Ketones Group

These substances were identified for action under the Chemicals Management Plan (CMP). The screening assessment focuses on 10 substances referred to collectively under the CMP as the Ketones Group.

• Summary of publications
• Timelines
• Information gathering
  • Section 71 CMP 2023

Summary of publications

Substance group	CAS RN	Common name	DSL name	Draft screening assessment	Risk management scope	Proposed conclusion on section 64 criteria	Follow-up activities
Ketones Group	78-93-3	Methyl ethyl ketone (MEK)	2-Butanone	HTML	HTML	Meets one or more of the criteria	Refer to risk management scope
	107-87-9	Methyl propyl ketone (MPK)	2-Pentanone		None	Does not meet	None planned at this time
	108-10-1	Methyl isobutyl ketone (MIBK)	4-Methyl-2-pentanone		HTML	Meets one or more of the criteria	Refer to risk management scope
	110-12-3	Methyl isoamyl ketone (MIAK)	2-Hexanone, 5-methyl		None	Does not meet	None planned at this time
	123-42-2	Diacetone alcohol (DAA)	4-Hydroxy-4-methyl-2-pentanone
	123-54-6Table 1 footnote a	2,4-Pentanedione (2,4-PD)	2,4-Pentanedione		HTML	Meets one or more of the criteria	Refer to risk management scope
	141-79-7	Mesityl oxide (MO)	4-Methyl-3-penten-2-one		None	Does not meet	None planned at this time
	431-03-8	Diacetyl	2,3-Butanedione
	513-86-0	Acetoin	2-Butanone, 3-hydroxy
	600-14-6Table 1 footnote a	2,3-Pentanedione (2,3-PD)	2,3-Pentanedione

Timelines

Date	Activity
June 2023	Anticipated publication of the Final Screening Assessment for the Ketones Group and the Proposed Risk Management Approach for Methyl Ethyl Ketone, Methyl Isobutyl Ketone, and 2,4-Pentanedione.
June 24, 2023	Publication in Canada Gazette, Part I, of a notice under section 71 of CEPA 1999.
January 19, 2019	Publication and start of 60-day public comment period on the Draft Screening Assessment for the Ketones Group and the Risk Management Scope for Methyl Ethyl Ketone, Methyl Isobutyl Ketone, and 2,4-Pentanedione. The related notice was published in the Canada Gazette, Part I: Vol. 153, No. 3.

Information gathering

Section 71 CMP 2023

In June 2023, a notice was published in the Canada Gazette, Part I: Vol. 157, No. 25 – June 24, 2023 under section 71 of CEPA 1999. This notice applies to MEK (CAS RN 78-93-3) and MIBK (CAS RN 108-10-1). More information is available on the Information gathering with respect to certain substances under the Chemicals Management Plan web page.