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| Synonyms:Terpineol mixture of isomers Alpha-terpineol Molecular Formula:C₁₀H₁₈O Molecular Weight: 154.25 HS Code: 2906199090 Grade: Industrial grade96% Fragrance Grade98% Electronic Grade99% Hazard Class:General Cargo | |||||||||
8000-41-7
bosschem
8000-41-7
Terpineol, also known as pine oil alcohol (chemical formula C10H18O, CAS 98-55-5 for α-terpineol, industrial grade for a mixture of four isomers with α-terpineol as the main component, CAS 8000-41-7), is a monoterpene alcohol, a colorless to pale yellow liquid with a pleasant lilac and pine aroma. It is the key ingredient in the "lilac" notes of soaps, laundry detergents, and perfumes; the familiar scent source (pine oil) in mine flotation workshops; and an industrial raw material for disinfectants, paint solvents, and fragrance synthesis—a multi-purpose ingredient, both a creator of fragrance and an aid in flotation and cleaning.
Basic information: Molecular formula C10H18O, molecular weight 154.25; exists in four isomers—α-terpineol (CAS 98-55-5, EC 202-680-6), β-terpineol (CAS 138-87-4, EC 205-342-6), γ-terpineol (CAS 586-81-2, EC 209-584-3) and 4-terpineol (CAS 562-74-3, EC 209-235-5), the industrial product is a mixture of isomers with α-terpineol as the main component (CAS 8000-41-7); naturally found in cardamom, tea tree oil, pine oil and bitter orange leaf oil, industrially mainly produced by hydration of α-pinene (the main component of turpentine) in the presence of sulfuric acid, and can also be synthesized via the limonene route.
Physically, it is a colorless to pale yellow liquid with a pleasant lilac-like aroma (with notes of pine, citrus, wood, resin, and a cooling sensation); its density is approximately 0.93 g/cm³; the melting point of the isomer mixture is approximately -36°C to -28°C, and its boiling point is approximately 214-217°C; it is slightly soluble in water (approximately 2.42 g/L) and soluble in organic solvents such as ethanol and ether; its flash point is approximately 88°C.
Chemically, terpineol is a tert-allyl alcohol, chemically stable but exhibiting typical alcohol reactivity: it can undergo esterification (to form terpineol acetate and other fragrance esters), dehydration (to form terpenes), and oxidation (to form menthol and ionone precursors), which forms the chemical basis for its use as a synthetic intermediate; it has wetting and degreasing effects on metal surfaces and exhibits weak surface activity; it also has antibacterial properties (effective against various bacteria and fungi). Storage must be kept away from fire and oxidants, and sealed to prevent moisture.
Grade Definition: This article discusses industrial-grade terpineol—a mixture of isomers obtained by hydration of α-pinene, used in industrial applications such as daily-use fragrances, food flavorings, mineral processing flotation, disinfectants, paint and ink solvents, and chemical synthesis. The main content is ≥ 96% , with clear controls on relative density, refractive index, boiling range, moisture content, acid value, and color. There is also fragrance-grade (content ≥ 98% , ≥ 99% , used in edible and high-end daily chemical fragrances). Terpineol has a slight irritant effect on the skin; edible fragrances must meet food additive standards.
From the perspective of mechanism of action, industrial-grade terpineol plays an irreplaceable role due to the combination of "aroma + weak surface activity + alcohol reactivity + antibacterial properties". The mechanism of action in different applications is as follows:
Terpineol has a pleasant lilac-like aroma (with pine, citrus, woody notes and a cool sensation), with distinctive aroma characteristics, a moderate boiling point, and long-lasting fragrance. It is a basic raw material for perfumery such as clove, pine, and lavender.
Terpineol molecules have polar hydroxyl groups and a hydrophobic terpene skeleton (amphiphilic structure), which can reduce gas-liquid interfacial tension, stabilize bubbles and improve mineral surface wettability. It is the most classic frother (pine oil) for non-ferrous metal ore flotation.
Terpineol is a terpene alcohol that can disrupt the cell membrane structure of microorganisms and denature proteins. It has inhibitory effects on Gram-positive bacteria, Gram-negative bacteria, and fungi, and is the main active ingredient in pine oil disinfectants.
Terpineol has good solubility for resins, oils, waxes and inks, and has moderate volatility and mild odor, making it an environmentally friendly solvent component for coatings, inks and cleaning agents.
Terpineol is a tert-allyl alcohol that can be converted into various fragrances such as menthol, geraniol, ionone, and linalool through esterification, dehydration, isomerization, and oxidation.
In summary, industrial-grade terpineol is a "multi-purpose terpene alcohol." With its aroma, weak surface activity, alcohol reactivity, and antibacterial properties, it is used in a wide range of fields, from daily fragrances to food flavorings, from mineral flotation to disinfectants, and from paint and ink solvents to fragrance synthesis intermediates. It is found in daily chemicals, food, mining, hygiene, coatings, printing, cleaning, and fine chemicals.
