Registration Dossier

Diss Factsheets

Administrative data

Endpoint:
partition coefficient
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2009
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Valid method

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2009
Report date:
2009

Materials and methods

Principles of method if other than guideline:
Determination of solubility in octanol and in water and calculation of log Pow
Type of method:
other: Calculation from solubilities
Partition coefficient type:
octanol-water

Test material

Constituent 1
Chemical structure
Reference substance name:
Reaction mass of Fatty acids, montan-wax and Montan wax
EC Number:
914-468-7
Molecular formula:
R-CH2-COOH mainly
IUPAC Name:
Reaction mass of Fatty acids, montan-wax and Montan wax
Details on test material:
- Name of test material: Licowax S Flakes
- Appearance: Yellow-beige coarse powder

Results and discussion

Partition coefficientopen allclose all
Type:
Pow
Partition coefficient:
ca. 14.1
Temp.:
20 °C
pH:
ca. 7
Type:
log Pow
Partition coefficient:
ca. 1.2
Temp.:
20 °C
pH:
ca. 7
Details on results:
Pow and log Pow were calculated from equilibrium concentrations in octanol and in water (see below).

Any other information on results incl. tables

n-Octanol solubility:

Flask No.

Equilibration time at 20 °C [h]

Content of test substance [mg/L]

1

72

247

2

72

124

mean

---

186

Water solubility:

Flask No.

Equilibration time at
20 °C [h]

Content of test
substance [mg/L]

1

2

72
72

18

8

mean

---

13

 

Log Pow range:

Log (124/18)

=

0.8

Log (247/18)

=

1.1

Log (124/ 8)

=

1.2

Log (247/ 8)

=

1.5

Mean Log Pow= 1.2

Applicant's summary and conclusion

Conclusions:
The test substance has a log Pow of 1.2
Executive summary:

The log Pow of the test substance was calculated from the equilibrium concentrations in octanol and in water. The log Pow is 1.2.