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privetone
Privetone is a green, floral fragrance compound known chemically as 1-(2-methoxyethoxy)-4-methylbenzene, used mainly in perfumery for its fresh, foliage-like scent.
General Material Description
Privetone, also known as 1-(2-methoxyethoxy)-4-methylbenzene, is an aromatic chemical belonging to the class of benzene derivatives substituted with methoxyethoxy and methyl groups. This compound presents as a liquid with a molecular formula of C10H14O2 and a molecular weight of approximately 166.22 g/mol. It is characterized by a medium-strength green odor reminiscent of fresh privet stems, with additional floral and foliage nuances. Privetone is widely recognized in perfumery and fragrance formulations under synonyms such as emeressence 1172 privetone and p-(2-methoxyethoxy)toluene. The compound is typically synthesized for use as a fragrance agent and is not naturally abundant but derived through chemical processes documented in sources such as PubChem. Its green and herbal aroma qualities make it a versatile ingredient in the fragrance industry.
Occurrence, Applicability & Potential Uses
Privetone is primarily utilized as a fragrance agent for achieving green, floral, and herbal scent profiles. It produces odor effects similar to foliage and lily of the valley, also notably resembling privet leaf notes. In perfumery, this compound enhances the freshness and natural character of compositions that require a medium-lasting green effect with a substantivity of about 40 hours at full concentration. Privetone’s usage recommendations are outlined by IFRA (Global), the international fragrance regulatory body, which suggests maximum concentrations of up to 10% in fragrance concentrates. Besides use in perfumes and colognes, it finds applications in fine fragrances, providing leaf and floral nuances, supporting contemporary green fragrance trends within personal and household care products.
Physico-Chemical Properties Summary
Privetone is a moderately volatile liquid with a boiling point range between 242 and 243°C at standard atmospheric pressure. The compound’s vapor pressure is low (0.052 mmHg at 25°C), indicating limited evaporation under ambient conditions, which contributes to its substantivity in fragrance formulations. It exhibits a specific gravity close to 1.009 at 25°C and an estimated log P of 2.306, reflecting moderate lipophilicity and solubility in organic solvents such as alcohol and mineral oil above 15%. Water solubility estimates show partial solubility around 634.5 mg/L at 25°C but generally limited dissolution in pure water. Privetone’s flash point is approximately 255°F (about 124°C), representing reasonable stability in handling and storage. It remains stable when exposed to alkali cleaners at low concentrations and chlorine bleach, facilitating use in various product matrices without significant degradation.
FAQ
What is privetone and what are its primary characteristics?
Privetone is a fragrance compound chemically identified as 1-(2-methoxyethoxy)-4-methylbenzene with molecular formula C10H14O2. It is known for its green, floral, and herbal odor profile, reminiscent of fresh privet foliage and lily of the valley. The compound is used primarily as a fragrance agent in perfumery to impart fresh and foliage-like scent nuances, with medium odor strength and lasting substantivity.
How is privetone typically used and what are its functional applications?
Privetone is widely applied in fragrance compositions where a natural green and floral character is desirable. It contributes leaf-like and herbal nuances, enhancing freshness in perfumes, colognes, and personal care products. Usage levels are regulated to maintain safety and efficacy, with IFRA (Global) permitting up to 10% concentration in fragrance concentrates. Its physical properties such as moderate volatility and good solubility in alcohol facilitate formulation across various product types.
What safety and regulatory guidelines apply to privetone’s use?
Privetone is classified with no significant hazards under OSHA HCS (US) regulations and lacks GHS hazard classifications. Dermal toxicity studies indicate an LD50 value above 2000 mg/kg in rabbits, suggesting low acute toxicity. The International Fragrance Association (IFRA) provides usage guidelines recommending privetone concentration not exceed 10% in fragrance formulations. It is not authorized for flavor use. Users should consult relevant safety data and assessments such as those from RIFM and follow standard handling precautions.
US / EU / FDA / JECFA / FEMA / Scholar / Patents
| Google Scholar | Start search |
| Google Books | Start search |
| Google Patents | Start search |
| Perfumer & Flavorists | Start search |
| EU Patents | Start search |
| PubMeb | Start search |
| NCBI | Start search |
Other Information
| (IUPAC): | Atomic Weights of the Elements 2011 (pdf) |
| Videos: | The Periodic Table of Videos |
| tgsc: | Atomic Weights use for this web site |
| (IUPAC): | Periodic Table of the Elements |
| HMDB (The Human Metabolome Database): | Search |
| ChemSpider: | View |
General Material Information
| Preferred name | privetone |
| Trivial Name | 1-(2-Methoxyethoxy)-4-methylbenzene |
| Short Description | 1172 privetone |
| Formula | C10 H14 O2 |
| CAS Number | 97375-48-9 |
| FDA UNII | Search |
| Nikkaji Number | J453.610J |
| NMR Predictor | External link |
| Synonyms |
|
PhysChem Properties
| Material listed in food chemical codex | No |
| Molecular weight | 166.21998596191 |
| Specific gravity | @ 25 °C |
| Pounds per Gallon | 8.394 to 8.398 |
| Boiling Point | 242 to 243°C @ 760 mm Hg |
| Vapor Pressure | 0.052 mmHg @ 25 °C |
| Flash Point TCC Value | 123.89 °C TCC |
| logP (o/w) | 2.306 est |
| Solubility | |
| alcohol | Yes |
| mineral oil, > 15% | Yes |
| water, 634.5 mg/L @ 25 °C (est) | Yes |
| water | No |
| Stability | |
| alkali cleaners .1% | Unspecified |
| chlorine bleach .1% | Unspecified |
Organoleptic Properties
| Odor Type: Green | |
| fresh, green, privet, cortex, earthy, nasturtium, phenolic, melon rind, animal | |
| Odor strength | medium |
| Substantivity | 40 hour(s) at 100.00 % |
| Luebke, William tgsc, (1986) | At 100.00 %. fresh green privet stem |
| Flavor Type: Green | |
| green, nasturtium, wasabi, melon rind, watercress, truffle, asparagus | |
| Luebke, William tgsc, (1986) | Green nasturtium wasabi melon rind watercress truffle asparagus |
Potential Uses
| Applications | |
| Odor purposes | Floral , Foliage , Green , Herbal , Lily of the valley , Privet |
| Other purposes | Leaf |
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: | |
| skin-rabbit LD50 > 2000 mg/kg Luebke, William tgsc, (1986) | |
| Inhalation Toxicity: | |
| Not determined | |
Safety in use information
| Category: | |||
| fragrance agents | |||
| RIFM Fragrance Material Safety Assessment: Search | |||
| IFRA Code of Practice Notification of the 49th Amendment to the IFRA Code of Practice | |||
| Recommendation for privetone usage levels up to: | |||
| 10.0000 % in the fragrance concentrate. | |||
| Recommendation for privetone 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):97375-48-9 |
| EPA ACToR:Toxicology Data |
| EPA Substance Registry Services (SRS):Registry |
| Laboratory Chemical Safety Summary :3086443 |
| National Institute of Allergy and Infectious Diseases:Data |
| WGK Germany:2 |
| 1-(2-methoxyethoxy)-4-methylbenzene |
| Chemidplus:0097375489 |