Acyclic, Monocyclic, and Bicyclic Monoterpenes Group

Topics

These substances were identified for action under the Chemicals Management Plan (CMP). The screening assessment focuses on 15 substances, referred to collectively under the CMP as the Acyclic, Monocyclic, and Bicyclic Monoterpenes Group, which are a part of the larger Terpenes and Terpenoids Group.

Summary of publications
Timelines
Information gathering
- Section 71 CMP 2026 – Phase 1
Background

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
Acyclic, Monocyclic, and Bicyclic Monoterpenes Group	8015-77-8^{Table 1 footnote a},^{Table 1 footnote b}	Bois de rose oil	Oils, bois de rose	HTML	None	Does not meet	None planned at this time
	8014-19-5^{Table 1 footnote a},^{Table 1 footnote b}	Palmarosa oil	Oils, palmarosa
	8000-46-2^{Table 1 footnote a},^{Table 1 footnote b}	Geranium oil	Oils, geranium
	8008-52-4^{Table 1 footnote a}	Coriander oil	Oils, coriander
	8007-01-0^{Table 1 footnote a}	Rose oil	Oils, rose		HTML	Meets one or more of the criteria	Refer to risk management scope
	8007-02-1^{Table 1 footnote a}	Lemongrass oil	Oils, lemongrass		None	Does not meet	None planned at this time
	1113-21-9	Geranyllinalool	1,6,10,14-Hexadecatetraen-3-ol, 3,7,11,15-tetramethyl-, (E,E)-		None	Does not meet	None planned at this time
	8008-31-9^{Table 1 footnote a},^{Table 1 footnote b}	Mandarin oil	Oils, mandarin		HTML	Meets one or more of the criteria	Refer to risk management scope
	8016-85-1^{Table 1 footnote a},^{Table 1 footnote b}	Tangerine oil	Oils, tangerine		HTML	Meets one or more of the criteria	Refer to risk management scope
	8008-57-9^{Table 1 footnote a}	Sweet orange oil	Oils, orange, sweet		None	Does not meet	None planned at this time
	80-56-8	Alpha-pinene	Bicyclo[3.1.1]hept-2-ene, 2,6,6-trimethyl-		None	Does not meet	None planned at this time
	8006-64-2^{Table 1 footnote a}	Turpentine oil	Turpentine, oil		HTML	Meets one or more of the criteria	Refer to risk management scope
	9005-90-7^{Table 1 footnote a},^{Table 1 footnote b}	Turpentine	Turpentine		HTML	Meets one or more of the criteria	Refer to risk management scope
	8021-28-1^{Table 1 footnote a},^{Table 1 footnote b}	Fir oil	Oils, fir		None	Does not meet	None planned at this time
	8002-09-3^{Table 1 footnote a}	Pine oil	Oils, pine		None	Does not meet	None planned at this time
Table 1 footnote a This CAS RN is a UVCB (unknown or variable composition, complex reaction products, or biological materials). Return to first Table 1 footnote a referrer Table 1 footnote b This substance was not identified under subsection 73(1) of the Canadian Environmental Protection Act, 1999 (CEPA) but was included in this assessment as it was considered a priority on the basis of other human health concerns. Return to first Table 1 footnote b referrer

Timelines
Date	Activity
August 29, 2026	Publication in Canada Gazette, Part I, of a notice under section 71 of CEPA.
March 14, 2020	Publication and start of 60-day public comment period on the Draft Screening Assessment for Terpenes and Terpenoids Acyclic, Monocyclic, and Bicyclic Monoterpenes Group and the Risk Management Scope for Certain Terpenes and Terpenoids within the Acyclic, Monocyclic and Bicyclic Monoterpenes Group, Specifically: Rose Oil, Mandarin Oil, Tangerine Oil, Turpentine Oil, and Turpentine. The related notice was published in the Canada Gazette, Part I: Vol. 154, No. 11.

Information gathering

Section 71 CMP 2026 – Phase 1

In August 2026, a notice was published in the Canada Gazette, Part I: Vol. 160, No. 35 – August 29, 2026, under section 71 of CEPA. This notice applies to one substance included in this substance grouping (CAS RN 80-56-8). More information is available on the information gathering with respect to certain substances under the CMP web page.

Background

The screening assessment focuses on 15 substances referred to as the Acyclic, Monocyclic, and Bicyclic Monoterpenes Group. These substances are a part of a larger group of 76 substances referred to collectively under the CMP as the Terpenes and Terpenoids Group.

Three of these 76 substances were subsequently determined to be of low concern to both human health and the environment through other approaches. The conclusion for CAS RN 25428-43-7 is provided in the Final Screening Assessment for the Rapid Screening of Substances with Limited General Population Exposure. Conclusions for CAS RNs 29350-73-0 and 68916-97-2 are provided in the Final Screening Assessment of Substances Identified as Being of Low Concern using the Ecological Risk Classification of Organic Substances and the Threshold of Toxicological Concern (TTC)-based Approach for Certain Substances.

Sixteen of these 76 substances (CAS RNs 495-62-5, 8001-61-4, 8007-08-7, 17627-44-0, 65113-99-7, 107898-54-4, 87-44-5, 88-84-6, 3691-12-1, 4630-07-3, 68917-29-3, 489-86-1, 639-99-6, 22451-73-6, 8006-87-9, and 489-84-9) were assessed as a part of the Monocyclic and Bicyclic Sesquiterpenes Group.

Twelve of these 76 substances (CAS RNs 8006-78-8, 8016-88-4, 8022-96-6, 8024-43-9, 8024-08-6, 80-54-6, 91-51-0, 37677-14-8, 52474-60-9, 52475-86-2, 65405-84-7 and 66327-54-6) were assessed as a part of the Phenylpropanoids and Aldehydes Group.

Fourteen of these 76 substances (CAS RNs 8013-10-3, 8023-75-4, 70788-30-6, 84961-67-1, 90045-36-6, 3738-00-9, 8016-37-9, 164288-52-2, 8022-56-8, 8008-93-3, 3407-42-9, 66068-84-6, 68877-29-2 and 70955-71-4) were assessed as a part of the Fourteen Terpene and Terpenoid Substances Group.

Fourteen of these 76 substances (CAS RNs 469-61-4, 470-40-6, 489-40-7, 514-51-2, 546-28-1, 8000-27-9, 68608-32-2, 68990-83-0, 59056-62-1, 471-3-4, 4572-09-2, 8031-03-6, 84082-54-2 and 90045-38-8) were assessed as a part of the Tricyclic Sesquiterpenes and Triterpenoids Group.

Two of these 76 substances (CAS RNs 117-98-6 and 68917-65-7) were originally included in the Tricyclic Sesquiterpenes and Triterpenoids Group but have been removed to be assessed in a separate assessment.

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2026-08-28

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