This section provides an overview of eucalyptol (1,8-cineole or cineol), covering its manufacturing processes and regulatory status, applications in food, pharmaceuticals, oral care, flavours and fragrances, household products, and crop protection industries. Also, please check out the introduction to eucalyptol manufacturers, supply chain issues, eucalyptol suppliers, and eucalyptol prices. Sinofi can help you buy eucalyptol at bulk wholesale prices based on FEMA 2465 and CAS 470-82-6.
Table of Contents
What is Eucalyptol (1,8-Cineole)?
Eucalyptol, also known as 1,8-cineole or cineol, is one of the most widely recognized and commercially significant flavour and fragrance ingredients derived from terpene chemistry. It is a colorless monoterpenoid cyclic ether with a distinctive minty, camphor-like aroma. Long valued as the principal active component of eucalyptus oil, eucalyptol has matured into a bulk industrial ingredient with established roles in pharmaceuticals, oral care, flavours and fragrances, household products, and crop protection. It represents a versatile, high-impact, and well-characterized building block whose value extends well beyond simple eucalyptus reproduction. Its ability to deliver freshness, cooling, and medicinal credibility makes it a recurring tool across oral care, confectionery, beverage, and savoury applications. Eucalyptol is a 1,3,3-trimethyl-2-oxabicyclo[2.2.2]octane in which an oxygen bridge spans the 1,4-positions of a substituted cyclohexane ring, producing a rigid cage-like geometry. According to the U.S. Food and Drug Administration (FDA), eucalyptol is approved to be used in the flavour and fragrance industries.
Regulatory Status and Safety Considerations
Eucalyptol has been evaluated by major regulatory bodies like JECFA, EFSA, RIFM, ECHACHEM, NIST, IFRA, and WHO. It holds FEMA GRAS status under FEMA 2465 and is listed by the Flavour and Extract Manufacturers Association as safe for use in food at typical flavouring levels. It has also been evaluated by JECFA and is permitted under most major regulatory frameworks, including the U.S. FDA and EFSA, subject to good manufacturing practice. The Council of Europe and IOFI have likewise reviewed the substance.
Because of its high impact, eucalyptol is typically employed at very low concentrations within finished flavour compounds. Effective use levels in finished consumer products generally fall between 1-50 ppm, with oral care and medicated confectionery sitting at the higher end of this range. When formulating, the engineer should account for its relatively high volatility and consider pairing it with fixatives or co-formulating with longer-lasting cooling agents such as menthol, WS-23, or eucalyptus oil itself to extend the cooling perception. Compatibility with carbonyl-rich flavour bases is generally good, although interaction with strongly acidic media at elevated temperatures can promote slow degradation, so process timing and addition order should be evaluated during scale-up.
Odor Threshold and Sensory Profile
From a sensory standpoint, eucalyptol is one of the defining molecules behind the cool, fresh, camphoraceous character associated with eucalyptus and many medicinal-herbal accords. Its aroma is distinctly cineolic, herbaceous, and slightly minty with a clean, penetrating top note and a cooling tactile sensation on the palate that resembles, but is chemically distinct from, the cooling effect of menthol. On taste, it presents a fresh, slightly bitter, camphor-like impression with a lingering aromatic finish. Because of its high olfactory potency, it acts as a powerful character-impact molecule even at trace inclusion levels, and small variations in dosage can shift a profile significantly toward medicinal or herbal directions.
In flavour applications, eucalyptol delivers a fresh, minty, slightly bitter character with a long-lasting cooling impression. The taste profile becomes increasingly medicinal at higher use levels, which both expands the range of applications in which the compound can be deployed and constrains its use in formulations targeting subtler flavour profiles. The molecule is achiral, which simplifies sensory specification because optical isomerism does not introduce variability across batches or sources.
Cooling and Trigeminal Effects
A defining feature of eucalyptol from a formulator’s perspective is its activation of the transient receptor potential melastatin 8 channel, the same cold-sensing pathway activated by menthol. This trigeminal effect produces the perceptible cooling sensation that contributes substantially to the sensory experience in mouthwashes, lozenges, chewing gum, mint flavours, and respiratory-themed personal care products. Eucalyptol’s cooling effect is generally less intense than that of menthol but more diffuse and longer-lasting, making it particularly valuable in formulations seeking sustained refreshing impact rather than a sharp initial cold burst.
