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Partition coefficient

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Reference
Endpoint:
partition coefficient
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Qualifier:
according to
Guideline:
other: as mentioned below
Principles of method if other than guideline:
Determination of octanol water partition coefficient of the test chemical.
GLP compliance:
not specified
Type of method:
other: No data available
Partition coefficient type:
octanol-water
Key result
Type:
log Pow
Partition coefficient:
1.83
Remarks on result:
other: other details not available
Details on results:
The logKow of test chemical was determined to be 1.83.
Conclusions:
The partition coefficient (log Pow) value of the test chemical was determined to be 1.83.
Executive summary:

The partition coefficient (log Pow) value of the test chemical was determined to be 1.83. Based on this value, test chemical can be considered to be hydrophilic in nature.

Description of key information

Based on the available data from study report,the partition Coefficient n-octanol/water of test chemical was determined by the Reverse Phase High Performance Liquid Chromatographic method according to OECD Guideline No. 117 for testing of Chemicals. A test item solution was prepared by accurately weighing 4 mg of test item and diluted with Acetonitrile up to 10 ml. Thus, the test solution concentration was 400 mg/l. The pH of test substance was 4.9. The reference substances were chosen according to Functional similarity with the test substance and calibration graph was prepared. The reference substances were 4-Acetylpyridine, Benzene, Biphenyl, Nitrobenzene, Toluene, Ethylbenzene, Naphthalene, Dodecanoic acid, having Pow value ranging from 0.5 to 4.2. The Log Pow value of the test chemical was determined to be 1.100 ± 0.028 dimensionless at 25°C. On the basis of this value, test chemical can be considered to be hydrophilic in nature.

 

Key value for chemical safety assessment

Log Kow (Log Pow):
1.1
at the temperature of:
25 °C

Additional information

Based on the available data in a key study from study report, the partition Coefficient n-octanol/water of test chemical was determined by the Reverse Phase High Performance Liquid Chromatographic method according to OECD Guideline No. 117 for testing of Chemicals. A test item solution was prepared by accurately weighing 4 mg of test item and diluted with Acetonitrile up to 10 ml. Thus, the test solution concentration was 400 mg/l. The pH of test substance was 4.9. The reference substances were chosen according to Functional similarity with the test substance and calibration graph was prepared . The reference substances were 4-Acetylpyridine, Benzene, Biphenyl, Nitrobenzene, Toluene, Ethylbenzene, Naphthalene, Dodecanoic acid, having Pow value ranging from 0.5 to 4.2. The Log Pow value of the test chemical was determined to be 1.100 ± 0.028 dimensionless at 25°C.

Additional studyfromhandbook, authoritative database, secondary source and modelling databasesindicates that the octanol waterpartition coefficient (log Pow) value of the test chemical was estimated to be 1.83.

Thus, based on the available information, the logPow valueof the test chemical ranges from 1.1 to 1.83, respectively. On the basis of this value, test chemical can be considered to behydrophilic in nature.