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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
Reliability:
1 (reliable without restriction)
Qualifier:
according to
Guideline:
OECD Guideline 105 (Water Solubility)
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:
0.4 µg/L
Temp.:
22 °C
pH:
6
Remarks on result:
other: CoO 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:
6.4 µg/L
Temp.:
23 °C
pH:
5.99
Remarks on result:
other: CoO 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:
14 µg/L
Temp.:
23.1 °C
pH:
5.98
Remarks on result:
other: CoO 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:
38.6 µg/L
Temp.:
23 °C
pH:
6.1
Remarks on result:
other: CoO 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:
119.2 µg/L
Temp.:
23.3 °C
pH:
6.16
Remarks on result:
other: CoO 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:
602.8 µg/L
Temp.:
23.1 °C
pH:
6.05
Remarks on result:
other: CoO 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:
3.5 µg/L
Temp.:
21.4 °C
pH:
5.87
Remarks on result:
other: CoO 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:
52.8 µg/L
Temp.:
22.7 °C
pH:
6
Remarks on result:
other: CoO 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:
101.5 µg/L
Temp.:
22.1 °C
pH:
6
Remarks on result:
other: CoO 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:
229.2 µg/L
Temp.:
21.9 °C
pH:
6.22
Remarks on result:
other: CoO concentration at 96 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.
Conclusions:
Under the conditions of the transformation/dissolution test, the dissolution of CoO is 602.8 µg/L at 1 mg/L loading for the 28-day endpoint.
The dissolution of CoO is 607.6 µg/L at 10 mg/L loading for the 7-day endpoint.
The dissolution of CoO is 32825.0 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 CoO 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 CoO at a mass loading of 1 mg/L and at a pH of 6.0. Under the conditions of this test, the dissolution of CoO is 602.8 µg/L for the 28 -day endpoint (1 mg/L loading), 607.6 µg/L for the 7 -day endpoint (10 mg/L loading) and 32825.0 µg/L for the 7 -day endpoint (100 mg/L loading).
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Qualifier:
according to
Guideline:
OECD Guideline 105 (Water Solubility)
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:
607.6 µg/L
Temp.:
22.1 °C
pH:
6.11
Remarks on result:
other: CoO 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:
30.7 µg/L
Temp.:
21.5 °C
pH:
5.85
Remarks on result:
other: CoO 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:
663.5 µg/L
Temp.:
21.6 °C
pH:
6.1
Remarks on result:
other: CoO concentration at 24 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:
2 138 µg/L
Temp.:
21.2 °C
pH:
6.08
Remarks on result:
other: CoO concentration at 48 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:
18 581.5 µg/L
Temp.:
21.9 °C
pH:
6.21
Remarks on result:
other: CoO concentration at 96 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:
32 825 µg/L
Temp.:
21.1 °C
pH:
6.91
Remarks on result:
other: CoO 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 CoO is 602.8 µg/L at 1 mg/L loading for the 28-day endpoint.
The dissolution of CoO is 607.6 µg/L at 10 mg/L loading for the 7-day endpoint.
The dissolution of CoO is 32825.0 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 CoO 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 CoO at a mass loading of 1 mg/L and at a pH of 6.0. Under the conditions of this test, the dissolution of CoO is 602.8 µg/L for the 28 -day endpoint (1 mg/L loading), 607.6 µg/L for the 7 -day endpoint (10 mg/L loading) and 32825.0 µg/L for the 7 -day endpoint (100 mg/L loading).
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2009-03-31 to 2009-05-12
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP guideline study reliable without restrictions - The stability of the test susbtance was missing.
Qualifier:
according to
Guideline:
OECD Guideline 105 (Water Solubility)
Version / remarks:
, adopted 1995
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.6 (Water Solubility)
Version / remarks:
, 2008
Deviations:
no
GLP compliance:
yes (incl. certificate)
Remarks:
signed 2008-11-12
Type of method:
column elution method
Water solubility:
4.88 mg/L
Temp.:
20 °C
pH:
ca. 7.48
Water solubility:
3.27 mg/L
Temp.:
37 °C
pH:
ca. 7.76
Details on results:
During this study the water solubility of cobalt monoxide (C3PTL) at 20 °C and at 37 °C was found to be 4.88 mg/L at 20 °C and 3.27 mg/L at 37 °C using the column elution method.
Conclusions:
Interpretation of results (migrated information): slightly soluble (0.1-100 mg/L)
During this study the water solubility of cobalt monoxide (C3PTL) at 20 °C and at 37 °C was found to be 4.88 mg/L at 20 °C and 3.27 mg/L at 37 °C using the column elution method.

Description of key information

The water solubility of cobalt monoxide is 4.88 mg/L at 20 °C and 3.27 mg/L at 37 °C.

Key value for chemical safety assessment

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

Additional information