The cooling synergy between eucalyptol and menthol is one of the most exploited combinations in flavour formulation. Engineers typically find that combinations of the two compounds at appropriate ratios produce a cooling profile superior to either compound alone, with menthol providing the initial sharp cold impression and eucalyptol extending and rounding the sensation. This synergy underlies the formulation logic of essentially all major mouthwash and breath-freshening product categories.
Natural Occurrence
Eucalyptol occurs abundantly in nature and is the dominant constituent of Eucalyptus globulus oil, where it commonly accounts for 70 to 90 percent of the total composition. It is also a major component in rosemary, sage, bay laurel, cardamom, basil, and several mint species, contributing to their characteristic freshness and herbal lift. Commercially, the ingredient is supplied either as a fractionated natural isolate from eucalyptus oil—typically standardized to a minimum of 99.0 to 99.7 percent purity by gas chromatography—or as a nature-identical synthetic produced through controlled hydration of α-pinene. The natural-isolate grade is generally preferred for clean-label, organic, and natural flavour applications, while the synthetic grade offers tighter consistency and broader regulatory acceptance in some jurisdictions.
CAS No.: 470-82-6
According to the American Chemical Society, the CAS number of eucalyptol is 470-82-6.
CAS Name: Eucalyptol (1,8-Cineole)
Molecular Formula: C10H18O
Molecular Mass: 154.25
Appearance: Colorless, clear liquid.
JECFA Number: 1234
Food Chemicals Codex Listed: Yes
Boiling Point: 176.00 to 177.00 °C. @ 760.00 mm Hg
Solubility: Insoluble in water; miscible in oils
Other Names:
♦ 2-Oxabicyclo[2.2.2]octane, 1,3,3-trimethyl-
♦ p-Menthane, 1,8-epoxy-
♦ 1,3,3-Trimethyl-2-oxabicyclo[2.2.2]octane
♦ Cajeputol
♦ Cineol
♦ Cineole
♦ 1,8-Cineole
♦ 1,8-Epoxy-p-menthane
♦ Eucalyptol
♦ Eucalyptole
♦ 1,8-Cineol
♦ p-Cineole
♦ Eukalyptol
♦ Eucalytol
♦ Eucaliptol
♦ 1,8-Eucalyptol
Eucalyptol Odor
Odor Strength: High, recommend smelling in a 10.00 % solution or less.
Substantivity: 4 hours at 100.00 %.
Odor Description: At 10.00 % in dipropylene glycol, eucalyptus, herbal camphor, medicinal.
Taste Description: eucalyptus, minty, fresh, cooling, herbal.
Useful in: mint, savory spices.
FEMA Number 2465
According to the Flavour and Extract Manufacturers Association (FEMA), the FEMA number of eucalyptol is 2465.
Bulk Eucalyptol Manufacturers
Global bulk eucalyptol production capacity is primarily concentrated in the Asia-Pacific region, supported by extensive eucalyptus plantations, favorable climatic conditions, and integrated downstream chemical and aromatic industries. Top eucalyptol manufacturers like Mane, Symrise, Ernesto Ventos, and Lluch Essence focus on pharmaceutical-grade and high-purity material. China and India are the two manufacturing centers of gravity for bulk supply, with Australia contributing high-quality natural feedstock.
Sinofi is a bulk eucalyptol manufacturer in China, and we have a manufacturing facility with 2,500 square meters for the production of 1,8-cineole. We supply high-quality eucalyptol at bulk prices and serve food, pharmaceuticals, oral care, flavours and fragrances, household products, and crop protection industries worldwide.
Manufacturing Process of Eucalyptol
The manufacture of eucalyptol is, at its essence, an exercise in selective separation. The chemistry of the molecule itself is straightforward, but isolating it at pharmaceutical purity from a complex mixture of structurally similar monoterpenes requires a disciplined sequence of steam distillation, fractional rectification, and either freezing crystallization or adduct-based purification, all underwritten by rigorous analytical control.
