Reaction mass of sodium sulphate and trisodium trioxalatoferrate

Partition coefficient

Link to relevant study record(s)

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

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 %.

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