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Water solubility

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Reference
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
October from 27 to 30, 2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail
Qualifier:
according to guideline
Guideline:
EU Method A.6 (Water Solubility)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Deviations:
no
GLP compliance:
no
Type of method:
flask method
Water solubility:
705.6 g/L
Conc. based on:
test mat.
Incubation duration:
24 - 72 h
Temp.:
20 °C
Remarks on result:
other: pH not specified
Details on results:
The recovery for the determination of test item in water was 99.5 %, indicating a sufficient accuracy of the analytical method.

PRELIMINARY ESTIMATION OF THE WATER SOLUBILITY
The preliminary visual experiments showed that the water solubility of the test item is between 500 g/l and 1000 g/l.

DETERMINATION OF THE SOLUBILITY IN THE WATER - FLASK METHOD

Experiment  A B C D (blank)
Amount of test item (mg) 6000 6000 6000 --
Stirring time at 30 °C (h) 24 48 72 72
Measured concentration (mg/l) 8.7 9.0 8.8 --
Dilution

0.01 ml/10 ml

0.05 ml/4 ml

0.01 ml/10 ml

0.05 ml/4 ml

0.01 ml/10 ml

0.05 ml/4 ml

--
n-Octanol solubility (g/l)

695.3

718.5

703.1

--

PRELIMINARY VISUAL ESTIMATION

Amount of the test item in mg

Total volume in ml

Appearance of mixture

1000

1

undissolved

1000

2

dissolved

Appearance of the test mixtures

Conclusions:
Water solubility: 705.6 g/l at 20 °C
Executive summary:

The water solubility of the test item was investigated in a study conducted according to OECD Guideline 105 and EU Method A.6. Flask method was used for this purpose, while UV VIS-spectroscopy was used for the detection of the concentration of the test item. Based on the findings of the study, the water solubility of the test item at a temperature of 20 °C was determined to be 705.6 g/l.

Conclusion

Water solubility: 705.6 g/l at 20 °C

Description of key information

705.6 g/l at 20 °C

Key value for chemical safety assessment

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

Additional information

OECD Guidelines 105 - flask method