Cobalt-containing Substance Grouping
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Certain cobalt-containing substances are among those identified as priorities for action for the second phase of the Chemicals Management Plan (CMP). The selection of these cobalt-containing substances for action is based on the categorization process completed in 2006, and new information received as part of the first phase of the CMP. Cobalt-containing substances have been identified both domestically and internationally to be a priority for further assessment.
- Adding substances to Schedule 1
- Summary of publications
- Final screening assessment and proposed risk management approach
- Draft screening assessment and risk management scope
- Submissions received
Adding substances to Schedule 1
Cobalt and soluble cobalt compounds are proposed to be added to Schedule 1.
- Proposed order adding cobalt and soluble cobalt compounds: Canada Gazette, Part I: Vol. 151, No. 25 – June 24, 2017 (PDF version – 2,306 K).
Summary of publications
The current screening assessment focuses on the cobalt moiety and thereby includes cobalt in its elemental form, cobalt-containing substances and cobalt released in dissolved, solid or particulate form. As such, it is not limited to consideration of the fifty substances having met the categorization criteria.
|CAS RN||Chemical substance||Proposed order and RIAS||Public comments on the draft screening assessment and risk management scope||Final screening assessment||Proposed risk management approach|
|513-79-1||Carbonic acid, cobalt(2+) salt (1:1)||HTML||HTML||HTML||HTML|
|7440-48-4Table 1 footnote 1||Cobalt|
|7542-09-8||Carbonic acid, cobalt salt|
|7646-79-9Table 1 footnote 1||Cobalt chloride|
|10124-43-3Table 1 footnote 1||Sulfuric acid, cobalt(2+) salt (1:1)|
|10141-05-6||Nitric acid, cobalt(2+) salt|
|10393-49-4Table 1 footnote 1||Cobalt sulfate|
|10534-89-1||Cobalt(3+), hexaammine-, trichloride, (OC-6-11)-|
|13455-25-9||Chromic acid (H2CrO4), cobalt(2+) salt (1:1)|
|13455-36-2||Phosphoric acid, cobalt(2+) salt (2:3)|
|13782-01-9||Cobaltate(3-), hexakis(nitrito-N)-, tripotassium, (OC-6-11)-|
|71-48-7||Acetic acid, cobalt(2+) salt|
|136-52-7||Hexanoic acid, 2-ethyl-, cobalt(2+) salt|
|1560-69-6||Propanoic acid, cobalt(2+) salt|
|6700-85-2||Octanoic acid, cobalt salt|
|13586-82-8||Hexanoic acid, 2-ethyl-, cobalt salt|
|13586-84-0||Octadecanoic acid, cobalt salt|
|27253-31-2||Neodecanoic acid, cobalt salt|
|27685-51-4||Cobaltate(2-), tetrakis(thiocyanato-N)-, mercury(2+) (1:1), (T-4)-|
|38582-17-1||Cyclohexanebutanoic acid, cobalt(2+) salt|
|10210-68-1||Cobalt, di-µ-carbonylhexacarbonyldi-, (Co-Co)|
|8011-87-8||C.I. Pigment Green 19|
|67711-89-1||Calcines, copper roasting|
|68186-89-0||C.I. Pigment Black 25|
|68187-11-1||C.I. Pigment Blue 36|
|68608-93-5||C.I. Pigment Violet 48|
|68610-13-9||C.I. Pigment Violet 47|
|69012-71-1||Leach residues, zinc ore-calcine, cobalt repulp|
|69012-72-2||Leach residues, zinc ore-calcine, zinc cobalt|
|72869-37-5||Zinc sulfide (ZnS), cobalt and copper-doped|
|91053-46-2||Leach residues, zinc ore-calcine, cadmium-copper ppt.|
|121053-29-0||Slimes and Sludges, cobalt refining|
|121053-30-3||Slimes and Sludges, cobalt electrolytic|
|124222-14-6||Flue dust, cobalt-refining|
|124222-18-0||Residues, precious metal-refining|
|129618-36-6||Solutions, copper hydrometallurgical|
|129618-39-9||Solutions, cobalt hydrometallurgical|
|61789-51-3||Naphthenic acids, cobalt salts|
|68457-13-6||Cobalt, borate neodecanoate complexes|
|68988-10-3||Zirconium, dipropylene glycol iso-Bu alc. neodecanoate propionate cobalt complexes|
|If needed, information gathering tools could be used to inform potential risk management actions.|
|August 23, 2017||Deadline for submission of public comments on the proposed order adding cobalt and soluble cobalt compounds to Schedule 1 of the Canadian Environmental Protection Act, 1999 (CEPA 1999).|
|July 26, 2017||Deadline for submission of public comments on the Proposed Risk Management Approach Document for Cobalt and Soluble Cobalt Compounds.|
|June 24, 2017||Publication in Canada Gazette of proposed order adding cobalt and soluble cobalt compounds to Schedule 1 of CEPA 1999, and start of 60-day public comment period.|
|May 27, 2017||Publication in Canada Gazette of the final screening assessment decisions under subsection 77(6) of CEPA 1999, release of Government's Proposed Risk Management Approach Document for Cobalt and Soluble Cobalt Compounds and start of 60-day public comment period on the proposed risk management approach document.|
