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Diss Factsheets

Administrative data

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
19 Jan - 27 March 2018
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report date:
2018

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method A.6 (Water Solubility)
GLP compliance:
not specified
Type of method:
flask method

Test material

1
Reference substance name:
Fatty acids, C16-18 (even numbered) and C18 (unsaturated) (9Z)-octadec-9-enyl esters.
EC Number:
701-212-2
Cas Number:
869110-10-1
Molecular formula:
R1, R2, R3: C15-, C17- saturated, C17- unsaturated alkyl chains
IUPAC Name:
Fatty acids, C16-18 (even numbered) and C18 (unsaturated) (9Z)-octadec-9-enyl esters.
Specific details on test material used for the study:
Batch no: XP3687

Results and discussion

Water solubility
Key result
Water solubility:
< 200 mg/L
Conc. based on:
test mat.
Temp.:
25 °C
pH:
6.5 - 7.1
Remarks on result:
other: Chemical analysis was carried out for three main chemical groups in the UVCB substance. The LOQ for one of the components was far to high for a proper determination of the water solubility via analysis.
Remarks:
Added to this, the test substance was difficult to filter adding to the uncertainty of the water solubility measurement.
Details on results:
Please see the attached report.

Applicant's summary and conclusion

Conclusions:
Due to lack of sensitivity for oleyl esters the total solubility is expected to be sigificantly lower than the reported value of <200 mg/L. Determination of the water solubility by adding substance to a water solution until the solutions become cloudy (measured by turbidity) resulted in a water solubility of 0.2 mg/L also supports the lower water solubility value.
Executive summary:

The test solutions were dIfficult to filter. Due to lack of sensitivity for oleyl esters the total solubility is expected to be sigificantly lower than the reported value of <200 mg/L. Determined partition coefficient value of 0.2 mg/L also supports the lower water solubility value.