Ingredient Glossary · Aroma Chemicals

Furaneol

4-Hydroxy-2,5-dimethyl-3(2H)-furanone · HDMF · CAS 3658-77-3 · Sheereen Khushboo — شیریں خوشبو

Strawberry ki khushbu (اسٹرابیری کی خوشبو) — the molecule that makes ripe strawberries smell extraordinary. A gourmand powerhouse from Firmenich's palette to Lahore's attar makers, Furaneol's caramel-strawberry character at parts-per-billion concentrations defines modern luxury fragrance globally. Complete scientific, olfactory, and Pakistani formulation reference.

CAS
3658-77-3
Identifier
~5
ppb
Odour Threshold
FEMA
GRAS
Food Safe
Scroll
Quick Reference

At a Glance

Common Names
Furaneol · HDMF · DMHF · Strawberry Furanone · Pineapple Ketone · Alletone · Furaneol® (Firmenich trademark)
CAS / FEMA / EC
CAS 3658-77-3 · FEMA 3174 (GRAS) · EC 222-908-8
COE 536 · Flavis 13.010 · PubChem CID 19309
Molecular Formula
C₆H₈O₃ · MW 128.13 g/mol
Furanone / Cyclic enol lactone
Physical Form
White to off-white crystalline solid · MP 77–79°C · BP ~187°C · Density ~1.21 g/cm³
Bio Shop™ stocks as 10% in PG solution
Solubility / LogP
Freely soluble in water (0.315 g/mL), ethanol, PG, carrier oils · LogP –0.53 (hydrophilic) · pKa ~7.6
Flash Point / Stability
Flash point >100°C · Sensitive to oxidation, UV, heat · "Olfactively unstable" (ScenTree) · Requires careful storage
Synthesis Origin
Route A: Acetaldehyde ethylation (petrochemical) · Route B: L-rhamnose condensation (plant carbohydrate) · No animal inputs
Halal Status
✓ Halal — plant/petrochemical origin; no animal, no ethanol, no haram intermediate. Sigma-Aldrich explicitly Halal/Kosher certified. Suitable for certified Pakistani products
Odour Character
Ripe strawberry, caramel, burnt pineapple, fruity candy · Sheereen Khushboo (شیریں خوشبو) · Gourmand, honeyed, warm
Odour Threshold
~5–50 ppb in air (method-dependent) — among the most potent aroma chemicals by weight · Powerful at sub-percent levels
IFRA Status (51st)
✓ Not a standalone prohibited/restricted ingredient at normal fragrance levels. Noted in "Contributions from natural sources" Annex; document usage levels per GMP
EU Allergen Status
✓ NOT listed under EU Cosmetics Reg. 1223/2009 Annex III. No mandatory declaration required for EU export products
Natural Occurrence
Strawberry (key impact odorant) · Pineapple · Guava · Mango · Raspberry · Roasted coffee · Bread crust · Caramelised sugar
Shelf Life (10% PG sol.)
24 months sealed ideal conditions · 12 months practical guideline in Pakistani subtropical climate · Amber glass, cool, dark, sealed
Introduction

Sheereen Khushboo — The Strawberry Molecule

Furaneol occupies a uniquely compelling position in the aroma chemical palette: it is simultaneously one of the most natural-smelling compounds available and one of the most technically demanding to formulate. This tiny crystalline molecule — no larger than six carbon atoms arranged in a five-membered ring — conjures the full sensory experience of a freshly picked strawberry dipped in warm caramel. That combination has made it indispensable in everything from high-end gourmand fine fragrances to affordable personal care products across global markets. At concentrations as low as 5 parts per billion, its olfactory impact is extraordinary, delivering the clean, honeyed, slightly caramelised warmth of perfectly ripe fruit — a character that is simultaneously familiar and luxurious.

Furaneol arises in nature through two entirely different chemical mechanisms: enzymatic biosynthesis in living fruit (through the FaQR/FaEO enzyme system from D-fructose-1,6-diphosphate), and thermal Maillard chemistry when sugars are heated. This dual origin explains its presence across more than 100 natural sources — from Kashmir's spring strawberry markets and Southeast Asian pineapples to freshly brewed coffee, caramelised sugar, and slow-cooked meat broths. For Pakistani fragrance professionals, Furaneol represents a significant opportunity. The decisive fine fragrance breakthrough came with Angel (Thierry Mugler, 1992), which pioneered the gourmand category and drove global demand for sweet-caramel materials. Pakistani formulators can now leverage this compound to create affordable inspired-by versions of international gourmand blockbusters — for bridal attars, wedding gifting, Gulf export EDPs, and premium personal care — at a fraction of Western retail prices.

