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Partition coefficient

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Reference
Endpoint:
partition coefficient
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2010-01-25 -> 2010-01-31
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Qualifier:
according to guideline
Guideline:
OECD Guideline 123 (Partition Coefficient (1-Octanol / Water), Slow-Stirring Method)
Deviations:
yes
Remarks:
Some adjustments have been done. The concentration of the surfactant is below the CMC value, pH has been adjusted to 5-6
GLP compliance:
no
Type of method:
shake-flask method to: flask method
Remarks:
slow stir
Partition coefficient type:
octanol-water
Type:
log Pow
Partition coefficient:
0.7
Temp.:
25 °C
pH:
5 - 6

The measurements were made at a pH of 5-6 and at an initial concentration of 507 µg/L in the water phase (about 10% of the critical micelle

concentration (CMC) in water) and at 25°C. The partition coefficient value was determined from the weighed average of the concentrations of the main components in the product listed in the table below.

 

Substance

Log POW

Bis (2 -hydroxyethyl) coco alkylamine

0.7

with the following results of its components:

Bis (2-hydroxyethyl) octyl amine

-1.38

Bis (2-hydroxyethyl) decyl amine

 0.2

Bis (2-hydroxyethyl) dodecyl amine

 1.26

Bis (2-hydroxyethyl) tetradecyl amine

  

2.16

 Bis (2-hydroxyethyl) hexadecyl amine

 > 2.6

 Bis (2-hydroxyethyl) octadecylene amine

 >2.1

 Bis (2-hydroxyethyl) octadecyl amine

 >2.1

Conclusions:
The partition coefficient of the test substance is 0.7 (log Pow).
Executive summary:

The partition coefficient of the test substance is 0.7 (log Pow).

Description of key information

The partition coefficient of the test substance is 0.7 (log Pow).

Key value for chemical safety assessment

Log Kow (Log Pow):
0.7
at the temperature of:
25 °C

Additional information