Industrial-grade terpineols have applications in various fields, including daily-use fragrances, food flavorings, mineral processing and flotation, disinfection and sterilization, paint solvents, printing inks, industrial cleaning, and synthetic intermediates, as detailed below:
Application fields: Chemical perfumery and daily fragrances.
Related products: fragrances for soap, laundry detergent and dishwashing liquid; shampoo and shower gel; perfumes and colognes; air fresheners; scented candles; deodorants; cosmetic fragrances, etc.
Why this is good for this application: Terpineol has a characteristic lilac-like scent (with pine, citrus, and wood notes and a cooling sensation), a moderate boiling point, and long-lasting fragrance, and is therefore a core ingredient in fragrance blends such as clove, pine and lavender.
Application fields: Food flavouring and seasoning industry.
Related products: Flavourings for beverages, confectionery, chewing gum, baked goods, ice-cream, jam, tea and coffee etc.
Why it can be used in this way: Terpineols meet the standards for use as food additives and can impart pine, mint and citrus aromas to food. It is a common ingredient in fruit, mint and tea flavoured food flavourings (must be used within standard limits).
Application Fields: Mineral processing and beneficiation.
Related products: copper ore flotation frother, lead-zinc ore flotation frother, molybdenum ore flotation frother, gold ore flotation frother, coal slime flotation frother, non-metal mineral flotation frother, pine alcohol oil (No. 2 oil) etc.
Why it works for this purpose: The amphiphilic structure of terpineol molecules, with polar hydroxyl groups and the hydrophobic terpene skeleton, can lower the gas-liquid interfacial tension, stabilise foam and improve the wettability of mineral surfaces. It is the most classic frother for flotation of non-ferrous metal ores.
Application areas: Hygiene cleaning and disinfection.
Related Products: Pine oil disinfectant, surface disinfectant, floor cleaning disinfectant, disinfectant wipes, industrial disinfectant, insect repellent and moth repellent etc.
Why it works for this purpose: Terpineol is able to dissolve the membranes of microbial cells and denature proteins, making it effective against both bacteria and fungi. Terpineol is the main active ingredient in pine oil disinfectants.
Application fields: Coatings and paint industry.
Related products: Paint thinners, Paint removers, Solvents for varnishes and wood coatings, Solvents for anti-corrosion coatings, Co-solvents for oil-based coatings, Paint cleaning agents …
Why it works for this: Terpineol has a strong dissolving power for resins and oils, moderate volatility, and mild odour. It is an environment-friendly coating solvent component and can improve the levelling and application performance of coatings.
Application areas: Printing inks and post-press processing.
Related products: Printing ink solvents, ink thinners, ink cleaners, plate cleaners, printing roller cleaners, screen printing ink solvents, etc.
How it works for this purpose: Terpineol is a solvent for resins and pigments, has moderate volatility, can adjust the viscosity and drying speed of ink, and can clean the printing equipment effectively.
Applications: Industrial cleaning and surface treatment.
Related products: Metal parts degreasing agents, cleaning agents for precision parts, cleaning agents for circuit boards, cleaning agents for machinery and equipment, cleaning agents for bearings and gears, hardware degreasing agents, etc.
Why it works for this purpose: Terpineol is a strong dissolver of grease and dirt but is also low in corrosiveness, allowing it to safely and effectively clean oil stains on the surface of metal and electronic components.
Applications: Production of fine chemicals and fragrance synthesis.
Related products: Synthetic menthol (L-menthol), geraniol, ionone, linalool, terpineol acetate, terpene derivatives.
Why it is effective for this purpose: Terpineol is a tert-allyl alcohol which can be converted into a number of fragrances such as menthol, ionone and linalool by esterification, dehydration, isomerisation and oxidation. It is an important raw material for terpene fine chemical products.
In summary, industrial grade terpineol (CAS 98-55-5/8000-41-7) is a versatile terpene alcohol. Daily-use fragrances, food flavourings, mineral processing flotation frothers, disinfectants and sanitation, paint solvents and diluents, inks and printing aids, industrial cleaning and degreasing, and synthetic chemical intermediates are eight applications where it is used for its lilac aroma, weak surface activity and reactivity and antibacterial properties of alcohols. Daily-use fragrance and mineral processing flotation are the largest consumption fields among them, and synthetic intermediates are the highest value-added application in fine chemicals. Note: Terpineol is a flammable liquid (flash point approx. 200 degrees F). It can irritate skin and respiratory tract with its vapours. Flavourings for food must be within food additive limits. Ventilation is needed for handling. Avoid prolonged skin contact.
