2-ethylhexyl benzoate

Water solubility

Link to relevant study record(s)

Reference

Endpoint:

water solubility

Type of information:

experimental study

Adequacy of study:

key study

Study period:

08 May-04 June 2012

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.6 (Water Solubility)

GLP compliance:

no

Type of method:

column elution method

Water solubility:

0.4 mg/L

Temp.:

20 °C

pH:

6.8 - 7.6

Instrument settings:

Instrument settings
Injection mode	Split
Column	DB-5MSUI, 0.25 mm inner diameter, 0.25 µm film, 15 m length
Eluent A	Water/Methanol (1/1 V/V) + 0.1% Formic acid
Eluent B	Methanol/THF (8/2 V/V) + 0.1% Formic acid
Temperature	50 °C for one 1 min, then at 12 °C/min to 300 °C for 5 minutes
Carrier gas	Helium
Retention times	Methyl pentadecanoate (internal standard) 13.3 min Test substance 12.2 min
Scanrange	50-400 m/z
Injection volume	1 μL
Sample evaluation	m/z 226 Methyl pentadecanoate m/z 112 Test substance

Quantitative determination of the analyte:

Flow rate (mL/h)	Fraction No.	Water solubility of PRIFER 6813, mg/L	pH value
25.0	1 (1-2)	0.1	7.6
	2 (3-4)	0.2	7.4
	3 (5-6)	0.2	7.4
	4 (7-8)	0.3	7.4
	5 (9-10)	0.4	7.5
	6 (11-12)	0.4	7.5
	7 (13-14)	0.3	7.4
	8 (15-16)	0.3	7.3
12.5	1 (1-2)	0.5	7.2
	2 (3-4)	0.5	6.8
	3 (5-6)	0.5	7.1
	4 (7-8)	0.4	7.5
	5 (9-10)	0.4	7.6
	6 (11-12)	0.4	7.5
	7 (13-14)	0.5	7.5
	8 (15 -16)	0.5	7.2

pH value HPLC water: 6.7

The calibration curve fits over the whole working range from 0.06 to 3.89 mg/L with r²=0.9999. A linear fit was used.

Description of key information

0.4 mg/L at 20 °C, pH: 6.8-7.6 (EU Method A.6, column elution method)

Key value for chemical safety assessment

Water solubility:

0.4 mg/L

at the temperature of:

20 °C