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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:
2009-06-24 until 2009-10-15
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to other study
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
Groupe Interministeriel Des Prodiuits Chimique, 2008-05-12
Type of method:
flask method
Key result
Water solubility:
38.46 mg/L
Temp.:
20 °C
pH:
4.27
Details on results:
Test at time 48 h: solubility 38.77 mg/l at pH 4.25
Test at time 72 h: solubility 38.15 mg/l at pH 4.29

Water solubility results are presented in the following table :

Sample

pH

Test item concentration, mg/L

T24 h

4.25

(45.83)

T48 h

4.25

38.77

T72 h

4.29

38.15

Mean Value

-

38.46

As required by the Guideline, the concentrations measured in the 2 last vessels do not differ by more than 15 %.

Thus, as shown by these results, the water solubility at 20 °C of10-UNDECENOIC ACIDis 38.46 mg/L.

Conclusions:
Interpretation of results (migrated information): slightly soluble (0.1-100 mg/L)
The water solubility of the test item 10-UNDECENOIC ACID was assessed according to the OECD Guideline 105. The result was 38.46 mg/l at 20 °C and at pH 4.27.
Executive summary:

The water solubility of the test item 10-UNDECENOIC ACID was assessed according to the OECD Guideline 105. During the analysis, the temperature was 20 °C and the mean value of pH was 4.27. The result was 38.46 mg/l, thus the substance is considered slightly soluble.

Description of key information

One key study according to OECD Guideline 105 resulted in 38.46 mg/l at 20 °C (pH 4.27). The result is supported by a non-guideline supporting study (acid-base titration). According to this publication, the test item appears to have a lower water solubility degree under neutral or more alkaline pH conditions. 

Key value for chemical safety assessment

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

Additional information

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