Bio Shop™ Pakistan — Sourcing Note

Bio Shop™ Pakistan stocks Furaneol as a 10% solution in Propylene Glycol (PG) — the professionally recommended format for fragrance formulation. Because Furaneol is a solid (MP 77–79°C) active at extremely trace levels (0.01–0.5% actual in compound), the 10% PG solution enables accurate measurement on a standard 0.01g balance. 10g of the solution contains 1g actual Furaneol. Typical use: 0.1–1.5% of the 10% solution in compound for attars; 0.3–2.0% for fine fragrance. Certificate of Analysis with each batch. Visit bioshop.pk/products/furaneol-10-in-pg for current stock and pricing.

Molecular Identity

Chemical Identification

IUPAC Name4-Hydroxy-2,5-dimethyl-3(2H)-furanone
CAS Number3658-77-3
FEMA / ECFEMA 3174 (GRAS food flavouring) · EC 222-908-8 · COE 536 · Flavis 13.010
SynonymsHDMF · DMHF · Alletone · Strawberry furanone · Pineapple ketone · Furaneol® (Firmenich trademark)
Formula / MWC₆H₈O₃ · 128.13 g/mol · Degree of unsaturation: 3 (two C=O, one ring)
Structural ClassFuranone / Cyclic enol lactone — five-membered oxygen-containing ring with hydroxyl at C4 and methyl groups at C2 and C5
TautomerismEnol ⇌ keto tautomers; enol form predominates in solution and drives olfactory interaction. (R)-(+)-enantiomer: primary strawberry odour form
LogP / pKaLogP –0.53 (hydrophilic; moderate skin substantivity) · pKa ~7.6 · Density ~1.21 g/cm³
Synthesis — Route AAcetaldehyde ethylation: acetaldehyde → 2,5-hexynediol → hexane-2,5-diol-3,4-dione → Furaneol via acid cyclisation (H⁺, heat). Purity >99% GC. All petrochemical; no animal inputs
Synthesis — Route BL-rhamnose + piperidine acetate → AcOH/EtOH, heat → Furaneol via Maillard-type sugar-amine condensation. Plant carbohydrate origin; cleaner halal narrative
Natural OccurrenceStrawberry (key impact odorant, 1–8 mg/kg) · Pineapple · Guava (Pakistan) · Mango · Raspberry · Roasted coffee · Bread crust (Maillard)
Olfactory ReceptorOR5A1 and related sweet-fruity receptors · Enol-lactone system creates H-bond donor/acceptor that docks efficiently · (R)-enantiomer ~2–3× greater affinity than (S)
Urdu / PakistanSheereen Khushboo (شیریں خوشبو — sweet fragrance) · Strawberry ki khushbu (اسٹرابیری کی خوشبو) · Sheereen (sweet/beloved)
Grade & Purity Profiles

Four Commercial Grades

Furaneol is commercially available as pure crystalline solid and as pre-diluted PG/water solutions reflecting different formulation needs. Bio Shop™ Pakistan stocks the 10% Propylene Glycol solution — the recommended format for all fragrance and personal care work due to Furaneol's solid physical state and the very low usage levels required. Understanding grade differences is essential; the Pakistan market occasionally encounters underdeclared solutions or Ethyl Maltol substitutions.

