Overview
Methyl-2-ionone is a synthetic ketone widely valued in the fragrance industry for its violet-like scent. It belongs to the ionone family, which includes compounds derived from or resembling natural violet extracts. Due to its stability and pleasant aroma, it is a common ingredient in perfumes, soaps, and cosmetic products. Industrially, methyl-2-ionone is synthesized through aldol condensation, followed by cyclization. Its cost-effectiveness compared to natural violet extracts makes it a preferred choice for mass-produced fragrances and flavors. The compound is also used in food flavorings, though in strictly regulated quantities.
Physical and Chemical Properties
Methyl-2-ionone is a pale yellow to colorless liquid with a characteristic floral, woody odor. Its molecular structure includes a cyclohexenone ring, contributing to its stability and solubility in organic solvents like alcohols and oils. The compound is insoluble in water, which limits its use in aqueous formulations. Key physical properties include a density of 0.93-0.94 g/cm³ and a boiling point around 266-268°C. It exhibits low volatility, making it suitable for long-lasting fragrance applications. Chemically, it is stable under normal conditions but may degrade when exposed to strong oxidizers or prolonged UV light.
Main Applications
The primary use of methyl-2-ionone is in the fragrance industry, where it imparts a violet-like note to perfumes, colognes, and body care products. It is often blended with other aroma compounds to create complex floral or woody scents. In cosmetics, it serves as a fragrance enhancer in lotions, shampoos, and soaps. The flavor industry also utilizes methyl-2-ionone in trace amounts to replicate fruity or floral notes in candies, beverages, and baked goods. Due to regulatory constraints, food-grade purity (≥98%) is mandatory. Additionally, it finds niche applications in aromatherapy and household air fresheners.
Safety and Storage
Methyl-2-ionone is generally considered safe when used as directed, but industrial handling requires precautions. Prolonged skin contact or inhalation of concentrated vapors may cause irritation. Proper PPE, such as gloves and goggles, is recommended during large-scale processing. Storage conditions are critical to maintaining stability. The compound should be kept in tightly sealed containers, away from direct sunlight and heat sources. Compatibility with common packaging materials like HDPE and glass ensures long shelf life. Disposal must follow local regulations for organic compounds.
B2B Procurement Guide
When sourcing methyl-2-ionone, B2B buyers should prioritize suppliers with ISO or GMP certifications to ensure quality and consistency. Key specifications to verify include purity (typically ≥95%), CAS number (127-42-4), and absence of impurities like heavy metals. Bulk procurement often offers cost advantages, with prices ranging approximately $50-$100/kg depending on quantity and supplier. Request samples for organoleptic and GC-MS testing before large orders. Logistics considerations include temperature-controlled transport for sensitive batches and compliance with international fragrance association standards (IFRA).
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