Thallium and its compounds
These substances were identified for action under the
Chemicals Management Plan (CMP). This screening assessment focuses on the thallium moiety and therefore considers all thallium-containing substances, that may release thallium as well as thallium in its elemental form, and thallium released in the environment in dissolved, solid or particulate forms. This includes 5 thallium-containing substances identified as priorities for assessment, which are listed in the table below.
Summary of publications
CAS RN Common name
DSL or R-ICL name Draft screening assessment
Risk management scope
Proposed conclusion on
section 64 criteria Follow-up activities
Thallium and its compounds 7440-28-0
Table 1 footnote a Thallium
HTML Meets one or more of the criteria
Refer to risk management scope
Acetic acid, thallium(1++) salt
Table 1 footnote b Thallium(I) sulfate
Sulfuric acid, thallium(1+) salt (1:?)
Table 1 footnote b
201TlCl Thallium chloride (
Table 1 footnote a
This substance was not identified under subsection 73(1) of the
Canadian Environmental Protection Act, 1999 (CEPA 1999) but was included in this assessment as it is highly reactive when exposed to moisture in air and releases thallium ions under environmental conditions.
Return to Table 1 footnote a referrer Table 1 footnote b
This substance was not identified under subsection 73(1) of CEPA 1999 but was included in this assessment as it was identified for further consideration following prioritization of the Revised In Commerce List (R-ICL).
Return to b first Table 1 footnote referrer
Anticipated publication of the final screening assessment and proposed risk management approach.
September 19, 2020
Publication and start of 60-day public comment period on the draft screening assessment and risk management scope. The related notice was published in the
. Canada Gazette, Part I: Vol. 154, No. 38
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