Registration Dossier

Physical & Chemical properties

Partition coefficient

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Administrative data

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

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1988
Report Date:
1988

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
EU Method A.8 (Partition Coefficient)
GLP compliance:
no
Type of method:
shake-flask method to: flask method
Partition coefficient type:
octanol-water

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
name of test material (as cited in study report): 1,3,7-trimethyl-3,7-dihydro-1H-purine-2,6-dione
Analytical purity: pure

Study design

Analytical method:
other:

Results and discussion

Partition coefficient
Type:
log Pow
Partition coefficient:
-0.091
Temp.:
23 °C

Any other information on results incl. tables

Summary of results
--------------------------
/ P(OW) /
1. Weighed sample / 0.812 /
2. Weighed sample / 0.804 /
3. Weighed sample / 0.806 /

Mean / 0.807 /

The partition coefficient of caffeine in 1-Octanol/Water at 25°C, log Pow = -0.0907. No data available for pH.

Applicant's summary and conclusion