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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
partition coefficient
Type of information:
experimental study
Adequacy of study:
key study
Study period:
27 June 2019 2nd July 2019
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2019
Report date:
2019

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 117 (Partition Coefficient (n-octanol / water), HPLC Method)
Version / remarks:
13 April 2004
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
HPLC method
Partition coefficient type:
octanol-water

Test material

Constituent 1
Chemical structure
Reference substance name:
3-tert-butyl-1-(3,5-dicarboxyphenyl)-1H-pyrazol-5-aminium chloride
EC Number:
941-661-3
Molecular formula:
C15H18ClN3O4
IUPAC Name:
3-tert-butyl-1-(3,5-dicarboxyphenyl)-1H-pyrazol-5-aminium chloride
impurity 1
Reference substance name:
Unidentified impurity
IUPAC Name:
Unidentified impurity

Study design

Analytical method:
high-performance liquid chromatography

Results and discussion

Partition coefficient
Type:
log Pow
Partition coefficient:
ca. 1.39
Temp.:
20 °C
pH:
3

Applicant's summary and conclusion

Conclusions:
The partition coefficient (log Pow) was estimated using high performance liquid chromatography method. The estimated log Pow of the detected peak from the test item based on the chromatograms is 1.39 ± 0.002 (with 95% confidence interval) at pH 3.