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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:
January 25, 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 105 (Water Solubility)
GLP compliance:
no
Type of method:
flask method
Key result
Water solubility:
66.67 g/L
Temp.:
20 °C
pH:
8.27
Remarks on result:
other: Average solubility
Details on results:
PRELIMINARY SOLUBILITY RESULT
Reference samples and extract were first measured in the range 190 / 800 nm, so as to choose the right wavelength for quantitative measurements.
Since absorbance of the test solution kept the same proportions along the UV and visible spectra, preliminary test result was considered for the final results calculations. Wavelength chosen was 396.00 nm.

TEST RESULTS
Test 1 (24 hrs): 68.73 g/l
Test 2 (48 hrs): 62.59 g/l
Test 3 (96 hrs): 53.52 g/l

pH mother solution: 6.40
pH of satured solution: 8.27
Conclusions:
Average solubility: 66.67 g/l at 20 °C and pH 8.27
very soluble (> 10000 mg/L)
Executive summary:

Solubility was performed following the recommendations of the OECD method 105.

Since absorbance of the test solution kept the same proportions along the UV and visible spectra, preliminary test result was considered for the final results calculations. Wavelength chosen was 396.50 nm.

Test 1 (24 hrs): 68.73 g/l

Test 2 (48 hrs): 62.59 g/l

Test 3 (96 hrs): 53.52 g/l

pH mother solution: 6.40

pH of satured solution: 9.27

Conclusion

Average solubility: 66.67 g/l at 20 °C and pH 8.27

Description of key information

66.67 g/l at 20 °C and pH 8.27

Key value for chemical safety assessment

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

Additional information

Shake Flask method - OECD 105