Phthalate substance grouping
Certain phthalate substances are among those identified as priorities for action for the second phase of the Chemicals Management Plan (CMP). The selection of the phthalate substances for action was based on the categorization process completed in 2006, and on information received as part of the first phase of the CMP. Fourteen phthalate substances were included in this substance grouping, and were selected for a number of different reasons: some have been identified as potentially being associated with reproductive and developmental effects; some have a wide range of consumer applications; some are associated with potential ecological effects of concern; and some have been identified as priorities internationally.
Due to the possibility that some phthalate substances may have common health effects of concern, the potential for cumulative risk from combined exposure to these substances was addressed by expanding the scope of the Phthalates Grouping from the original 14 phthalates to include an additional 14 phthalates, including three previously assessed under the Canadian Environmental Protection Act, 1999 (CEPA 1999) (dibutyl phthalate [DBP], butyl benzyl phthalate [BBP], and diethyl hexyl phthalates [DEHP]). Other phthalates on the Domestic Substances List, or that have been notified for use in Canada under the New Substances Notification Regulations (Chemicals and Polymers) may also be considered in the cumulative risk assessment.
- State of the Science Reports and Proposed Approach for Cumulative Risk Assessment of Phthalates
- Summary of Publications
- Multi-stakeholder Technical Workshop
- Information Gathering
State of the Science Reports and Proposed Approach for Cumulative Risk Assessment of Phthalates
In August 2015, four state of the science reports, which collectively considered 14 substances, and a Proposed Approach for Cumulative Risk Assessment of Phthalates were released for a 60-day public comment period ending September 30, 2015.
Summary of Publications
|Subgrouping||CAS RN||Chemical Substance||State of the Science Report||Proposed Approach for Cumulative Risk Assessment of Phthalates|
|DINPTable 1 footnote 1||28553-12-0
|Summer 2017||Anticipated publication in Canada Gazette of final screening assessment decisions under subsection 77(6) of CEPA 1999, including an assessment of cumulative risk for certain substances.|
|April 1, 2017||Publication in Canada Gazette of Notice under section 71 of CEPA 1999. The Notice applies to 50 substances that are toxic as defined under section 64 of CEPA 1999. One substance in this grouping (DEHP) is included in this Notice.|
|Summer 2016||Anticipated release of the draft screening assessment, in Canada Gazette including an assessment of cumulative risk for certain substances, and start of 60-day public comment period.|
|August 1, 2015||Release of the state of the science report and the proposed cumulative risk assessment approach, in Canada Gazette, and start of 60-day public comment period.|
|January 13, 2014||Deadline for submission of any voluntary information by interested stakeholders.|
|November 13, 2013||Deadline for submission of information for the section 71 Notice (without an extension).|
|July 13, 2013||Release of the section 71 Notice with respect to certain phthalate substances and the accompanying technical documents.|
If needed, other information gathering tools could be used to inform potential risk management actions.
Multi-stakeholder Technical Workshop
In March 2014, Environment Canada and Health Canada hosted a multi-stakeholder technical workshop in Ottawa. The primary objective of this workshop was to obtain input on:
The workshop format encouraged input from stakeholders, and two key observations from participants were:
Summary Report on 2014 Phthalates Stakeholder Technical Workshop
Following discussions at the stakeholder technical workshop, a technical category approach document was developed and refined by Health Canada that outlined its approach, using chemical categories and read-across data to address data gaps for effects on the developing male reproductive system. The purpose of this exercise was to develop appropriate subgroups for identification of common health effects of concern (for example, reproductive and developmental effects).
Approach for Using Chemical Categories and Read-Across to Address Data Gaps for Effects on the Developing Male Reproductive System
Further to feedback received during the workshop and based on consideration of the complex scientific issues, strong stakeholder interest in providing scientific input, and recent international developments on phthalates, the original risk assessment timelines for the Phthalates Grouping were adjusted by one year. In August 2015, Environment Canada and Health Canada published four state of the science reports and the Proposed Cumulative Risk Assessment Approach document for a 60-day public comment period. This additional activity was undertaken to solicit input on the science prior to publication of a draft screening assessment, including an assessment of cumulative risk, as appropriate, in summer 2016.
- Approach for Using Chemical Categories and Read-Across to Address Data Gaps for Effects on the Developing Male Reproductive System
2017 Mandatory Survey - Section 71 Notice
In April 2017, a Notice was issued in the Canada Gazette, Part I: Vol. 151, No. 13 – April 1, 2017 (PDF Version 1,997 K) under section 71 of CEPA 1999. The Notice applies to 50 substances that are toxic as defined under section 64 of CEPA 1999. One phthalate substance, DEHP (CAS RN 117-81-7), is included in this Notice. More information, including how to submit a response, is available on the Certain Substances Requiring Information for Risk Management webpage.
2013 Mandatory Survey - Section 71 Notice (Mandatory Survey)
In July 2013, a Notice was issued in the Canada Gazette, Part I: Vol.147, No. 28 - July 13, 2013 (PDF Version - 2,257 K) under section 71 of the CEPA 1999.
Submissions Received in Response to 2013 Mandatory Survey
|Type of Response||Approximate Number|
|Responses to mandatory section 71 Notice (responses were received relating to 27 substances in the grouping)||132|
|Requests for extension of the deadline for section 71 Notice responses granted||37|
|Expressions of "Stakeholder Interest" (responses were received relating to 32 substances in the grouping)||70|
|Other submissions (for example, studies, additional information) (submissions were received relating to five substances in the grouping)||12|
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