peony alcohol

Peony alcohol, chemically designated as 2-(2-methylphenyl)ethanol and listed under CAS number 19819-98-8, is an aromatic alcohol commonly used in fragrance compositions. This compound presents as a liquid with a molecular formula of C₉H₁₂O and molecular weight of 136.19 g/mol. Its scent profile is characterized by natural floral notes reminiscent of peony, rose, mimosa, and green earthy undertones. Known also under multiple synonyms like 2-methylbenzene ethanol and ortho-methyl 2-phenethyl alcohol, peony alcohol is primarily sourced and synthesized for use in perfuming agents. More information on its detailed chemical characteristics is accessible via controlled-vocabulary databases such as PubChem. It occurs as a stable compound under standard storage conditions and is typically incorporated in complex fragrance blends.

Peony alcohol is not directly found as a significant natural metabolite but is an established synthetic fragrance ingredient derived through chemical synthesis methods. It is applied extensively in the fragrance industry to provide floral complexity, contributing aldehydic, peony, rose, and mimosa nuances to diverse scent formulations. In perfumery, it serves as a medium-strength odorant with high substantivity, maintaining scent presence for extended periods. Its uses extend to creating bouquet and floral accords resembling azalea, cherry blossom, and dahlia notes. Recognized under the IFRA (Global) Code of Practice, peony alcohol conforms to recommended maximum usage levels up to 5% in fragrance concentrates. Although not authorized for flavoring purposes, its olfactory qualities make it valuable for fragrance agents and cosmetic perfuming applications.

Peony alcohol exhibits physical properties that influence its practical use in formulations. It has a melting point range from 1 to 2 °C and boils between 243 and 244 °C at atmospheric pressure (760 mm Hg), indicating moderate volatility suitable for sustained aromatic release. The compound possesses a logP value of approximately 2.11, reflecting moderate hydrophobicity and balanced solubility characteristics. It is soluble in alcohol and has an estimated water solubility of about 4399 mg/L at 25 °C, which aids its integration into various solvent systems. Vapor pressure is low at 0.017 mmHg at 25 °C, contributing to its stability and longevity in fragrance compositions. Its flash point is measured at 199 °F (about 93 °C), indicating safe handling under typical storage conditions. Proper storage in cool, dry, and tightly sealed containers protected from heat and light extends its shelf life beyond 24 months. Stability tests show compatibility with diverse formulations including shampoos, soaps, detergents, and fabric softeners.

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Safety information

Preferred SDS: View
European information :
Most important hazard(s):
Xi - Irritant
R 36/38 - Irritating to skin and eyes. S 02 - Keep out of the reach of children. S 24/25 - Avoid contact with skin and eyes. S 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S 37/39 - Wear suitable gloves and eye/face protection.
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:
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 peony alcohol usage levels up to:
	5.0000 % in the fragrance concentrate.
Recommendation for peony alcohol 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):19819-98-8

EPA ACToR:Toxicology Data

EPA Substance Registry Services (SRS):Registry

Laboratory Chemical Safety Summary :88267

National Institute of Allergy and Infectious Diseases:Data

WGK Germany:3

2-(2-methylphenyl)ethanol

Chemidplus:0019819988