Benzenesulfonic acid, 4-C10-13-sec-alkyl derivs., compds. with triethanolamine

Partition coefficient

Link to relevant study record(s)

Reference

Endpoint:

partition coefficient

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Test procedure in accordance with national standard methods (OECD) without GLP .

Qualifier:

according to guideline

Guideline:

OECD Guideline 123 (Partition Coefficient (1-Octanol / Water), Slow-Stirring Method)

Deviations:

no

GLP compliance:

no

Type of method:

other: slow-stirring method

Partition coefficient type:

octanol-water

Analytical method:

other: two-phase titration

Type:

log Pow

Partition coefficient:

1.5

Temp.:

23 °C

pH:

6 - <= 7

	determination 1	determination 2	determination 3
temperature	23 °C
stirring velocity	100 r/min
volume of flask	250 ml
amount of test substance	371 mg	110 mg	213 mg
volume of water	200 ml	100 ml	50 ml
volume of octanol	20 ml	20 ml	100 ml
duration of stirring	24 h
molecular weight of test substance	471
concentration of titrant (Hyamine)	0.004 mol/l
factor of titrant	0.979
used volume of octanol layer of totration	1 ml	1 ml	5 ml
consumption of titration of octanol layer	6.86 ml	2.26 ml	4.45 ml
amount of test substance in octanol layer	253.06 mg	83.37 mg	164.15 mg
used volume of aqueous layer for titration	10 ml	20 ml	10 ml
consumption of titration of aqueous layer	1.53 ml	1.51 ml	0.37 ml
amount of test substance in aqueous layer	56.44 mg	13.93 mg	3.41 mg
concentration in aqueous layer	0.28 g/l	0.14 g/l	0.07 g/l
total amount of test substance recovered	309.50 mg	97.29 mg	167.57 mg
recovery rate	94 %	99 %	88 %
measured concentration in octanol layer	26.86 mmol/l	8.85 mmol/l	3.49 mmol/l
measured concentration in aqueous layer	0.60 mmol/l	0.30 mmol/l	0.14 mmol/l
log Pow	1.7	1.5	1.4
log Pow (mean value)	1.5

Conclusions:

The measured log Pow of Benzenesulfonic acid, C10-13-alkyl derivs., compds. with triethanolamine was determined to be 1.5 at 23 °C and a pH of 6 - 7.

Executive summary:

The log Pow of the test substance Benzenesulfonic acid, C10-13-alkyl derivs., compds. with triethanolamine was determined according to OECD Guideline 123 (Partition Coefficient (1 -Octanol / Water), Slow-Stirring Method).

The log Pow was determined to be 1.5 at 23 °C and a pH of 6 - 7.

Description of key information

log Pow = 1.5 at 23 °C; pH 6 - 7

Key value for chemical safety assessment

Log Kow (Log Pow):

1.5

at the temperature of:

23 °C