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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2015
Report date:
2015

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
Deviations:
no
GLP compliance:
no
Type of method:
flask method
Partition coefficient type:
octanol-water

Test material

Constituent 1
Reference substance name:
pentasodium 4-({4-[(4-aminophenyl)({4-[(4-sulfonatophenyl)amino]cyclohexa-2,5-dien-1-ylidene})methyl]phenyl}amino)benzene-1-sulfonate 4-{[4-({4-[(4-sulfonatophenyl)amino]cyclohexa-2,5-dien-1-ylidene}({4-[(4-sulfonatophenyl)amino]phenyl})methyl)phenyl]amino}benzene-1-sulfonate
EC Number:
944-086-6
IUPAC Name:
pentasodium 4-({4-[(4-aminophenyl)({4-[(4-sulfonatophenyl)amino]cyclohexa-2,5-dien-1-ylidene})methyl]phenyl}amino)benzene-1-sulfonate 4-{[4-({4-[(4-sulfonatophenyl)amino]cyclohexa-2,5-dien-1-ylidene}({4-[(4-sulfonatophenyl)amino]phenyl})methyl)phenyl]amino}benzene-1-sulfonate
Test material form:
solid
Details on test material:
UVCB

Study design

Analytical method:
high-performance liquid chromatography

Results and discussion

Partition coefficient
Type:
log Pow
Partition coefficient:
-4.9
Temp.:
23 °C
pH:
ca. 6.3

Any other information on results incl. tables

  Result in detail:
 determ.no.  stock solution [ml]  n-octanol [ml]  substance conc. in n-octanol phase [mg/l]  substance conc. in water phase [mg/l]  log Pow
A1  5  10  <0.0043  341.6  < -4.9
A2  5  10  <0.0043  365.2  < -4.9
B1  10  10  <0.0043  364.4  < -4.9
B2  10  10  <0.0043  402.5  < -4.9
C1  20  10  <0.0043  409.4  <- 4.9
C2   20  10  <0.0043  359.8  < - 4.9
 mean  ---  ---  ---  ---  < -4.9

Applicant's summary and conclusion

Conclusions:
The test substance has a log Pow of -4.9 at 23°C
Executive summary:

The log Pow of the test substance at 23. °C is -4.9.