Overview
trans-β-Farnesene is a naturally occurring sesquiterpene hydrocarbon classified as an acyclic terpene. It is notably present in the essential oils of plants such as chamomile, hops, and citrus peels, contributing to their characteristic aromas. Industrially, it is synthesized for applications ranging from fragrances to agrochemicals due to its dual role as a flavoring agent and a biological signal compound. In nature, trans-β-Farnesene serves as an alarm pheromone for aphids, triggering dispersal behavior upon release. This property has been leveraged in sustainable agriculture to develop eco-friendly pest management solutions. The compound’s low toxicity and biodegradability further enhance its appeal for green chemistry applications.
Physical and Chemical Properties
trans-β-Farnesene is a volatile liquid with a fresh, green, and slightly citrusy odor, making it a popular ingredient in perfumery. Its molecular structure consists of three double bonds, with the trans configuration at the central bond contributing to its stability and distinct properties. The compound’s insolubility in water and solubility in organic solvents like ethanol align with its use in oil-based formulations. With a boiling point of 124–126 °C under reduced pressure, it is relatively heat-sensitive, requiring careful handling during distillation or extraction. Its density (0.84–0.86 g/cm³) is typical for sesquiterpenes, and its flammability necessitates precautions during storage and transport.
Main Applications
The primary use of trans-β-Farnesene lies in the fragrance and flavor industry, where it imparts fresh, herbal notes to cosmetics, soaps, and food products. Its role as an aphid pheromone has spurred interest in agriculture, with formulations designed to disrupt pest behavior and reduce reliance on synthetic insecticides. Emerging applications include biofuel research, where its hydrocarbon structure is explored as a precursor for renewable diesel alternatives. Additionally, it is studied for potential antimicrobial and anti-inflammatory properties, though these uses remain experimental.
Safety and Storage
As a flammable liquid, trans-β-Farnesene must be stored in tightly sealed containers away from heat and open flames. It should be kept in a cool, dry environment with adequate ventilation to prevent vapor accumulation. Personal protective equipment (gloves, goggles) is recommended during handling to avoid skin or eye irritation. Regulatory compliance varies by region; in the EU, it falls under REACH, while the US FDA approves its use in food-grade applications at specified purity levels. Disposal should follow local hazardous waste guidelines to minimize environmental impact.
B2B Procurement Guide
When sourcing trans-β-Farnesene, prioritize suppliers who provide detailed Certificates of Analysis (CoA) confirming purity (typically 90–99%) and the absence of contaminants like heavy metals. Bulk buyers should negotiate contracts based on volume discounts, with prices ranging from $50–$200/kg depending on purity and sourcing method (natural vs. synthetic). For agrochemical or fragrance applications, ensure the supplier complies with industry-specific standards (e.g., IFRA for fragrances, EPA for pesticides). Sample testing is advisable to verify consistency in aroma profile or biological activity before large-scale procurement.
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