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Water solubility

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water solubility
Type of information:
experimental study
Adequacy of study:
key study
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to
OECD Guideline 105 (Water Solubility)
GLP compliance:
yes (incl. certificate)
Type of method:
flask method
Specific details on test material used for the study:
- Physical Appearance: Colourless liquid
- Date of Expiry: 12/07/2018
- Storage Condition: Ambient (21 to 29°C)
Key result
Water solubility:
115.61 mg/L
Conc. based on:
test mat.
Incubation duration:
>= 24 - <= 72 h
20 °C
Details on results:
System suitability: System suitability meets the acceptance criterion as the % RSD obtained was 0.53% to 2.46% which is less than 5.0%.
Specificity: Specificity meets the acceptance criterion for the test substance as the interference obtained for diluent was 2.57% and diluent fortified with water was 7.14% which is < 30% of the standard response at LOQ.
Limit of Detection (LOD) and Limit of Quantification (LOQ): The LOD was determined at 0.80 mg/L and LOQ was determined at 4.00 mg/L
Linearity: Linearity meets the acceptance criterion as the correlation coefficient obtained was 0.9956 to 0.9996 which is > 0.99.
Accuracy (% Recovery) and Precision (% RSD): Recovery meets the acceptance criterion as the % recovery obtained was 106.80% for LOQ (4.03 mg/L) and 106.55% for 10 LOQ (40.27 mg/L) which is within the range 70% to 110% of the nominal concentration at each fortification level. Precision meets the acceptance criterion as the % RSD obtained was 1.07% for LOQ (4.03 mg/L) and 1.90% for 10 LOQ (40.27 mg/L) which is < 20%.
Preliminary Test: Preliminary result indicated that the test item had a solubility of more than 10-2 g/L in milli-Q water.
Definitive Test: The solubility of the test substance in Milli-Q water was determined to be 138.14 mg/L for 24 hours, 114.15 mg/L for 48 hours and 117.06 mg/L for 72 hours at 20°C. Note: The concentration obtained at 20°C for 24 hours was above the linearity range so the result was not considered and subsequently the % RSD was calculated only for the 48 and 72 hours samples. The mean solubility was found to be 115.61 mg/L at 20°C with 1.78% RSD by the Shake flask method.

Description of key information

The water solubility of the test substance is 115.61 mg/L (OECD 105 and GLP).

Key value for chemical safety assessment

Water solubility:
115.61 mg/L
at the temperature of:
20 °C

Additional information