Raw Material Selection and Feedstock Chemistry
The dominant industrial route to eucalyptol is the isolation and purification of the compound from cineole-rich essential oils, predominantly those derived from the Eucalyptus genus. Among the more than seven hundred eucalyptus species described botanically, only a small subset carries economic value as cineole feedstock. Eucalyptus polybractea, commonly known as blue mallee, is the highest-yielding species and routinely produces leaf oil containing 80 to 95 percent 1,8-cineole. Eucalyptus globulus, the most widely cultivated species worldwide, typically yields oil with 60 to 85 percent cineole content. The selection of feedstock is governed by cineole concentration, the impurity profile, agronomic yield, harvest logistics, and price. Because downstream purification adds considerable cost, manufacturers generally prefer feedstocks with cineole content above 70 percent, since lower-cineole oils require larger feed volumes and generate greater quantities of byproduct fractions.
Steam Distillation and Crude Oil Recovery
Crude eucalyptus oil is recovered almost exclusively by steam distillation of comminuted leaves and small terminal branches. In a typical industrial configuration, freshly harvested biomass is loaded into a stainless-steel distillation vessel and contacted with saturated steam, either generated externally and injected through a sparger or produced in situ from water held below a perforated grid. The combined vapor stream of water and volatile terpenoids is passed through a condenser, and the condensate is allowed to separate by gravity into an aqueous phase and an essential-oil phase in a Florentine receiver.
Fractional Distillation and Concentration
The crude oil obtained from primary distillation is rarely of sufficient purity for direct commercial sale as eucalyptol. The next step is fractional distillation, generally conducted under reduced pressure to lower the operating temperature and minimize thermal degradation. Using a packed column with sufficient theoretical plates, the lighter monoterpene hydrocarbons—α-pinene, β-pinene, sabinene, limonene, and p-cymene, all boiling between roughly 155 and 175 °C at atmospheric pressure—are removed as forerun fractions. The eucalyptol-rich heart cut is then collected, while heavier oxygenated terpenes such as α-terpineol, terpinen-4-ol, and the sesquiterpene fraction are retained in the residue.
Synthetic and Semi-Synthetic Routes
Although natural extraction dominates global supply, eucalyptol can also be produced semi-synthetically from terpene precursors, most notably α-pinene and α-terpineol. α-Pinene, an inexpensive byproduct of the pulp and paper industry recovered from crude sulfate turpentine, can be hydrated under acidic catalysis to α-terpineol, which then undergoes intramolecular cyclodehydration to yield 1,8-cineole. The transformation proceeds through a carbocationic mechanism in which Markovnikov-selective hydration produces a tertiary carbocation that is intercepted by the pendant hydroxyl group, forming the bicyclic ether. Sulfuric, phosphoric, or solid acid catalysts have all been reported, with selectivity strongly dependent on temperature, water activity, and reaction time.
Bulk Eucalyptol Suppliers
The bulk eucalyptol supply is unlikely to consolidate dramatically in the near term. Top eucalyptol suppliers like Mane, Symrise, Ernesto Ventos, and Lluch Essence combine in-country distillation operations with established export programs reaching North America, Europe, the Middle East, and Southeast Asia. Chinese eucalyptol suppliers provide comparable global reach, frequently with minimum order quantities starting at 100 to 1,000 kilograms.
Sinofi is a bulk eucalyptol supplier in China, and we have a warehouse with 1,200 square meters for high-quality 1,8-cineole. We sell different grades of eucalyptol at wholesale prices, serving end-users in food, pharmaceuticals, oral care, flavours and fragrances, household products, and crop protection industries.
Supply Chain of Eucalyptol
The global supply chain for eucalyptol, also known as 1,8-cineole, links agricultural cultivation in eucalyptus-growing regions to a diverse base of end-user industries spanning pharmaceuticals, oral care, flavours and fragrances, personal care, household products, and crop protection.
