Boric Acid, its salts and precursors substance grouping
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Boron-containing substances are among those identified as priorities for action for the second phase of the Chemicals Management Plan (CMP). The selection of these boron-containing substances for action was based on the categorization process completed in 2006 and on the potential of the substances to release a common moiety of concern, boric acid.
- Summary of Publications
- Timelines
- Draft Screening Assessment and Risk Management Scope
- Submissions Received
- Background
Update April 2017:
The Government of Canada is reviewing public comments provided in response to publication of the draft screening assessment for boric acid, its salts and its precursors, published on July 23, 2016. Taking into consideration the complexity of this assessment, the number of public comments received, as well as the inclusion of boron measurements in Cycle 5 of the Canadian Health Measures Survey, the Government of Canada will be taking additional time to review this information prior to publishing the final screening assessment.
Summary of Publications
The current screening assessment focuses on boric acid, and therefore includes boric acid, its salts and its precursors, that is, boron-containing substances that release boric acid. Fourteen substances were identified as priorities for further action during categorization and are presented in the table below.
| CAS RN | Chemical Substance | Draft Screening Assessment | Proposed Risk Management Scope |
|---|---|---|---|
| 1303-96-4 | Borax (B4Na2O7.10H2O) | HTML | HTML |
| 1330-43-4 | Boron sodium oxide (B4Na2O7) | ||
| 1332-07-6 | Boric acid, zinc salt | ||
| 7632-04-4 | Perboric acid (HBO(O2)), sodium salt | ||
| 10043-35-3 | Boric acid (H3BO3) | ||
| 12007-60-2 | Boron lithium oxide (B4Li2O7) | ||
| 12007-89-5 | Ammonium boron oxide ((NH4)B5O8) | ||
| 12271-95-3 | Boron silver oxide (B4Ag2O7) | ||
| 12767-90-7 | Boron zinc oxide (B6Zn2O11) | ||
| 13453-69-5 | Boric acid (HBO2), lithium salt | ||
| 13814-96-5 | Borate(1-), tetrafluoro-, lead(2+) (2:1) | ||
| 13826-83-0 | Borate(1-), tetrafluoro-, ammonium | ||
| 14486-19-2 | Borate(1-), tetrafluoro-, cadmium (2:1) | ||
| 68457-13-6 | Cobalt, borate neodecanoate complexes |
| Date | Activity |
|---|---|
| July 23, 2016 | Publication in Canada Gazette and start of 60-day public comment period on (a) the draft screening assessment and (b) the risk management scope document on boron-containing substances. |
| April 31, 2013 | Deadline for submission of any voluntary information by interested stakeholders for the assessment of the Boron-Containing Substance Grouping under Phase 2 of the CMP. |
| July 23, 2012 | Early stakeholder engagement webinar: Launch of the Boron-Containing Substance Grouping under the second phase of the CMP. |
| March 30, 2010 | Deadline for submission of information for the section 71 Notice with respect to Phase 1 of the Domestic Substances List Inventory Update (without an extension). |
| October 3, 2009 | Release of the section 71 Notice for Phase 1 of the Domestic Substances List Inventory Update. |
Draft Screening Assessment and Risk Management Scope
In July 2016, the draft screening assessment was released and the related Notice was published in the Canada Gazette, Part I: Vol. 150, No. 30 - July 23, 2016 (PDF Version - 244 K). Fourteen substances met categorization criteria under subsection 73(1) of the Canadian Environmental Protection Act, 1999 (CEPA 1999) and were identified as priorities for action. Given that the screening assessment focuses on a common moiety of concern (boric acid), all boron-containing substances, other than polymers, were assessed for their potential to be precursors of boric acid, including those on the Domestic Substances List (DSL). The draft screening assessment proposes to conclude that boric acid, its salts and its precursors are harmful to the environment as set out in section 64 (a) of CEPA 1999. It also proposes to conclude that boric acid, its salts and its precursors are harmful to human health as set out in section 64 (c) of CEPA 1999. 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.
Submissions Received
Information on boron-containing substances was gathered from industry and interested stakeholders through Phase 1 of the Domestic Substances List Inventory Update Notice issued under Section 71 of CEPA 1999. Information was also gathered through voluntary approaches.
| Type of Response | Number of Submissions |
|---|---|
| Mandatory section 71 Notice | 92 |
| Declaration of Stakeholder Interest | 31 |
| Voluntary Data Submissions (for example, studies, additional information) | 29 |
Background
Section 71 Notice (Mandatory Survey)
In October 2009, a Notice was issued in the Canada Gazette, Part I: Vol. 143, No. 40 - October 3, 2009 (PDF Version - 1,057 K) under section 71 of CEPA 1999. This Notice applies to a subset of substances which are part of Phase 1 of the Domestic Substances List Inventory Update. Every person to whom this Notice applied was required to comply with the Notice no later than 5 p.m. EDT, March 30, 2010.
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