Registration Dossier

Diss Factsheets

Physical & Chemical properties

Water solubility

Currently viewing:

Administrative data

Link to relevant study record(s)

water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
May 2018
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Justification for type of information:
The test was considered as reliable with restriction as it was not performed under GLP and that because of the very high solubility of the test item (> 100 g/L), only an upper value could be determined due to HPLC analytical limitations.
equivalent or similar to guideline
OECD Guideline 105 (Water Solubility)
GLP compliance:
Type of method:
flask method
Key result
Water solubility:
>= 144 g/L
Conc. based on:
test mat.
Loading of aqueous phase:
144 g/L
Incubation duration:
ca. 24 h
25 °C
ca. 6.7
Remarks on result:
completely miscible

Measuring very high solubilities is challenging from a materials-handling perspective as such concentrated samples often form gels and are too viscous to filter, making it difficult to determine what is actually dissolved. The response of the HPLC instrument is also generally no longer linear, making calibration challenging. That is why only an upper value could be determined during this test.

The solubility of the test item in water was ≥ 144 g/L at 25°C and pH 6.7.

Description of key information

The solubility of the test item in water is ≥ 144 g/L at 25°C and pH 6.7.

Key value for chemical safety assessment

Additional information

Testing was conducted according to the flask method with HPLC analysis (OECD 105).