Thallium and its compounds

Information sheet

These substances were identified for action under the Chemicals Management Plan (CMP). The assessment focused 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 to 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
Substance group CAS RN Common name DSL or R-ICL name Public comments on the draft screening assessment Final assessment Proposed risk management approach Conclusion on section 64 criteria Follow-up activities
Thallium and its compounds 7440-28-0 Thallium Thallium HTML HTML HTML Meets one or more of the criteria Refer to proposed risk management approach
563-68-8 Thallium(I) acetate Acetic acid, thallium(1+) salt
7791-12-0 Thallium chloride Thallium chloride
10031-59-1 Table 1 Footnote a Thallium(I) sulfate Sulfuric acid, thallium(1+) salt (1:?)
55172-29-7 Table 1 Footnote b 201TlCl Thallium chloride (201TlCl)
Table 1 Footnote a

This substance was removed from the Revised In Commerce List (R-ICL) in 2022 as it was determined to not have commercial activity in Canada for use in products under the Food and Drugs Act.

Table 1 Return to footnote a referrer

Table 1 Footnote b

This substance is on the R-ICL.

Table 1 Return to footnote b referrer

Date Activity
March 30, 2024 Publication of the final assessment. The proposed risk management approach was also published for a 60-day public comment period. The related notice was published in the Canada Gazette, Part I: Vol. 158, No. 13 .
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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