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Physical & Chemical properties

Water solubility

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Reference
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2016-04-04 to 2016-01-11
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reference:
Composition 0
Qualifier:
according to
Guideline:
OECD Guideline 105 (Water Solubility)
Version / remarks:
1995
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.6 (Water Solubility)
Version / remarks:
2014
Deviations:
no
GLP compliance:
yes (incl. certificate)
Remarks:
Loack Laboratorien GmbH, Käthe-Paulus-Str. 1, 31157 Sarstedt, Germany.
Type of method:
flask method
Test material information:
Composition 1
Key result
Water solubility:
2.89 g/L
Conc. based on:
test mat.
Incubation duration:
24 h
Temp.:
20 °C
pH:
2.9

Table 1: Water Solubility Results at 20 °C

Preincubation time

Replicate No.

Test substance [g/L]

Concentration

Mean

24 h

1

2.89

2.89

2

2.89

48 h

1

2.95

2.95

2

2.96

72 h

1

2.80

2.83

2

2.86

Mean (24 – 72 h)

 

2.89

Deviation [%] (24 – 72 h)

4.3

Conclusions:
The water solubility of the test substance was determined to be 2.89 mg/L (20 °C, pH 2.9).
Executive summary:

The water solubility of the test substance was determined according to EU Method A.6 and OECD Guideline 105 by the flask method. Approx. 13 g/L in double distilled water was used as application dose, corresponding to 600 µL/test vessel. The study was conducted at 20 ± 0.5 °C. The test mixture replicates were preincubated at 30 ± 0.5 °C with constant stirring at approx. 300 rpm for 72, 48 and 24 h, respectively. After preincubation, the temperature was reduced to the test temperature of 20 ± 0.5 °C for 24 h with stirring at approx. 100 rpm. The samples were taken 24 h after reduction to the test temperature. Analytical quantification of the test substance was carried out via HPLC-DAD on a reversed phase analytical column. The water solubility of the test substance was determined to be 2.89 mg/L at 20 °C (pH 2.9).

Description of key information

The water solubility of the test substance was determined to be 2.89 g/L (20 °C, pH 2.9).

Key value for chemical safety assessment

Water solubility:
2.89 g/L
at the temperature of:
20 °C

Additional information

The water solubility of the test substance was determined to be 2.89 g/L (20 °C, pH 2.9) using flask method according to OECD TG 105 (1995) and GLP.