Supply Chain Structure
The eucalyptol supply chain can be understood as a sequence of six functional stages, each adding value, technical complexity, and regulatory documentation to the material as it progresses toward end use. The diagram below summarizes this structure, showing the principal flows from upstream cultivation through to end-use industries, together with the auxiliary synthetic route from α-pinene that supplements the natural supply.
Stage 1: Upstream Cultivation
- Eucalyptus plantations in China, India, Australia, South Africa, Spain, and Brazil.
- Harvest & Biomass Logistics.
- Leaves and terminal branches.
Stage 2: Primary Processing
Steam distillation of crude eucalyptus essential oil
Stage 3: Secondary Processing
Fractional distillation, freezing crystallization, and adduct purification
Stage 4: Bulk Manufacturing
- Standardization, QC, packaging, Pharma / Food / Technical grades
- Synthetic Feedstock Route: α-Pinene → α-Terpineol → 1,8-Cineole
Stage 5: Distribution Channel
- Direct Manufacturer Sales
- Specialty Distributors<br/>Brenntag, Univar, IMCD, Azelis, regional]
- International Traders & Brokers
- Digital B2B Marketplaces
Stage 6: End-User Manufacturers
- Pharmaceuticals: Respiratory, decongestant, analgesic
- Oral Care: Mouthwash, toothpaste
- Flavours & Fragrances
- Food, beverage, and personal care
- Cosmetics & Personal Care
- Household & Cleaning Products
- Agrochemicals: Natural insecticides and repellents
Wholesale and Buy Eucalyptol in Bulk
Bulk eucalyptol procurement rewards the same disciplines that distinguish strong purchasing organizations across all categories: rigorous supplier qualification, structured competitive sourcing, careful contract negotiation, robust quality acceptance procedures, and active supplier performance management, all underpinned by a complete total cost of ownership perspective and a deliberate multi-source risk management strategy.
Pre-Purchase Planning and Demand Forecasting
Effective bulk buying begins before any supplier is contacted. A disciplined eucalyptol buyer establishes annual demand forecasts in coordination with operations, formulation, and sales teams, identifies the grade and specification required for each end use, builds a calendar of expected purchase windows, and establishes a target inventory policy that balances stockout risk against working capital cost. For organizations using eucalyptol across multiple product lines, demand should be aggregated to the highest practical level to capture volume discounts, while preserving the flexibility to draw down inventory against multiple internal cost centers.
Supplier Identification and Qualification
The supplier qualification process is the single largest driver of long-term sourcing success and warrants more time than most purchasing organizations allocate to it. A complete qualification effort begins with the identification of candidate suppliers across multiple geographies and channels. Each candidate is then evaluated against a structured set of criteria covering quality systems, regulatory documentation, financial stability, capacity, geographic accessibility, sustainability credentials, and reference checks with existing customers.
For pharmaceutical and food applications, the qualification process must include review of certificates of analysis against the relevant pharmacopoeial monograph, audit of the manufacturing facility either on site or through a qualified third party, review of the regulatory dossier for completeness and currency, and confirmation of ISO 9001, HACCP, and, where relevant, kosher and halal certifications.
As a bulk eucalyptol manufacturer and supplier in China, we wholesale this ingredient to end users in food, pharmaceuticals, oral care, flavours and fragrances, household products, and crop protection industries. We also supply 1,8-cineole to small customers. Normally, they want to buy eucalyptol in small quantities. To serve them, we can sell eucalyptol at bulk prices and provide a one-stop purchasing service.
Eucalyptol Prices (USD/Kg)
Food & Pharmaceutical Grade Eucalyptol Prices (FCC/BP/USP, GC Content >=99.5%)
| Volume | Unit Price | Shipment |
| 50g | 8 USD | Express |
| 500g | 36 USD | Express |
| 1Kg | 52 USD/Kg | Express |
| 25Kg | >=30% cheaper | Express |
| 100Kg-Above | negotiable | Express / Sea |
The eucalyptol market is structurally tiered, and prices vary by an order of magnitude depending on purity, source (natural vs. synthetic), certification status, and packaging. Bulk-tonnage pricing is benchmarked off Chinese and Indian eucalyptus oil exports, given that China alone is estimated to produce roughly 75% of global eucalyptus oil and supplies the bulk of the cineole fractions used as starting material.