Professional Standard · Bio Shop™ Grade
10% in PG Solution
Furaneol dissolved in Propylene Glycol · Clear liquid · Direct formulation use
Solution Strength
10%
1g Furaneol per 10g solution · Accurate dosing on 0.01g balance · Stable, ready-to-use
"The recommended format for virtually all Pakistani formulation work. Pure Furaneol is a solid that must be warmed and dissolved — the 10% PG solution eliminates this step entirely and enables accurate weighing at the trace levels used in fragrance. Bio Shop™ Pakistan primary stock."
Specialist Use · Pure Crystalline
Pure Solid ≥98% GC
White crystalline solid · MP 77–79°C · Must be dissolved before incorporation
GC Purity
≥98%
Maximum potency; requires warm dissolution; for scale or specialist laboratory use
"Best for large-scale production with analytical equipment. Field test: melt a small sample on glass slide — genuine Furaneol melts cleanly at 77–79°C. Melting above 85–90°C indicates Ethyl Maltol adulteration. Specify '≥98% GC fragrance grade' — not 'for synthesis' grade."
Premium · Biotechnological
Natural Grade
Zygosaccharomyces rouxii fermentation · FaQR enzyme pathway · R-enantiomer enriched
Origin
Bio-
tech
R-enantiomer enriched; EU/US "natural" labelling enabled; 10–50× synthetic price
"Enables 'natural fragrance' label claims for European and North American premium markets. Olfactorily superior at equal concentration due to R-enantiomer enrichment. For Pakistan domestic, Gulf export, or standard cosmetics — synthetic grade is recommended for optimal cost-in-use."
⚠ Avoid Without Verification
Adulterated / Underdeclared
Pakistan grey market · Ethyl Maltol substitution · 5–7% PG solution mislabelled as 10%
Actual Purity
Unknown
MP above 85°C = Ethyl Maltol · No strawberry character = wrong material entirely
"Three common Pakistan adulterations: (1) Ethyl Maltol labelled as Furaneol — melts at 89–93°C not 77–79°C; (2) underdeclared PG solutions (5–7% actual vs. 10% claimed); (3) low-grade Chinese material 90–95% GC. Always request Certificate of Analysis with batch number."
Dosage Science

Concentration Behaviour

All concentration levels below refer to the percentage of Furaneol 10% PG solution used in compound. Actual Furaneol content is one-tenth of these figures. Furaneol demonstrates a characteristic dual personality: at low concentrations it delivers a clean, fresh strawberry character of remarkable naturalness; at higher concentrations it shifts into broad caramel-gourmand territory. This concentration-dependent transition from fruity to caramellic reflects the sequential activation of olfactory receptor types. Pakistani formulators should note that sensory adaptation is significant — always evaluate with a fresh (unadapted) nose to avoid underdosing.

<0.05% of 10% PG sol. in CompoundSubliminal Sweetness
Below conscious perception threshold; adds subconscious sweetness and naturalness to the overall composition. Transforms heavy oriental or oud bases imperceptibly, giving them a lifted, honeyed quality that consumers notice without identifying as a separate note
0.05–0.2% of 10% PG sol.Fresh Strawberry Accent
Clean, fresh strawberry character with remarkable naturalness. Ideal for floral-fruity EDTs, rose attars (adds modern fruity sweetness above traditional gulab), light personal care. Reads as "mysterious sweetness" rather than obviously fruity in rose or musk bases
0.2–0.5% of 10% PG sol.Strawberry-Caramel Warmth
Distinct strawberry-caramel warmth; gourmand direction begins to emerge. Ideal for DPG attars, oriental EDP compounds, body wash. In Pakistani wedding attars, this level creates the "sweet cloud" effect prized in bridal fragrance — enveloping and romantic
0.5–1.5% of 10% PG sol.Prominent Gourmand Note
Furaneol is clearly audible as a featured note. Strawberry gives way to broader caramel-fruit bouquet with burnt sugar, caramelised pineapple, and tropical confectionery. Territory of Angel and its descendants. Requires careful balancing partners — musks, woods, vanillin — to prevent one-dimensionality
1.5–3% of 10% PG sol.Bold Caramel — Handle Carefully
Bold caramel-strawberry; high impact. Suitable for home fragrance (candles, reed diffusers), dessert accords, statement gourmand. In Lahore and Karachi summer heat, volatilisation accelerates sharply — the bold dose can become overwhelming. Include strong base anchors (musks, Benzyl Benzoate, Cashmeran)
Above 3% of 10% PG sol.Overdose — Not Recommended
Overpowering, cooked-fruit, caramel excess. Olfactory adaptation means the evaluator will cease to perceive the strawberry character while the caramellic base accumulates. Not recommended for any mainstream fragrance or personal care application. Pakistan test: stability at 40°C for 48 hours is essential at this level
Sensory Analysis

