Fifty-two substances with high hazard potential on the Domestic Substances List

Applying Significant New Activity provisions

View the Significant New Activity Publications under the Canadian Environmental Protection Act, 1999. Orders are subject to potential amendments under the Significant New Activity (SNAc) Review.

For additional guidance on submitting information required as part of SNAc notifications, please see the Guidelines for the Notification and Testing of New Substances: Chemicals and Polymers.

Varying the requirements under the Significant New Activity provisions

In February 2022, 2 notices of intent to amend the DSL to vary the requirements under the SNAc provisions for 42 substances and 9 substances respectively were published in the Canada Gazette, Part, I for a 60-day public comment period.

The proposed amendments are an outcome of the SNAc Review. The DSL amendments do not come into force until the final order is published in the Canada Gazette, Part II. Any current requirements under the SNAc provisions remain in effect until then.

In January 2017, a notice of intent to amend the DSL to vary the requirements under the SNAc provisions for phenoxymethyl oxirane, was published in the Canada Gazette, Part I: Vol. 151, No. 2 – January 14, 2017, for a 60-day public comment period. The proposed amendment is an outcome of the SNAc Review. The DSL amendment does not come into force until the final order is published in the Canada Gazette, Part II. Any current requirements under the SNAc provisions remain in effect until then.

Final screening assessment

In May 2013, the Final Screening Assessment for 52 Substances with High Hazard Potential on the Domestic Substances List was released and the related notice was published in the Canada Gazette, Part I: Vol. 147, No. 22 – May 25, 2013.

The final screening assessment concluded that these 52 substances do not meet any of the criteria of section 64 of CEPA 1999 because the likelihood of exposure to these substances in Canada resulting from commercial activity is low, and hence, the potential risks to human health or the environment are considered to be low. However, because of their hazardous properties, an order to amend the DSL was published to indicate that the SNAc provisions have been used so that any new activity in relation to these substances will give rise to a risk assessment. As a result of new information that was received after the publication of the draft screening assessment, thiophanate-methyl is no longer included in this assessment or the final order amending the DSL. Additional action may be taken on this substance at a later date following additional risk assessment.

Draft screening assessment

In July 2011, the Draft Screening Assessment for 53 Substances with High Hazard Potential on the Domestic Substances List was released and the related notice was published in the Canada Gazette, Part I: Vol. 145 No. 27 – July 2, 2011 for a 60-day public comment period.

The draft screening assessment proposed to conclude that 53 substances do not meet any of the criteria set out in section 64 of CEPA 1999.

Background

In 2006 and 2009, surveys were issued under section 71 of CEPA 1999 to update the DSL. The surveys revealed no reports of industrial activities (import or manufacture) above the reporting threshold for the 53 substances (15 substances covered in a survey released on March 4, 2006, and 38 substances covered in a survey released on October 3, 2009).

Since the publication of the draft screening assessment for 53 substances, 1 substance was removed following the receipt of additional information. The remaining 52 substances are deemed to be "not in commerce". Additional entry characterization was conducted to identify direct exposure potential to the general population in Canada. No information was found on current uses or releases of these substances in Canada.

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