Alpha Terpinene

Alpha Terpinene (CAS #99-86-5) is a naturally occurring terpene widely found in essential oils from plants such as conifers, citrus fruits, nutmeg, cardamom, and marjoram1235. It is recognized for its fresh, citrusy, and pine-like aroma, and offers a versatile profile for use across multiple industries.

Key Properties

• Chemical Formula: C₁₀H₁₆

• Molecular Weight: 136.23 g/mol

• Appearance: Clear, colorless liquid

• Odor: Refreshing, citrusy, pine-like, and slightly herbal345

• Boiling Point: ~168–174°C45

• Density: ~0.83–0.85 g/cm³ at 20°C45

• Purity: Typically ≥95% by GC14

• Solubility: Insoluble in water; soluble in alcohol, ether, and oils4

Applications

• Fragrances & Personal Care:
  Used as a fragrance ingredient in perfumes, colognes, deodorants, and a variety of personal care products, alpha terpinene imparts a bright, uplifting, and energetic note. It is especially valued for adding freshness and complexity to citrus, woody, and spicy fragrance accords12345.

• Flavorings:
  Alpha terpinene is employed as a flavoring agent in food and beverages, particularly in citrus-flavored products, confectioneries, herbal teas, and chewing gum. It delivers a zesty, citrus-like flavor that enhances taste profiles1234.

• Cleaning Products:
  Its fresh, citrusy aroma and solvent properties make alpha terpinene a popular ingredient in household and industrial cleaning products, including surface cleaners and detergents. It acts as both a scent enhancer and a degreasing agent234.

• Aromatherapy:
  Alpha terpinene is used in aromatherapy blends and essential oil diffusers for its invigorating, clarifying, and uplifting scent. It is believed to promote mental clarity, energy, and focus, and is sometimes included in natural remedies for its potential antimicrobial and antioxidant properties234.

• Industrial & Pharmaceutical Uses:
  In industry, alpha terpinene serves as a chemical intermediate in the synthesis of other compounds and is used in the production of paints, varnishes, and as a solvent. It is also explored for topical applications in antiseptic creams and ointments due to its antimicrobial action134.

• Other Uses:
  Alpha terpinene is sometimes found in medicinal preparations and has been studied for its antioxidant, antibacterial, and antifungal properties34.

Storage & Handling

• Store in a cool, dry, well-ventilated area away from direct sunlight and heat14.

• Keep containers tightly sealed and upright to prevent leakage.

• Handle with appropriate protective equipment and avoid inhalation of concentrated vapors14.

Summary Table

Alpha terpinene is a versatile and naturally derived terpene, valued for its refreshing aroma and broad utility in fragrance, flavor, cleaning, aromatherapy, and industrial applications