Olfactory Evolution

Opening · 0–5 min
Strawberry Explosion
Furaneol opens with an immediate, vivid strawberry burst — not the artificial sharpness of cheap confectionery, but the complex, honeyed, slightly caramelised warmth of perfectly ripe garden fruit at peak ripeness. This opening impression is universally recognisable across every cultural context. The OR5A1 receptor response is virtually instantaneous, creating a visceral sensory memory connection in Pakistani consumers that evokes the strawberry bazaars of Lahore's spring season — when fresh Lahori strawberries from Sahiwal and Kasur fill the markets with their fragrance. In Pakistan's summer heat (Lahore at 42–45°C, Karachi at 38–40°C), higher skin temperature accelerates volatilisation, creating a more immediate and intense burst on hot skin. The opening also carries a subtle pineapple facet from the ring structure, lending tropical complexity beyond a simple strawberry accord.
Heart · 5–30 min
Caramel Warmth
As the initial burst subsides, Furaneol's heart character emerges: caramelised strawberry warmth with distinct notes of burnt sugar, warm caramel, and ripe tropical fruit. The tautomeric shift from enol to keto form under skin pH and moisture conditions produces a somewhat more caramellic character in this phase — one of the compound's most valued attributes in fine fragrance formulation. Pakistani consumers describe this phase as the essence of sweet confectionery culture: like the sweetness of gulab jamun at wedding feasts, or the beloved caramel-topped kunafa in upscale Lahore restaurants. For attar makers in Kasur and Lahore who are adding Furaneol to traditional gulab-oud bases, this heart phase is where the transformation occurs — the traditional oriental becomes simultaneously familiar and modern, appealing to younger consumers raised on international fragrance culture.
Dry-down · 30 min–2 hr
Mellow Caramel
The dry-down phase develops a softer, more mellow caramel quality as the volatile strawberry character fades. A warm, skin-like sweetness remains — the compound partially converting from the enol to keto tautomer — and blends with the wearer's own scent chemistry to create a personalised, intimate character. Pakistani brides who wear attars with Furaneol-based sweet notes describe this effect as the scent seeming to "become part of them" — a highly desirable quality in wedding fragrance. In Karachi's coastal humidity (60–90% RH), moisture interaction extends this tautomeric shift, producing a slightly more mellow, honeyed dry-down character. Combined with musks (Galaxolide, Tonalide) and balsamic fixatives (Benzyl Benzoate), this dry-down phase can be sustained and made more diffusive, providing the sillage expected in Gulf-export compositions.
Long Dry-down · 1–4 hr
Sweet Ghost Note
Furaneol's skin substantivity is moderate due to its hydrophilic character (LogP –0.53), but a gentle sweet warmth persists for several hours when the compound is properly anchored in a formula. On fabric, it partitions into textile fibres and releases slowly, leaving a gentle sweet-fruity trail noticeable for several hours that reinforces the overall fragrance impression throughout the day — a quality particularly appreciated by Pakistani consumers who wear fragrances on shalwar kameez. The compound's gradual departure from skin is not a weakness but a structural feature: it clears the aromatic stage progressively, allowing base notes (musks, sandalwood, amber resins) to fully emerge. The perfumer's skill is ensuring the heart and base are sufficiently developed to maintain the composition's character as Furaneol's contribution softens.
Strawberry Caramel Burnt Sugar Pineapple Candy Gourmand Honeyed Warmth Fruity Sweet Confectionery Sheereen (شیریں) Ripe Red Fruit
Formulation Accords

Three Complete Formulas

Three production-ready formulas from the Bio Shop™ Pakistan reference document — exact weights, exact percentages. Formula 1 is a DPG attar (no alcohol — halal for all markets). Formula 2 is a fruity-oriental EDP compound using Perfume Premix as the sole alcohol base. Formula 3 is a luxury hair serum compound. All three use Furaneol 10% PG solution for accurate trace-level measurement.

