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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP. Guideline study

Data source

Reference
Reference Type:
other: Body responsible for the test
Title:
Unnamed
Year:
2011
Report date:
2011

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 117 (Partition Coefficient (n-octanol / water), HPLC Method)
GLP compliance:
yes (incl. QA statement)
Type of method:
HPLC method
Remarks:
HPLC method at pH 2 and neutral pH
Partition coefficient type:
octanol-water

Test material

Constituent 1
Chemical structure
Reference substance name:
Ethyl [(4-methylphenyl)sulphonyl]carbamate
EC Number:
226-952-9
EC Name:
Ethyl [(4-methylphenyl)sulphonyl]carbamate
Cas Number:
5577-13-9
Molecular formula:
C10H13NO4S
IUPAC Name:
ethyl [(4-methylphenyl)sulfonyl]carbamate

Results and discussion

Partition coefficientopen allclose all
Type:
log Pow
Partition coefficient:
0.73
Temp.:
23 °C
pH:
7
Remarks on result:
other: pH neutral
Type:
Pow
Partition coefficient:
5.3
Temp.:
23 °C
pH:
7
Remarks on result:
other: pH neutral
Type:
log Pow
Partition coefficient:
1.7
Temp.:
23 °C
pH:
2
Type:
Pow
Partition coefficient:
55
Temp.:
23 °C
pH:
2

Applicant's summary and conclusion

Conclusions:
The HPLC method at neutral pH and at pH 2 was applied for the determination of the partition coefficient (Pow) of Tolfamato.
The Pow and log Pow value of the test substance at neutral pH and at pH 2 was:
Pow (neutral pH): 5.3 ; log Pow (neutral pH): 0.73
Pow (pH 2): 55 ; log Pow (pH 2): 1.7