Tripotassium/trisodium 5-(4-chloro-6-(N-(4-(4-chloro-6-(5-hydroxy-2,7-disulfonato-6-(2-sulfonatophenylazo)-4-naphthylamino)-1,3,5-triazin-2-yl-(N-methyl)amino)phenyl)amino)-1,3,5-triazin-2-ylamino)-4-hydroxy-3-(2-sulfonatophenylazo)naphthalene-2,7-disulfonate

Partition coefficient

Link to relevant study record(s)

Reference

Endpoint:

partition coefficient

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1987

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

other: EU Method A.8

Deviations:

no

GLP compliance:

not specified

Type of method:

estimation method (solubility ratio)

Partition coefficient type:

octanol-water

Specific details on test material used for the study:

- GLP sample 706

Analytical method:

other: Spectrophotometric

Key result

Type:

log Pow

Partition coefficient:

< -3.8

Temp.:

25 °C

pH:

7

Remarks on result:

other: Mean of 5 tested values

Conclusions:

Under the study condtions, the partition coefficient  (Log Kow) of the substance was determined to be <-3.8 at 25˚C.

Executive summary:

A study was conducted to determine the partition coefficient fo the substance according to EU Method A.8. Test substance concentrations were measured spectrophotometrically by comparision with a calibration curve prepared in distilled water. Under the study condtions, the partition coefficient  (Log Kow) of the substance was determined to be <-3.8 at 25˚C (Macnab, 1987).

Description of key information

The partition coefficient (n-octanol/water) was determined according to EU Method A.8 (Macnab, 1987).

Key value for chemical safety assessment

Log Kow (Log Pow):

-3.8

at the temperature of:

25 °C