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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
Guideline:
OECD Guideline 105 (Water Solubility)
GLP compliance:
no
Remarks:
tests were following as close as possible the GLP guidelines proposed by OECD
Type of method:
flask method
Water solubility:
17.7 µg/L
Temp.:
21.4 °C
pH:
5.97
Remarks on result:
other: CoS 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:
82.3 µg/L
Temp.:
22.4 °C
pH:
5.93
Remarks on result:
other: CoS 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:
102.5 µg/L
Temp.:
22.7 °C
pH:
5.92
Remarks on result:
other: CoS 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:
124.4 µg/L
Temp.:
22.6 °C
pH:
6
Remarks on result:
other: CoS 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:
123.4 µg/L
Temp.:
23.2 °C
pH:
5.8
Remarks on result:
other: CoS 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:
103.7 µg/L
Temp.:
23.4 °C
pH:
6.06
Remarks on result:
other: CoS 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:
71.4 µg/L
Temp.:
21.1 °C
pH:
6.02
Remarks on result:
other: CoS 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:
425.6 µg/L
Temp.:
21.9 °C
pH:
6.04
Remarks on result:
other: CoS 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:
878.6 µg/L
Temp.:
21.8 °C
pH:
6.01
Remarks on result:
other: CoS 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:
1 027.5 µg/L
Temp.:
21.8 °C
pH:
6.15
Remarks on result:
other: CoS 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 CoS is 103.7 µg/L at 1 mg/L loading for the 28-day endpoint.
The dissolution of CoS is 1136.4 µg/L at 10 mg/L loading for the 7-day endpoint.
The dissolution of CoS is 7666.8 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 CoS 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 CoS at a mass loading of 1 mg/L and at a pH of 6.0. Under the conditions of this test, the dissolution of CoS is 103.7 µg/L for the 28 -day endpoint (1 mg/L loading), 11362.4 µg/L for the 7 -day endpoint (10 mg/L loading) and 7666.8 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
Guideline:
OECD Guideline 105 (Water Solubility)
GLP compliance:
no
Remarks:
tests were following as close as possible the GLP guidelines proposed by OECD
Type of method:
flask method
Water solubility:
1 136.4 µg/L
Temp.:
23.2 °C
pH:
6.02
Remarks on result:
other: CoS 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:
476.6 µg/L
Temp.:
20.1 °C
pH:
5.87
Remarks on result:
other: CoS 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:
3 338.9 µg/L
Temp.:
22.9 °C
pH:
6.16
Remarks on result:
other: CoS concentration at 24hour 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:
5 503.9 µg/L
Temp.:
22.4 °C
pH:
6.17
Remarks on result:
other: CoS 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:
6 380.4 µg/L
Temp.:
22.1 °C
pH:
6.23
Remarks on result:
other: CoS 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:
7 666.8 µg/L
Temp.:
21.9 °C
pH:
6.36
Remarks on result:
other: CoS 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 CoS is 103.7 µg/L at 1 mg/L loading for the 28-day endpoint.
The dissolution of CoS is 1136.4 µg/L at 10 mg/L loading for the 7-day endpoint.
The dissolution of CoS is 7666.8 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 CoS 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 CoS at a mass loading of 1 mg/L and at a pH of 6.0. Under the conditions of this test, the dissolution of CoS is 103.7 µg/L for the 28 -day endpoint (1 mg/L loading), 1136.4 µg/L for the 7 -day endpoint (10 mg/L loading) and 7666.8 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
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:
19.1 µg/L
Temp.:
21.4 °C
pH:
5.97
Remarks on result:
other: CoS 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:
90.8 µg/L
Temp.:
22.4 °C
pH:
5.93
Remarks on result:
other: CoS 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:
113.2 µg/L
Temp.:
22.7 °C
pH:
5.92
Remarks on result:
other: CoS 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:
137.5 µg/L
Temp.:
22.6 °C
pH:
6
Remarks on result:
other: CoS 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:
136.5 µg/L
Temp.:
23.2 °C
pH:
5.8
Remarks on result:
other: CoS 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:
114.5 µg/L
Temp.:
23.4 °C
pH:
6.06
Remarks on result:
other: CoS 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:
78.7 µg/L
Temp.:
21.1 °C
pH:
6.02
Remarks on result:
other: CoS 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:
472.3 µg/L
Temp.:
21.9 °C
pH:
6.04
Remarks on result:
other: CoS 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:
975.6 µg/L
Temp.:
21.8 °C
pH:
6.01
Remarks on result:
other: CoS 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:
1 141 µg/L
Temp.:
21.8 °C
pH:
6.15
Remarks on result:
other: CoS 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 CoS is 114.5 µg/L at 1 mg/L loading for the 28-day endpoint.
The dissolution of CoS is 1262.1 µg/L at 10 mg/L loading for the 7-day endpoint.
The dissolution of CoS is 8518.0 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 CoS 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 CoS at a mass loading of 1 mg/L and at a pH of 6.0. Under the conditions of this test, the dissolution of CoS is 114.5 µg/L for the 28 -day endpoint (1 mg/L loading), 1262.1 µg/L for the 7 -day endpoint (10 mg/L loading) and 8518.0 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
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:
1 262.1 µg/L
Temp.:
23.2 °C
pH:
6.02
Remarks on result:
other: CoS 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:
528.9 µg/L
Temp.:
20.1 °C
pH:
5.87
Remarks on result:
other: CoS 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:
3 709.3 µg/L
Temp.:
22.9 °C
pH:
6.16
Remarks on result:
other: CoS 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:
6 114.7 µg/L
Temp.:
22.4 °C
pH:
6.17
Remarks on result:
other: CoS 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:
7 088.7 µg/L
Temp.:
22.1 °C
pH:
6.23
Remarks on result:
other: CoS 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:
8 518 µg/L
Temp.:
21.9 °C
pH:
6.36
Remarks on result:
other: CoS 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 CoS is 114.5 µg/L at 1 mg/L loading for the 28-day endpoint.
The dissolution of CoS is 1262.1 µg/L at 10 mg/L loading for the 7-day endpoint.
The dissolution of CoS is 8518.0 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 CoS 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 CoS at a mass loading of 1 mg/L and at a pH of 6.0. Under the conditions of this test, the dissolution of CoS is 114.5 µg/L for the 28 -day endpoint (1 mg/L loading), 1262.1 µg/L for the 7 -day endpoint (10 mg/L loading) and 8518.0 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:
2009-02-25 to 2009-04-24
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 105 (Water Solubility)
Version / remarks:
, adopted 1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.6 (Water Solubility)
Version / remarks:
, 2008
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
signed 2008-11-12
Type of method:
flask method
Water solubility:
1 240.3 mg/L
Temp.:
20 °C
pH:
ca. 7.08
Water solubility:
1 172.6 mg/L
Temp.:
37 °C
pH:
ca. 7.09
Details on results:
During the study the water solubility of cobalt sulfide at 20 °C and at 37 °C were determined and found to be 1240.3 mg/L at 20 °C and 1172.6 mf/L at 37 °C using the flask method.
Conclusions:
Interpretation of results: soluble (1000-10000 mg/L)
During the study the water solubility of cobalt sulfide at 20 °C and at 37 °C were determined and found to be 1240.3 mg/L at 20 °C and 1172.6 mg/L at 37 °C using the flask method.

Description of key information

Cobalt sulfide has a water solubility of 1240.3 mg/L at 20 °C and 1172.6 mg/L at 37 °C.

Key value for chemical safety assessment

Water solubility:
1 240.3 mg/L
at the temperature of:
20 °C

Additional information