- Eucalyptus oil, 70%–80% eucalyptol content (technical and F&F base material), FOB China/India: approximately USD 10–18/kg in 200L drums for full-container loads (14400kg), with spot Chinese FOB prices reported as weak due to oversupply from camphor-laurel-derived cineole streams.
- Rectified eucalyptol prices (>=99% purity, BP/USP/FCC, food and pharmaceutical grades) in the US and EU record approximately USD 32–50/kg in 200L drums, with European landed pricing typically running EUR 28–45/kg (≈USD 33–54/kg) once duties,
- The eucalyptol prices of the Certified-natural or organic 99% (ECOCERT, or USDA NOP) trade approximately USD 45–80/kg in 200-kg drum quantities, mirroring the long-standing premium structure documented in academic literature (Scientific Reports of Nature), which placed organic Eucalyptus bosistoana oil between USD 45/kg and USD 75/kg, with high-cineole organic premium grades reaching USD 135/kg. In Europe, premium French and Iberian extractors typically position natural organic eucalyptol toward the upper end of this range (EUR 60–80/kg).
- Analytical-/reference-standard grade (small bottles, 100 mL–500 mL, e.g., SigmaAldrich C80601): retail pricing approaches USD 200–400/kg-equivalent, but this segment is tiny in volume terms and not relevant to industrial procurement.
Furthermore, the above eucalyptol price quotations do not include the express shipping fee. The reason is that the shipment cost may exceed the sample value of 1,8-cineole. However, the bulk wholesale eucalyptol prices will be much lower than those of small orders. Please contact us for more details.
Eucalyptol Specification
| Appearance | Colorless, clear liquid. |
| Odor: | Eucalyptus herbal camphor medicinal. |
| Purity (GC) | >=98%; >=99.5%; |
| Acid Value (mg KOH/g) | <=1.0 |
| Density (20°C) | 0.9190 – 0.9290 |
| Refractive index @ 20°C | 1.4540 – 1.4600 |
Eucalyptol Uses
Eucalyptol is a workhorse ingredient across food, pharmaceutical, oral care, flavour and fragrance, personal care, household, agricultural, and aromatherapy markets, with its combination of antimicrobial, anti-inflammatory, sensory, and solvent properties supporting an unusually wide range of applications.
Pharmaceutical Applications
The pharmaceutical sector is among the largest end users of eucalyptol by both volume and value. The compound has well-documented mucolytic, expectorant, and bronchodilatory effects, and it appears as an active ingredient in numerous over-the-counter and prescription products targeting respiratory conditions. In cough suppressants, lozenges, and cold relief formulations, eucalyptol works by thinning mucus, reducing airway inflammation, and providing the perceptible cooling and clearing sensation that consumers associate with effective relief. Inhalation rubs and chest balms, including widely recognized products such as Vicks VapoRub, rely on eucalyptol alongside menthol and camphor to deliver volatile compounds directly to the upper respiratory tract. Beyond acute cold and cough relief, eucalyptol is used in the management of chronic respiratory conditions.
Flavours and Fragrances
The flavour and fragrance industry uses eucalyptol across a wide range of food, beverage, personal care, and household applications. In flavour applications, the compound contributes a fresh, minty, slightly camphoraceous note that supports formulations in confectionery, chewing gum, hard candies, baked goods, and selected beverages. Eucalyptol was historically used as a cigarette flavouring agent, documented in industry disclosures from the 1990s. But it has declined alongside the broader contraction of the tobacco market, but remains present in some products.
In fragrance applications, eucalyptol contributes top-note freshness and a clean, aromatic character to a broad spectrum of products. It appears in fine fragrance compositions, body sprays, deodorants, soap and shower gel formulations, candle and air freshener products, and laundry care perfumes. Eucalyptol blends particularly well with mint, citrus, lavender, rosemary, pine, and other aromatic notes, supporting both traditional and modern fragrance constructions.
Oral Care
Eucalyptol has occupied a central role in oral care for more than a century. It is one of four essential oils combined in the original Listerine antiseptic mouthwash formulation, alongside thymol, methyl salicylate, and menthol, and continues to appear in numerous mouthwash, toothpaste, and dental rinse products today.
