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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Description of key information

The n-octanol-water partition coefficient of 1, 1- diphenylethane was determined using the HPLC method (OECD guideline 117). Based on duplicate determinations, the log Pow of  1,1 diphenylethane was determined to be  4.48 at 25°C.
In an additional study the log Pow was determined as 4.52.

Key value for chemical safety assessment

Log Kow (Log Pow):
at the temperature of:
20 °C

Additional information

The reported studies are GLP compliant and have Klimisch score 1. The n-octanol-water partition coefficient (log Kow) of 1,1 -DPE was estimated as 4.48 and 4.52. No further testing is therefore required.