Description

α-Terpinene is a monoterpene hydrocarbon, a key intermediate and fragrance ingredient with a fresh, citrus-like odor. Its chemical reactivity and pleasant aroma make it a valuable building block in the synthesis of more complex molecules and a sought-after component in fine fragrances and flavorings. This compound is essential for manufacturers in the fragrance, flavor, pharmaceutical, and agrochemical industries seeking a reliable, high-purity terpene source.

Application

• Fragrance & Flavor Industry: Used as a fresh, citrus top note in perfumes, cosmetics, soaps, and as a flavoring agent in food and beverages.
• Chemical Synthesis: Serves as a crucial intermediate in the production of other terpenes, terpenoids, and fine chemicals, including p-cymene and terpinen-4-ol.
• Agrochemicals: Employed as a starting material or solvent in the formulation of certain pesticides and herbicides.
• Pharmaceutical Intermediates: Used in the research and synthesis of active pharmaceutical ingredients (APIs) and other bioactive compounds.
• Industrial Solvents & Cleaners: Acts as a natural, biodegradable solvent in specialty cleaning formulations and degreasers.
• Aromatherapy & Essential Oils: A natural component found in and often added to essential oil blends for its therapeutic aromatic properties.

Basic Information

Product Name	α-Terpinene
CAS No.	99-86-5
Molecular Formula	C10H16
Molecular Weight	136.23 g/mol
Synonyms	1-Isopropyl-4-methyl-1,3-cyclohexadiene; p-Mentha-1,3-diene; 1-Methyl-4-(1-methylethyl)-1,3-cyclohexadiene; Terpilene; 4-Isopropyl-1-methyl-1,3-cyclohexadiene
EINECS	202-795-1

Quality Control

Our α-Terpinene is produced and tested under a strict quality management system. We provide comprehensive quality assurance, including Certificates of Analysis (COA) with each batch, detailing purity, identity, and impurity profiles. Our standard grade meets typical industry specifications for fragrance and synthesis applications, and we can discuss compliance with specific standards such as FCC or ISO upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is light-sensitive and easily oxidized; for long-term storage, consider filling the headspace with an inert gas such as nitrogen or argon to maintain stability and prevent degradation.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 95.0%
Refractive Index (20°C)	1.475 - 1.485
Specific Gravity (20/20°C)	0.835 - 0.845

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.