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Partition coefficient

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Reference
Endpoint:
partition coefficient
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
OECD 107
Qualifier:
according to
Guideline:
OECD Guideline 107 (Partition Coefficient (n-octanol / water), Shake Flask Method)
Type of method:
shake-flask method to: flask method
Partition coefficient type:
octanol-water
Analytical method:
photometric method
Key result
Type:
log Pow
Partition coefficient:
-2.5
Temp.:
23 °C
pH:
ca. 3.4
Remarks on result:
other: mean of 6 measurements; the value refers to constituent trisodium trioxalatoferrate

Table 1: Results

no.

stock solution [mL]

n-octanol [mL]

conc. in n-octanol phase [mg/L]

conc. in water phase [mg/L]

log pow

A1

5

10

0.9

358.1

- 2.6

A2

5

10

0.9

358.8

- 2.6

B1

10

10

0.9

369.8

- 2.6

B2

10

10

1.1

363.3

- 2.5

C1

20

10

1.5

359.7

- 2.4

C2

20

10

1.4

355.5

- 2.4

mean

-

-

-

-

- 2.5

Stock solution: 725 mg/L reaction mass (= 410 mg/L trisodium trioxalatoferrate); the concentration of the constituent trisodium trioxalatoferrate was determined

Recovery rate: the recovery rate was between 87 and 90 %.

Description of key information

Key value for chemical safety assessment

Log Kow (Log Pow):
-2.5
at the temperature of:
23 °C

Additional information

the value refers to the main constituent trisodium trioxalatoferrate