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Physical & Chemical properties

Water solubility

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Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2006-09-19 to 2006-12-04
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Version / remarks:
, 1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.6 (Water Solubility)
Version / remarks:
, 1992
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
signed 2005-11
Type of method:
column elution method
Water solubility:
304.47 µg/L
Temp.:
20 °C
pH:
ca. 7.46
Remarks on result:
other: 304.47 µg/L +/- 26.9
Water solubility:
304.49 µg/L
Temp.:
37 °C
pH:
ca. 7.41
Remarks on result:
other: 304.49 µg/L +/- 26.2
Details on results:
The water solubility of the test item was determined at 20°C and at 37°C using the column elution method and was found to be 304µg/L at 20°C and 304µg/L at 37°C.
Conclusions:
Interpretation of results: slightly soluble (0.1-100 mg/L)
The water solubility of Lithium cobalt dioxide was determined at 20°C and at 37°C. The water solubility was found to be
At 20°C: 304µg/L (+/-27µg/L)
At 37°C: 304µg/L (+/-26µg/L)
using the column elution method
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Qualifier:
according to guideline
Guideline:
other: The standard operating procedure for the transformation/dissolution of metals and sparingly soluble metal compounds, version February 2004.
GLP compliance:
no
Remarks:
The tests were following as close as possible the GLP guidelines proposed by OECD
Type of method:
flask method
Water solubility:
0.1 µg/L
Temp.:
20.7 °C
pH:
6.12
Remarks on result:
other: Cobalt lithium dioxide concentration at 0 hour sampling time at 1 mg/L loading. Sample analysis was conducted in triplicate per test vessel (3 test vessels per loading). Average value from the tests is given.
Water solubility:
2 µg/L
Temp.:
23.7 °C
pH:
6.12
Remarks on result:
other: Cobalt lithium dioxide concentration at 24 hour sampling time at 1 mg/L loading. Sample analysis was conducted in triplicate per test vessel (3 test vessels per loading). Average value from the tests is given.
Water solubility:
2.4 µg/L
Temp.:
20.4 °C
pH:
6.02
Remarks on result:
other: Cobalt lithium dioxide concentration at 48 hour sampling time at 1 mg/L loading. Sample analysis was conducted in triplicate per test vessel (3 test vessels per loading). Average value from the tests is given.
Water solubility:
2.8 µg/L
Temp.:
22 °C
pH:
6
Remarks on result:
other: Cobalt lithium dioxide concentration at 96 hour sampling time at 1 mg/L loading. Sample analysis was conducted in triplicate per test vessel (3 test vessels per loading). Average value from the tests is given.
Water solubility:
3.3 µg/L
Temp.:
21.6 °C
pH:
6.03
Remarks on result:
other: Cobalt lithium dioxide concentration at 168 hour sampling time at 1 mg/L loading. Sample analysis was conducted in triplicate per test vessel (3 test vessels per loading). Average value from the tests is given.
Water solubility:
4.1 µg/L
Temp.:
21.2 °C
pH:
6.02
Remarks on result:
other: Cobalt lithium dioxide concentration at 672 hour sampling time at 1 mg/L loading. Sample analysis was conducted in triplicate per test vessel (3 test vessels per loading). Average value from the tests is given.
Water solubility:
1.6 µg/L
Temp.:
22.9 °C
pH:
6.2
Remarks on result:
other: Cobalt lithium dioxide concentration at 0 hour sampling time at 10 mg/L loading. Sample analysis was conducted in triplicate per test vessel (3 test vessels per loading). Average value from the tests is given.
Water solubility:
21.3 µg/L
Temp.:
22.9 °C
pH:
6.02
Remarks on result:
other: Cobalt lithium dioxide concentration at 24 hour sampling time at 10 mg/L loading. Sample analysis was conducted in triplicate per test vessel (3 test vessels per loading). Average value from the tests is given.
Water solubility:
27.1 µg/L
Temp.:
22.9 °C
pH:
6.09
Remarks on result:
other: Cobalt lithium dioxide concentration at 48 hour sampling time at 10 mg/L loading. Sample analysis was conducted in triplicate per test vessel (3 test vessels per loading). Average value from the tests is given.
Water solubility:
36.4 µg/L
Temp.:
22.9 °C
pH:
6.13
Remarks on result:
other: Cobalt lithium dioxide concentration at 168 hour sampling time at 10 mg/L loading. Sample analysis was conducted in triplicate per test vessel (3 test vessels per loading). Average value from the tests is given.
Water solubility:
13 µg/L
Temp.:
22.7 °C
pH:
6.13
Remarks on result:
other: Cobalt lithium dioxide concentration at 0 hour sampling time at 100 mg/L loading. Sample analysis was conducted in triplicate per test vessel (3 test vessels per loading). Average value from the tests is given.
Water solubility:
315.9 µg/L
Temp.:
22.9 °C
pH:
6.01
Remarks on result:
other: Cobalt lithium dioxide concentration at 168 hour sampling time at 100 mg/L loading. Sample analysis was conducted in triplicate per test vessel (3 test vessels per loading). Average value from the tests is given.
Conclusions:
Under the conditions of the transformation/dissolution test, the dissolution of Cobalt lithium dioxide is 4.1 µg/L at 1 mg/L loading for the 28-day endpoint.
The dissolution of Cobalt lithium dioxide is 36.4 µg/L at 10 mg/L loading for the 7-day endpoint.
The dissolution of Cobalt lithium dioxide is 315.9 µg/L at 100 mg/L loading for the 7-day endpoint.
Executive summary:
A seven day transformation/dissolution test according to the OECD guideline 29 and the GHS (Annex 10) protocol was run on Cobalt lithium dioxide at a mass loading of 10 and 100 mg/L, at a pH of 6.0. Also a 28 day transformation/dissolution was run on Cobalt lithium dioxide at a mass loading of 1 mg/L and at a pH of 6.0. Under the conditions of this test, the dissolution of Cobalt lithium dioxide is 4.1 µg/L for the 28-day endpoint (1 mg/L loading), 36.4 µg/L for the 7-day endpoint (10 mg/L loading) and 315.9 µg/L for the 7-day endpoint (100 mg/L loading).

Description of key information

Water solubility of lithium cobalt dioxide (column elution method, guideline study results): 304 µg/L at 20 °C and at 37 °C.

Key value for chemical safety assessment

Water solubility:
304 µg/L
at the temperature of:
20 °C

Additional information

The water solubility of lithium cobalt dioxide was determined according to OECD guideline 105 with the column elution method. During this study the water solubility of the test item was found to be 304 µg/L at 20 °C and at 37 °C.