Registration Dossier

Physical & Chemical properties

Partition coefficient

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

 The log Pow value for fluorescein sodium at pH = 7.0 was determined to be 0.34.

Key value for chemical safety assessment

Log Kow (Log Pow):
0.34

Additional information

YASUHIRO OBA and SIMON R. POULSON(2012) measured the values of logKow vs. pH for fluorescein and eosin Y, two of the most commonly used fluorescent dye tracers.

Fluorescein (sodium salt, CAS: 518-47-8) was obtained from Sigma-Aldrich. The value of the octanol-water partition coefficient (Kow) was determined by the shake-flask method. The log Pow value for fluorescein sodium at pH = 7.0 was determined to be 0.34.