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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:
1985
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Reason / purpose for cross-reference:
reference to same study
Qualifier:
no guideline followed
Principles of method if other than guideline:
The methode is similar to the OECD 107 guideline
GLP compliance:
no
Type of method:
flask method
Partition coefficient type:
octanol-water
Analytical method:
high-performance liquid chromatography
Type:
log Pow
Partition coefficient:
2
pH:
6.5
Remarks on result:
other: N=8
Type:
log Pow
Partition coefficient:
1.51
pH:
12
Remarks on result:
other: N=4
Conclusions:
According to Govers H et al., log Kow of DPTU (1,3-diphenyl-2-thiourea) is about 2 at pH 6.5 and 1.51 at pH 12.
Executive summary:

The partition coefficient of 1,3-diphenyl-2-thiourea was evaluated in a study performed according to the principles of the shake-flask method.The partition coefficient was 2 at pH = 6.5 and 1.51 at pH = 12.

Description of key information

The partition coefficient was evaluated in a study performed according to the principles of the shake-flask method.


This result is consolidated by QSAR estimations performed with OPERA (v 1.5).

Key value for chemical safety assessment

Log Kow (Log Pow):
3.6

Additional information

The partition coefficient of 1,3-diphenyl-2-thiourea was evaluated in a study performed according to the principles of the shake-flask method.The partition coefficient was 2 at pH = 6.5 and 1.51 at pH = 12.


The partition coefficient of 1,3-diphenyl-2-thiourea was also estimated by QSAR (OPERA v1.5).The highest partition coefficient estimated is 3.6. This value is used in the risk assessment of the substance.