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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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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partition coefficient
Type of information:
calculation (if not (Q)SAR)
Migrated phrase: estimated by calculation
Adequacy of study:
key study
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: generally accepted calculation method
no guideline followed
Principles of method if other than guideline:
Calculation of the partition coefficient by means of ACD Percepta software
GLP compliance:
Type of method:
other: calculation
Partition coefficient type:
log Pow
Partition coefficient:
25 °C
>= 5 - <= 7
Remarks on result:
other: pH is based on the pH of the substance itself, as reported in the available safety data sheet. The pH is not reported in the study report

log P consensus: -0.73 = 0.43 x log P classic + 0.57 x log P Galas

The result is based on experimental results for the following most similar molecules from the built in data base:

 Compound log P (used in model)  Similarity index 
Tri-n-butylmethylammonium 0.26 0.87
Cyclopentanaminium, N, N, N, 2 -tetramethyl -1.5 0.87 
1-Propanaminium, N-methyl-N,n-dipropyl- -0.98 0.85
Ammonium, trimethyl-3 -phenylpropyl- -2.02 0.81 
Tetraethylammonium -3.15 0.81
The log P of the substance was determined to be -0.73 by using a calculation method.
Executive summary:

The log P of the substance was determined by using the software ACD percepta Release 14.0.0 (Build 2726 27 Nov 2014). A value of -0.73 at 25 °C was obtained.

Description of key information

The log P of the substance was determined to be -0.73 by using a calculation method.

Key value for chemical safety assessment

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

Additional information