonate is 3.21 at 25 °C at pH 7.4.
Uncertainty due to hydrolysis of the substance (t 1/2 = 40 hours).
Executive summary:

The measured partition coefficient of diphenyl carbonate is 3.21 at 25 °C at pH 7.4.

Uncertainty due to hydrolysis of the substance (t 1/2 = 40 hours).

Description of key information

The Partition coefficient of diphenyl carbonate has been determined to be: 3.28, Direct method, Hansch (1995); 3.21 at 25.0 °C, Micro-emulsion electro-kinetic chromatography, Ostergaard et al. (2003)

Key value for chemical safety assessment

Log Kow (Log Pow):
3.21
at the temperature of:
25 °C

Additional information

This endpoint has been addressed with two key studies. Both studies were awarded a reliability score of 2 in accordance with the criteria for assessing data quality as set forth by Klimisch et al. (1997). However both data sources state that there is some uncertainty due to hydrolysis of the substance (t 1/2 = 40 hours).

 

The first value was taken from the publication titled “Exploring QSAR, Hydrophobic, Electronic, and Steric Constants” from ACS Professional Reference Book (Hansch, 1995). This data source identifies the low Pow (octanol-water) of diphenyl carbonate as 3.28 calculated using the direct method (temperature and pH were not reported).

 

The second value provided was sourced from the publication “Determination of octanol-water partition coefficients for carbonate esters and other small organic molecules by micro-emulsion electro-kinetic chromatography” (Ostergaard et al., 2003). The log Pow was identified as 3.21 at 25 °C at pH 7.4. using a capillary electrophoretic technique in which a microemulsion is used as carrier electrolyte.