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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:
2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 105 (Water Solubility)
Version / remarks:
adopted on 27th July 1995: “Water Solubility”
Deviations:
not specified
GLP compliance:
not specified
Type of method:
flask method
Key result
Conc. based on:
test mat.
Incubation duration:
ca. 1 d
Temp.:
20 °C
pH:
ca. 1.64
Remarks on result:
other: Hydrolysis of sample occurred and the test method is not applicable.
Remarks:
Hydrolysis of sample occurred and the test method is not applicable.
Key result
Conc. based on:
test mat.
Incubation duration:
ca. 2 d
Temp.:
20 °C
pH:
ca. 1.23
Remarks on result:
other: Hydrolysis of sample occurred and the test method is not applicable.
Remarks:
Hydrolysis of sample occurred and the test method is not applicable.
Key result
Conc. based on:
test mat.
Incubation duration:
ca. 3 d
Temp.:
20 °C
pH:
ca. 1.18
Remarks on result:
other: Hydrolysis of sample occurred and the test method is not applicable.
Remarks:
Hydrolysis of sample occurred and the test method is not applicable.
Details on results:
- Result of preliminary test
0.10 g sample was weighted and 100 mL water was added. Sample was not dissolved completely.

- Result of test
1) The result of preliminary test shows that the solubility of sample is smaller than 1 g/L. Three vessels were prepared and 0.5 g sample was weighed into each vessel, and 50mL water was added into each vessel. The vessels were equilibrated for 1d, 2d and 3d respectively, with occasional shaking, after which the pH values of the aqueous phase was analyzed to be 1.64, 1.23 and 1.18, and the amount of undissolved solids decreased with pH, which shows that hydrolysis reaction occurred. The aqueous solution was also analyzed by GC, the signal of sample increased significantly. However this increase is due to the hydrolysis rather than dissolve, the test method is not applicable.

2) Hydrolysis of sample occurred and the test method is not applicable.
Conclusions:
According to the test result, hydrolysis of 1,3,2-dioxathiane 2,2-dioxide (EC:214-022-5) occurred and the test method is not applicable.

Description of key information

Test was carried out according to the "Flask method" in OECD Guidelines for the Testing of Chemicals, Method No. 105, adopted on 27th July 1995: “Water Solubility”.

Key value for chemical safety assessment

at the temperature of:
20 °C

Additional information

Hydrolysis of 1,3,2-dioxathiane 2,2-dioxide (EC:214-022-5) occurred and the test method is not applicable.