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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

partition coefficient
Type of information:
not specified
Adequacy of study:
key study
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Principles of method if other than guideline:
Data from peer reviewed handbook. No data provided on the method.
GLP compliance:
not specified
Type of method:
other: No data provided.
Partition coefficient type:
Key result
log Pow
Partition coefficient:
Remarks on result:
other: The provided value is a log Kow
The log Kow for theobromine was -0.78.
Executive summary:
According to the peer-reviewed handbook, the log Kow for theobromine was -0.78.

Description of key information

Key study: Data from a peer reviewed handbook. The log Pow of Theobromine is -0.78.

Key value for chemical safety assessment

Log Kow (Log Pow):

Additional information

Key study: Based on the available data from a peer-reviewed handbooks, the log Kow of theobromine is -0.78.