|February 4, 2015||Deadline for submission of public comments on the draft screening assessment and the risk management scope document.|
|December 6, 2014||Publication in Canada Gazette and start of 60-day public comment period on (a) the draft screening assessment and (b) the Risk Management Scope Document for Cobalt and Cobalt-containing Substances.|
|December 3, 2012||Deadline for submission of any voluntary information by interested stakeholders.|
|October 2, 2012||Deadline for submission of information for the cobalt section 71 Notice (without an extension).|
|June 2, 2012||Release of the section 71 Notice with respect to certain cobalt-containing substances and the accompanying technical documents.|
|March 30, 2010||Deadline for submission of information for the section 71 Notice for Phase 1 of the Domestic Substances List (DSL) inventory update (without an extension).|
|December 17, 2009||Deadline for submission of additional information by interested stakeholders, including on the extent and nature of the management/stewardship of Batch 10 substances.|
|October 20, 2009||Deadline for submission of information under the section 71 Notice on Batch 10 substances (if no extension granted).|
|October 3, 2009||Release of the Section 71 Notice for Phase 1 of the DSL inventory update.|
|June 20, 2009||Release of Batch 10 of the Challenge and associated section 71 Survey.|
Final screening assessment and proposed risk management approach
In May 2017, the Final Screening Assessment for Cobalt and Cobalt-containing Substances was released and the related Notice was published in the Canada Gazette, Part I: Vol.151, No. 21 – May 27, 2017 (PDF version – 3,133 K).
The final screening assessment concludes that cobalt and soluble cobalt compounds are harmful to the environment and meet the criteria under paragraph 64(a) of CEPA 1999. It is proposed that cobalt and soluble cobalt compounds be recommended for addition to the List of Toxic Substances in Schedule 1 to CEPA 1999 based on environmental concerns. It is also proposed that cobalt and cobalt from cobalt-containing substances are not harmful to human health. A proposed risk management approach document for cobalt and soluble cobalt compounds was also released on this date for a 60-day public comment period.
The screening assessment focuses on exposure to cobalt from all sources, and thereby considers cobalt in its elemental form, cobalt-containing substances and cobalt released in dissolved, solid or particulate form. All substances that have the potential to dissolve, dissociate and/or degrade to release cobalt through various transformation pathways can potentially contribute to the exposure of humans and other living organisms to bioavailable forms of cobalt. Four substances that were assessed individually in Batch 10 of the Challenge Initiative of the CMP are included in this assessment given they contribute to exposure to the cobalt moiety.
Draft screening assessment and risk management scopeIn December 2014, the draft screening assessment was released and the related Notice was published in the Canada Gazette, Part I: Vol. 148, No.49 - December 6, 2014 ( PDF version - 1,247 K). A risk management scope document for cobalt and its compounds was also released in conjunction with these publications. There was a 60-day public comment period associated with each of these publications.
Information on cobalt and cobalt-containing substances was gathered from industry and interested stakeholders through three mandatory survey notices issued under section 71 of CEPA 1999. These surveys originated from the Challenge Initiative, Phase 1 of the DSL inventory update, and the Substance Grouping Initiative. Stakeholders were also invited to complete a voluntary questionnaire.
|Type of response||Number of submissions|
|Mandatory section 71 Notice||125|
|Declaration of stakeholder interest||45|
|Voluntary data submissions (for example, studies, additional information)||27|
Section 71 Notice (Mandatory Survey)
In June 2012, a Notice was issued in the Canada Gazette, Part I: Vol.146, No. 22 - June 2, 2012 (PDF version - 6365 K) under section 71 of the CEPA 1999. This Notice applied to a subset of substances which are part of the Cobalt-Containing Substance Grouping. Every person to whom this Notice applied was required to comply with the Notice no later than 5 p.m. EDT, October 2, 2012.
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