Mehndi Ki Khushboo  ·  مہندی کی خوشبو
Sweet Rose Attar · DPG-based, no alcohol · 100g batch · Roll-on dabba · Bridal / mehndi gifting · Women 18–35
Geraniol pure2.0g  2%
Method
Weigh all ingredients into clean amber glass bottle. Add DPG last; stir with glass rod 3 minutes until homogeneous. Furaneol PG solution disperses easily in DPG at room temperature — no warming required. Transfer to amber glass roll-on bottles. Rest minimum 3 days before evaluation. Formula gives 0.05% actual Furaneol — trace level creating warm honeyed sweetness above rose. Longevity: 4–6 hrs on skin. Target: Pakistani brides, mehndi and baraat gifting, Eid season.
Gulabi Mausam  ·  گلابی موسم
Fruity-Oriental EDP Compound · Perfume Premix base · 100g compound · Gulf-export / urban professional 25–40
Hedione pure5.0g  5%
Linalool pure4.0g  4%
Geraniol pure3.0g  3%
Finished Bottle — Perfume Premix Only
EDP: 20g compound + 80g Perfume Premix  ·  EDT: 15g + 85g  ·  Parfum: 28g + 72g. Mature 2–4 weeks sealed, cool, dark. Longevity: EDP 5–7 hrs. Sillage: moderate fruity-sweet projection. Ideal for air-conditioned environments (Gulf offices, Lahore malls). Formula gives 0.08% actual Furaneol in compound — a vivid strawberry-caramel accent above rose-musk base.
Meetha Jism  ·  میٹھا جسم
Luxury Hair Serum Compound · Use as 100g finished serum · Premium personal care · Karachi / Lahore urban female market
Argan Oil10.0g  10%
Sweet Almond Oil20.0g  20%
Grapeseed Oil5.0g  5%
Method
⚠ Formula correction: Source document listed MCT at 68.0g; arithmetic adjusted to 62.3g MCT + 5.0g Grapeseed Oil to reach verified 100g total. In separate small vessel, pre-mix Furaneol 10% PG, Ethyl Maltol DPG, Linalyl Acetate, and Benzyl Benzoate together. Combine all carrier oils (Argan, Sweet Almond, MCT, Grapeseed) + Vitamin E in glass vessel; add fragrance premix and stir well. Transfer to dropper or pump bottles; allow 24 hr rest. Performance: long-lasting fruity-sweet scent on hair; light, non-greasy; antioxidant protection extends Furaneol stability.
Synergies

Classic Pairings

Furaneol's synergistic pairings are among the most commercially valuable in Pakistani formulation. Six confirmed classic combinations from the Bio Shop™ Pakistan reference document, each with documented character outcomes. All ratios shown as percentages of the respective 10% solutions in compound.

Sweet-Caramel Comparison

Furaneol vs. Alternatives

Ethyl Maltol
Pyranone · Six-membered ring · Cotton Candy, Sweet
Aroma vs. Furaneol
Cotton candy, sweet, fluffy — less fruity, no strawberry identity; more one-dimensionally sweet; more stable chemically
Threshold / IFRA
~50 ppb — less potent than Furaneol · ✓ IFRA no restriction · Not EU allergen-listed · Lower cost
Use With Furaneol
Essential synergistic partner: 0.3% Furaneol 10%/0.5% Ethyl Maltol 10% = candy heart of remarkable naturalness
Pakistan Application
Standalone sweetness for mass-market products; better base material; Furaneol adds the fruity strawberry layer Ethyl Maltol lacks
Verdict: Best companion, not substitute. Ethyl Maltol brings cotton candy base; Furaneol brings the fresh strawberry top. Combined they are the foundation of the global gourmand category. Available at bioshop.pk/products/ethyl-maltol-10-in-dpg
Raspberry Ketone
Phenolic Ketone · Rose-Raspberry, Fruity
Aroma vs. Furaneol
Raspberry, rose, fruity — similar fruit direction but no caramel depth; more phenolic-rosy; no burnt sugar facet
Threshold / IFRA
~10 ppb · ✓ IFRA no restriction · Not EU allergen-listed · Very stable vs. Furaneol's instability
Use With Furaneol
Complementary red-fruit layers: Furaneol for strawberry-caramel; Raspberry Ketone for rose-raspberry freshness
Pakistan Application
Effective in fruity-rose attars; more chemically stable for challenging Pakistan storage conditions
Verdict: Different fruit direction — raspberry-rose vs. strawberry-caramel. More stable but lacks Furaneol's caramellic depth and gourmand versatility. Strategic complement for complex red-fruit accords.
Vanillin
Phenolic Aldehyde · Vanilla, Creamy, Sweet
Aroma vs. Furaneol
Pure vanilla direction; no fruity character; deeper, richer, more Oriental base material; not a top note
Threshold / IFRA
~200 ppb — significantly less potent · ✓ IFRA no restriction · Not EU allergen-listed · Excellent stability
Use With Furaneol
Strong synergy: Furaneol + Vanillin dramatically amplifies caramel character; together = benchmark warm gourmand base
Pakistan Application
Essential base material for Pakistani Oriental attars; combined with Furaneol creates rich, sweet-oriental signature
Verdict: Different role — Vanillin is a base material, Furaneol is a top-to-heart accent. They complement powerfully. Vanillin + Furaneol together is the core of modern gourmand Oriental architecture.
Gamma-Decalactone
Lactone · Peach, Creamy, Fruity
Aroma vs. Furaneol
Peach direction; creamy-fruity; no strawberry; no caramel; sweeter, richer, more cosmetic character
Threshold / IFRA
~100 ppb — less potent · ✓ IFRA no restriction · Not EU allergen-listed
Use With Furaneol
Excellent: Furaneol + gamma-Decalactone = creamy-fruity richness; peach body under strawberry top; natural ripe-fruit impression
Pakistan Application
Creamy-peach personal care accords; excellent in body lotion and hair care for feminine Pakistani market
Verdict: Peach versus strawberry. Different fruit family but excellent as companion — Furaneol's strawberry top over gamma-Decalactone's peach body creates a convincing mixed-fruit accord of genuine naturalness.
Safety & Regulations

