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methyl ionone terpenes
Methyl ionone terpenes are medium-strength woody odor compounds with citrus and violet nuances, mainly used for information and not for fragrances or flavors.
General Material Description
Methyl ionone terpenes are organic compounds classified as cyclization by-products involving methylated dodecatrienones. These substances typically exhibit a medium-strength woody odor, complemented by sweet, violet, citrus, and subtle orris notes. They belong to the terpene class, known for diverse aroma characteristics used in fragrance science. The preferred name methyl ionone terpenes and its synonym methylionone terpenes denote this group of chemical entities. Their molecular structures feature conjugated ketone functionalities and methyl substitutions, as reflected in the chemical identifiers and InChIKey FHCSRYPQNOFPJS-UHFFFAOYSA-N. Derived as by-products from specific terpene cyclization reactions, they are not extracted or produced for standard commercial fragrance or flavor applications. More chemical details can be referenced through PubChem. This compound appears as a low-solubility substance with particular affinity for alcohol solvents.
Occurrence, Applicability & Potential Uses
Methyl ionone terpenes do not occur prominently in natural essential oils or widely applied commercial flavor or fragrance products. Their primary relevance is in chemical information contexts and research disciplines studying terpene derivatives and aroma chemistry pathways. Although they possess odor notes that evoke citrus, lemon, orris, and violet, they are not used in consumer formulations. The IFRA (Global) standards explicitly prohibit this material's use in fragrances due to dermal sensitization concerns. Likewise, it is excluded from flavor usage lists. This exclusion positions methyl ionone terpenes as compounds of interest mainly for academic or regulatory reference rather than direct application.
Physico-Chemical Properties Summary
Methyl ionone terpenes have limited water solubility, approximately 0.0001525 mg/L at 25°C, signifying strong hydrophobic character consistent with terpene derivatives. Conversely, these compounds demonstrate good solubility in alcohol solvents, which is relevant in laboratory analysis or experimental formulation contexts. The chemical structure includes conjugated ketones and multiple double bonds, contributing to their moderate volatility and characteristic odor profile. Their physicochemical properties support stable scent attributes over an extended period, with a reported substantivity of 168 hours at 100% concentration, highlighting persistence in olfactive evaluations. These traits influence handling and solvent choices during research but preclude widespread formulation use.
FAQ
What are methyl ionone terpenes?
Methyl ionone terpenes are a group of cyclization by-products derived from specific methylated dodecatrienone compounds in terpene chemistry. Characterized by their woody odor with sweet violet, citrus, and orris nuances, they are identified chemically by CAS number 72968-25-3. These substances are not typical fragrance or flavor ingredients but have significance in research and chemical information contexts.
Where do methyl ionone terpenes occur and how are they used?
These compounds do not commonly occur in natural sources or commercial products. Instead, they arise as by-products in chemical processes involving terpene cyclization. Although they have distinctive odor notes associated with citrus and violet, their use is restricted due to safety concerns. Consequently, methyl ionone terpenes are used mainly for informational and research purposes, rather than in fragrance or flavor applications.
What regulations or safety standards apply to methyl ionone terpenes?
Methyl ionone terpenes are managed under the IFRA (Global) standard, which prohibits their use in fragrances because of potential dermal sensitization effects. They are also not authorized for flavor applications. Safety studies have not determined oral, dermal, or inhalation toxicity, and no hazard classifications according to OSHA HCS exist. Therefore, their regulatory status emphasizes restriction and avoidance in consumer product formulation.
US / EU / FDA / JECFA / FEMA / Scholar / Patents
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Other Information
| HMDB (The Human Metabolome Database): | Search |
| Export Tariff Code: | 2914.23.0000 |
General Material Information
| Preferred name | methyl ionone terpenes |
| Trivial Name | 4,6,10-Dodecatrien-3-one, 7,11-dimethyl-, cyclization products with 3,6,10-trimethyl-3,5,9-undecatrien-2-one, by-products from |
| CAS Number | 72968-25-3 |
| ECHA Number | 277-131-7 |
| FDA UNII | Search |
| Synonyms |
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Suppliers
| Berjé |
PhysChem Properties
| Material listed in food chemical codex | No |
| Solubility | |
| alcohol | Yes |
| water, 0.0001525 mg/L @ 25 °C (est) | Yes |
Organoleptic Properties
| Odor Type: Woody | |
| sweet, woody, violet, citrus | |
| Odor strength | medium |
| Substantivity | 168 hour(s) at 100.00 % |
| General comment | At 100.00 %. sweet woody violet citrus |
Safety Information
Safety information
| Hazards identification | |
| Classification of the substance or mixture | |
| GHS Classification in accordance with 29 CFR 1910 (OSHA HCS) | |
| None found. | |
| GHS Label elements, including precautionary statements | |
| Pictogram | |
| Hazard statement(s) | |
| None found. | |
| Precautionary statement(s) | |
| None found. | |
| Oral/Parenteral Toxicity: | |
| Not determined | |
| Dermal Toxicity: | |
| Not determined | |
| Inhalation Toxicity: | |
| Not determined | |
Safety in use information
| Category: | |||
| information only not used for fragrances or flavors | |||
| IFRA Critical Effect: | |||
| Dermal sensitization | |||
| View the IFRA Standard | |||
| Recommendation for methyl ionone terpenes usage levels up to: | |||
| PROHIBITED: Should not be used as a fragrance ingredient. | |||
| Recommendation for methyl ionone terpenes flavor usage levels up to: | |||
| not for flavor use. | |||
Safety references
| EPI System: View |
| AIDS Citations:Search |
| Cancer Citations:Search |
| Toxicology Citations:Search |
| EPA Substance Registry Services (TSCA):72968-25-3 |
| EPA ACToR:Toxicology Data |
| EPA Substance Registry Services (SRS):Registry |
| National Institute of Allergy and Infectious Diseases:Data |
| Chemidplus:0072968253 |