Overview
Linalool is a naturally occurring monoterpenoid alcohol found in the essential oils of numerous plants, including lavender, coriander, and citrus fruits. It is a key component in the fragrance and flavor industries due to its pleasant floral and citrus-like aroma. Chemically, it exists in two enantiomeric forms: (R)-(-)-linalool and (S)-(+)-linalool, each contributing slightly different scent profiles. Linalool is synthesized both naturally and industrially. Natural extraction is common from plants like lavender, while synthetic production is often preferred for cost efficiency and consistency. Its versatility makes it indispensable in perfumery, cosmetics, and food flavorings.
Physical and Chemical Properties
Linalool is a colorless liquid at room temperature with a characteristic floral and citrus scent. It has a relatively low boiling point (198-200°C) and is highly volatile, making it ideal for use in perfumes and air fresheners. Its molecular structure includes a hydroxyl group, which contributes to its solubility in alcohols and ethers but limited solubility in water. The compound is flammable and should be stored away from ignition sources. Its density ranges between 0.858-0.868 g/cm³, and it exhibits optical activity due to its chiral centers. These properties are critical for its applications in formulations where stability and evaporation rates are considerations.
Main Applications
Linalool is predominantly used in the fragrance industry, where it serves as a base note in perfumes, soaps, and detergents. Its floral and citrus notes make it a popular choice for creating fresh, clean scents. In cosmetics, it acts as a fragrance additive and a mild antiseptic. In the food industry, linalool is employed as a flavoring agent, particularly in citrus-flavored products and herbal teas. It is also studied for its potential therapeutic effects, such as anti-anxiety and sedative properties, though these applications require further clinical validation. Industrial uses include its role as a precursor in the synthesis of vitamin E.
Safety and Storage
While linalool is generally regarded as safe for use in cosmetics and food, it can cause skin irritation or allergic reactions in sensitive individuals. Proper handling includes wearing gloves and ensuring adequate ventilation in workspaces. It is classified as flammable, necessitating storage in cool, dry areas away from direct sunlight and heat sources. Bulk storage should use containers made of stainless steel or glass to prevent contamination. Suppliers often provide material safety data sheets (MSDS) detailing handling precautions, first-aid measures, and disposal guidelines to ensure compliance with occupational safety standards.
B2B Procurement Guide
When procuring linalool, B2B buyers should prioritize suppliers with certifications like ISO or GMP to ensure product quality and consistency. Key specifications to verify include purity (typically 95-99%), enantiomeric ratio (if applicable), and absence of contaminants such as heavy metals. Pricing varies based on quantity, purity, and sourcing method (natural vs. synthetic). Buyers should request samples for quality testing and confirm logistical details, including packaging options (e.g., drums, IBCs) and lead times. Long-term contracts may offer cost advantages, especially for large-scale industrial users.
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