Personal Care and Cosmetics
Eucalyptol has expanded steadily into personal care and cosmetic formulations as consumer interest in natural and functional ingredients has grown. In skincare products, the compound is used for its mild antimicrobial and anti-inflammatory properties, particularly in formulations targeting blemish-prone skin, scalp irritation, and conditions such as mild eczema or psoriasis.
Household and Cleaning Products
The combination of antimicrobial activity, solvent properties, pleasant aroma, and natural-origin positioning makes eucalyptol an attractive ingredient for household cleaning products. It appears in surface cleaners, floor cleaners, multi-purpose sprays, dish detergents, laundry products, and air fresheners, often as part of formulations marketed under natural, plant-based, or essential-oil-based positioning.
Agricultural and Pest Control Applications
Eucalyptol has well-documented insecticidal and repellent properties, and these have supported a growing role in natural pest control products. The compound is effective against a range of insect pests, including mosquitoes, ticks, fleas, ants, cockroaches, stored-product pests, and certain agricultural pests. Mode of action research suggests interference with insect octopamine receptors and acetylcholinesterase activity, providing a biochemical basis for the observed effects.
Aromatherapy and Wellness
The aromatherapy and wellness sectors have driven meaningful growth in eucalyptol demand over the past decade. The compound appears in essential oil blends, diffuser products, massage oils, inhalers, and steam treatment products marketed for respiratory support, stress reduction, mental clarity, and general wellness. The evidence base for many aromatherapy claims is mixed, but for respiratory applications in particular, clinical research provides reasonable support for the perceived benefits associated with eucalyptus and rosemary essential oil inhalation.
Eucalyptol Benefits
Eucalyptol delivers a remarkably broad portfolio of benefits, encompassing respiratory and pulmonary support, antimicrobial and antiseptic activity, anti-inflammatory effects, oral health support, analgesic and topical relief, cognitive and mental wellness contributions, antioxidant properties, insect repellent activity, formulation versatility, and natural-origin positioning.
Respiratory and Pulmonary Benefits
The most extensively documented benefits of eucalyptol relate to respiratory function. Clinical research has demonstrated that the compound exhibits mucolytic, expectorant, bronchodilatory, and anti-inflammatory effects in the respiratory tract, supporting its longstanding use in cough, cold, congestion, sinusitis, bronchitis, and asthma management. By reducing the viscosity of bronchial secretions and supporting their clearance, eucalyptol helps relieve the productive cough and chest congestion characteristic of upper and lower respiratory infections.
Antimicrobial and Antiseptic Benefits
Eucalyptol exhibits broad-spectrum antimicrobial activity against a wide range of bacteria, fungi, and certain viruses. The compound’s lipophilic character allows it to penetrate microbial cell membranes, where it disrupts membrane integrity, interferes with enzymatic function, and impairs cellular replication. Documented activity against common pathogens includes bacteria implicated in respiratory infections, oral pathogens, and dermatophytic fungi associated with skin and nail infections.
Anti-inflammatory Benefits
Substantial research has documented the anti-inflammatory activity of eucalyptol across multiple tissue types and inflammatory pathways. The anti-inflammatory profile of eucalyptol is particularly valuable because it complements rather than replaces the activity of conventional anti-inflammatory medications, supporting use as part of multimodal treatment strategies.
Antioxidant Properties
Eucalyptol exhibits documented antioxidant activity, scavenging free radicals and supporting cellular defense against oxidative stress. While the compound is not among the most potent antioxidants in absolute terms, its antioxidant contribution adds meaningfully to its overall pharmacological profile and supports its use in products positioned around cellular health, anti-aging benefits, and oxidative stress management.
Eucalyptol in E-Liquid and Vaping Products
Eucalyptol has established a recognized presence in the formulation of electronic cigarette liquids and other vaping products, where it functions principally as a flavouring and cooling agent. Its inclusion reflects both its established sensory profile in adjacent consumer categories such as oral care and confectionery and its synergy with menthol, the dominant cooling compound in mint and tobacco-menthol e-liquid formulations.