IFRA & Safety Overview

Educational summary of publicly available regulatory data as of 2024. Always consult the current IFRA Standards (51st Amendment), the ingredient Safety Data Sheet, RIFM Safety Database, and your regulatory advisor before commercial formulation. This document does not constitute regulatory or safety advice.

IFRA 51st Amendment — No Standalone Restriction at Normal Levels

Furaneol (CAS 3658-77-3) is addressed in the IFRA 51st Amendment primarily through the "Contributions from natural sources" Annex, which documents natural substances known to contribute Furaneol as a constituent. As a standalone synthetic ingredient at standard fragrance usage levels (0.01–0.5% actual in finished product), Furaneol presents no significant IFRA compliance challenge. The compound is not listed as a standalone prohibited or restricted substance for cosmetic product use at normal fragrance levels. Pakistani perfumers should document usage levels and retain formulation records per Good Manufacturing Practice, and consult the current IFRA amendment for any category-specific guidance involving natural extracts contributing Furaneol.

EU Allergen Status — NOT Listed (Export Advantage)

Furaneol does not appear on the EU Cosmetics Regulation 1223/2009 Annex III mandatory fragrance allergen declaration list, which covers 82 sensitising fragrance substances. This is a significant advantage for Pakistani manufacturers exporting to EU and UK markets — formulations containing Furaneol do not require specific labelling of this ingredient as an allergen, simplifying compliance documentation considerably. Combined with FEMA GRAS 3174 approval and JECFA Category I safety classification, Furaneol's regulatory profile across major export markets is one of the cleanest among potent aroma chemicals.

Pakistan DRAP & Halal — Fully Compliant

No current restriction under Pakistan Drug Regulatory Authority (DRAP) cosmetics guidelines. Halal status is unambiguous: commercial Furaneol is produced entirely from petrochemical acetaldehyde (Route A) or plant-derived L-rhamnose from buckthorn bark and citrus peel (Route B) — no animal-origin materials, no ethanol, no haram intermediates at any stage of synthesis. The compound has no structural relationship to alcohol; it is a cyclic lactone. Sigma-Aldrich's commercial product is explicitly labelled "Halal, Kosher" certified. Bio Shop™ Pakistan can provide manufacturer Halal compatibility documentation on request for professional accounts.

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Human Safety Profile — FEMA GRAS 3174 & JECFA Category I

Acute oral LD₅₀ rat >2,000 mg/kg — low acute toxicity. JECFA (Joint FAO/WHO Expert Committee) has assigned Furaneol to safety Category I: no safety concern at current levels of intake. Skin irritation: non-irritating at typical fragrance use levels; undiluted may cause mild irritation in sensitive individuals. Not classified as a skin sensitiser at typical use levels. Ames test negative (not genotoxic). No evidence of carcinogenicity. GHS classification: GHS07 Irritant (warning, H319 eye irritation possible). Flash point >100°C — low fire risk. Readily biodegradable; not persistent in aquatic environment at typical discharge levels. For children's products, limit to max 0.3% of 10% PG solution and avoid for children under 3.

⚠️

Formulation Stability — Key Precautions

Furaneol is notably more unstable than most aroma chemicals. The enol-lactone system is sensitive to oxidation (atmospheric oxygen produces discolouration from yellow to brown and loss of strawberry character), photodegradation (UV exposure rapidly degrades the compound — always use UV-opaque packaging), and pH extremes (strongly acidic below pH 3 or alkaline above pH 10 promote degradation). In aqueous and partially aqueous formulations, add 0.1% BHT or 0.05% alpha-tocopherol as antioxidant. Avoid iron and copper vessels — Fenton-type reactions can generate reactive oxygen species. In cold-process soap (pH 9–11), Furaneol degrades significantly; use melt-and-pour glycerine soap (pH 7–9) as a safer alternative. Always test finished formulas at 40°C for 48 hours before release to Pakistan retail.

⚗️

Citral & