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Certain selenium-containing substances are among those identified as priorities for action for the second phase of the Chemicals Management Plan (CMP). The selection of these selenium-containing substances for action is based on the categorization process completed in 2006.
Some of these substances (CAS RNs 3425-46-5, 7782-49-2, 7783-07-5 and 144507-49-3) were not identified under subsection 73(1) of the Canadian Environmental Protection Act, 1999 (CEPA 1999) but were included as part of the moiety-based assessment.
|CAS RN||Chemical Substance||Draft Screening Assessment||Proposed Risk Management Scope|
|1306-24-7||Cadmium selenide (CdSe)||HTML||HTML|
|3425-46-5||Selenocyanic acid, potassium salt|
|7446-08-4||Selenium oxide (SeO2)|
|7488-56-4||Selenium sulfide (SeS2)|
|7783-07-5||Hydrogen selenide (H2Se)|
|10102-18-8||Selenious acid, disodium salt|
|10214-40-1||Selenious acid, copper(2++) salt (1:1)|
|12002-86-7||Silver selenide (AgSe)|
|12069-00-0||Lead selenide (PbSe)|
|12137-76-7||Palladium selenide (PdSe)|
|12214-12-9||Cadmium selenide sulfide (Cd2SeS)|
|12626-36-7||Cadmium selenide sulfide (Cd(Se,S))|
|12656-57-4||C.I. Pigment Orange 20|
|13410-01-0||Selenic acid, disodium salt|
|20405-64-5||Copper selenide (Cu2Se)|
|58339-34-7||C.I. Pigment Red 108|
|67711-98-2||Slags, dore furnace|
|69029-73-8||Leach residues, tellurium|
|144507-49-3||Slimes and Sludges, sulfuric acid manuf., sulfur dioxide cooling tower, selenium-contg.|
|152923-45-0||Slimes and Sludges, mercury conc. roasting off gas condensate|
|Summer 2016||Anticipated Publication in Canada Gazette of final assessment decisions under paragraphs 68(b) and (c) and subsection 77(6) of CEPA 1999, release of Government's proposed risk management approach document and start of 60-day public comment period on the proposed risk management approach document.|
|September 16, 2015||Deadline for submission of public comments on the draft screening assessment and the proposed risk management scope document.|
|July 18, 2015||Publication in Canada Gazette and start of 60-day public comment period on
|December 1, 2013||Deadline for submission of any voluntary information by interested stakeholders.|
|October 1, 2013||Deadline for submission of information for the section 71 Notice (without an extension).|
|May 25, 2013||Release of the section 71 Notice with respect to certain selenium-containing substances and the accompanying technical documents.|
If needed, information gathering tools could be used to inform potential risk management actions.
In July 2015, the draft screening assessment and the risk management scope were released and the related Notice was published in the Canada Gazette, Part 1: Vol. 149, No. 29 - July 18, 2015 (PDF Version - 1,301 K).
The draft screening assessment focuses on the selenium moiety (selenium and its compounds), and therefore includes substances containing selenium in all oxidation states (selenite, selenate, elemental, selenide), organic selenium, and all forms of selenium found in the environment. The selenium assessment encompasses all twenty-nine selenium-containing substances on the Domestic Substances List (DSL) including those that met categorization criteria.
The draft screening assessment has proposed to conclude that "selenium and its compounds", which includes, but is not limited to, the 29 selenium-containing substances on the DSL, are harmful to the environment and human health and therefore meet the criteria under paragraph 64(a) and 64(c) of CEPA 1999.
It is proposed that selenium and its compounds be recommended for addition to the List of Toxic Substances in Schedule 1 to CEPA 1999 based on environmental and human health concerns. A risk management scope document was also released in conjunction with this publication. There is a 60-day public comment period associated with these publications.
|Type of Response||Number of Submissions|
|Mandatory section 71 Notice||5|
|Declaration of Stakeholder Interest||26|
|Voluntary Data Submissions (for example, studies, additional information)||11|
In May 2013, a Notice was issued in the Canada Gazette, Part I: Vol. 147, No. 22 - May 25, 2013 (PDF Version - 2307 K) under section 71 of CEPA 1999. This Notice applied to a subset of 23 substances which are part of the Selenium-containing Substance Grouping. Every person to whom this Notice applied was required to comply with the Notice no later than 5:00 p.m. EDT, October 1, 2013.