Functional Role in E-Liquid Formulations
E-liquids are typically formulated from a base of propylene glycol and vegetable glycerin, optionally containing nicotine, with flavouring compounds added to deliver the sensory experience that drives consumer preference. Within this formulation system, eucalyptol contributes a distinctive fresh, camphoraceous aroma combined with a perceptible cooling sensation on inhalation. The cooling effect arises from activation of cold-sensing transient receptor potential channels in the oral and respiratory mucosa, the same biochemical mechanism that underlies the cooling effect of menthol. This makes eucalyptol a natural complement to menthol in mint, peppermint, and tobacco-menthol formulations, where the two compounds work together to produce the layered cool, fresh sensory profile that consumers associate with the category.
Common Formulation Contexts
Analytical research has documented eucalyptol presence across several product categories. Menthol and mint e-liquids represent the largest single context, with eucalyptol identified in the great majority of products tested in this category. Tobacco-menthol formulations seeking to replicate the sensory profile of conventional menthol cigarettes also routinely include eucalyptol, often alongside other terpenes and flavour compounds drawn from the broader essential oil palette. Herbal, botanical, and wellness-positioned formulations represent a smaller but growing context, with eucalyptol contributing both directly to the flavour profile and to the natural-origin positioning that supports premium pricing in this segment.
The compound also appears in cannabis-derived vaping products, including those containing tetrahydrocannabinol, cannabidiol, and other cannabinoids, where eucalyptol is one of several terpenes that contribute to the entourage effect framework that informs consumer perception of these products.
Regulatory Landscape
In the United States, the Food and Drug Administration regulates electronic nicotine delivery systems under the Family Smoking Prevention and Tobacco Control Act, with premarket tobacco product application requirements that have effectively restricted the legal market to a defined set of approved products. Flavoured e-cigarette enforcement priorities introduced in 2020 limited cartridge-based products to tobacco and menthol flavours, although disposable devices and open-system refill liquids remained subject to different rules. Eucalyptol-containing products positioned in the menthol and tobacco categories have generally remained available within this framework, while broader flavoured products have faced restricted market access.
The European Union regulates e-cigarettes and refill containers under the Tobacco Products Directive, which sets requirements covering nicotine concentration, container size, ingredient disclosure, and notification of flavouring components.
Slim-Format Cooling Cigarettes Using Eucalyptol
(Light Aromatic Base Blend; Cigarette Diameter: 5.5 mm)
- Cooling Agent Formulation: A blend of L-menthol (0.5%) and WS-23 (0.3%) was prepared, with the addition of 0.07% eucalyptol.
- Microcapsule Preparation: Beta-cyclodextrin and porous starch (in a 3:1 ratio) served as carriers, with a core-to-wall ratio of 1:5. Spray drying was conducted with an inlet air temperature of 200°C and an outlet air temperature of 90°C. The microcapsules were added at a concentration of 0.7%.
- Crushball Preparation: Sodium alginate and gelatin were used as wall materials to form beads with a diameter of 2 mm. Each bead contained WS-23 (38%) and limonene (0.5%) and was embedded within the filter rod (at a rate of 3 beads per cigarette).
- Production Control: The cut filler drying process utilized a gradient temperature profile (65°C for 20 min, followed by 80°C for 10 min). The processing loss rate for the cooling agents during the drying stage was 9%.
- Product Performance: The transfer rate of cooling agents into the mainstream smoke was 25%. Sensory evaluation yielded a cooling sensation score of 4 points, while online monitoring recorded a menthol concentration of 1.2 μg/mL in the smoke generated during the 3rd to 5th puffs. The cooling agents were incorporated using a dual-addition strategy involving both microencapsulation and crushball: the microcapsules were added directly to the cut filler, while the crushballs were embedded within the filter rod.
In conclusion, eucalyptol is a monoterpenoid that occupies a small but strategically important niche in the food, pharmaceuticals, oral care, flavours and fragrances, household products, and crop protection industries. As a bulk eucalyptol manufacturer and supplier in China, we sell different grades of eucalyptol at wholesale prices to clients around the world.