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EC number: 215-157-2 | CAS number: 1308-06-1
Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- GLP compliance:
- no
- Type of method:
- flask method
- Water solubility:
- 46.8 µg/L
- Temp.:
- 21.5 °C
- pH:
- 6
- Remarks on result:
- other: Co3O4 concentration at 24 hour sampling time at 100 mg/L loading. Average value from the tests of the four laboratories is given on a log10-scale.
- Water solubility:
- 17.5 µg/L
- Temp.:
- 21.5 °C
- pH:
- ca. 6
- Remarks on result:
- other: Co3O4 concentration at 672 hour sampling time at 1 mg/L loading. Average value from the tests of the four laboratories is given on a log10-scale.
- Water solubility:
- 3.32 µg/L
- Temp.:
- 21.5 °C
- pH:
- ca. 6
- Remarks on result:
- other: Co3O4 concentration at 168 hour sampling time at 1 mg/L loading. Average value from the tests of the four laboratories is given on a log10-scale.
- Water solubility:
- 33.5 µg/L
- Temp.:
- 21.5 °C
- pH:
- ca. 6
- Remarks on result:
- other: Co3O4 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:
- 169 µg/L
- Temp.:
- 21.5
- pH:
- ca. 6
- Remarks on result:
- other: Co3O4 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 Co3O4 is 1.03 on a log10-scale at 1 mg/L loading for the 28-day endpoint.
The dissolution of Co3O4 is 1.41 on a log10-scale at 10 mg/L loading for the 7-day endpoint.
The dissolution of Co3O4 is 2.12 on a log10-scale 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 Co3O4 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 Co3O4 at a mass loading of 1 mg/L and at a pH of 6.0. Under the conditions of this test, the dissolution of Co3O4 is 1.03 on a log10 -scale for the 28 -day endpoint (1 mg/L loading), 1.41 on a log10 -scale for the 7 -day endpoint (10 mg/L loading) and 2.12 on a log10 -scale for the 7 -day endpoint (100 mg/L loading).
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2005-08-18 to 2005-09-21
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- The stability of the test material was not available.
- 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 2003-03
- Type of method:
- column elution method
- Water solubility:
- >= 1.56 - <= 1.68 mg/L
- Temp.:
- 20 °C
- pH:
- >= 6.96 - <= 7.48
- Water solubility:
- >= 5.1 - <= 5.56 mg/L
- Temp.:
- 37 °C
- pH:
- >= 6.62 - <= 7.31
- Details on results:
- Total elution times were about 93 hours at 20 °C and 115.5 hours at 37 °C. The measured results differ by less than 30 %. Therefore, the study is considered to be valid.
The water solubility was not corrected for the purity of the test item. - Conclusions:
- Interpretation of results: slightly soluble (0.1-100 mg/L)
The water solubility of Tricobalt Tetraoxide was found to be at 20°C 1.62 mg/L and at 37°C 5.33 mg/L using the column elution method.
Referenceopen allclose all
Description of key information
Tricobalt tetraoxide has a water solubility 1.62 mg/L at 20 °C and 5.33 mg/L at 37 °C .
Key value for chemical safety assessment
- Water solubility:
- 1.62 mg/L
- at the temperature of:
- 20 °C
Additional information
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