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Partition coefficient

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Reference
Endpoint:
partition coefficient
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Qualifier:
no guideline followed
Principles of method if other than guideline:
The preliminary partition coefficient (log Pow) was estimated by using a preliminary screening test as described below.
GLP compliance:
yes
Type of method:
estimation method (solubility ratio)
Partition coefficient type:
octanol-water
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: BCBQ4646V
- Expiration date of the lot/batch: 31.07.2017 (re-test date)
- Purity test date: na

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: room temperature

TREATMENT OF TEST MATERIAL PRIOR TO TESTING
- Treatment of test material prior to testing: no
Analytical method:
high-performance liquid chromatography
Key result
Type:
log Pow
Partition coefficient:
-2.94
Temp.:
20 °C
pH:
>= 0 - <= 14
Remarks on result:
other:
Remarks:
pH value was not determined as it was a preliminary screening
Details on results:
The estimated Partition Coefficient was calculated as the ratio of the concentrations of the test substance in water and in n-octanol (without pH correction).

The Partition Coefficient was calculated using the formula: POW= c (n-octanol) / c (water).

Measurement

POW

log POW

1

0.00097

-3.01

2

0.00136

-2.87

The mean value of the log POWwas determined as -2.94.

Executive summary:

The Partition Coefficient was calculated using the formula: POW= c (n-octanol) / c (water).

Measurement

POW

log POW

1

0.00097

-3.01

2

0.00136

-2.87

The mean value of the log POWwas determined as -2.94.

Description of key information

The octanol-water partition coefficient of the registered substance was determined in an experimental study under GLP conditions.

In a preliminary test determining the solubility in the individual solvents, the log Pow was determined as -2.94.

As this value was outside of the applicability domain of the potential tests, no further test were performed.

Key value for chemical safety assessment

Log Kow (Log Pow):
-2.94
at the temperature of:
20 °C

Additional information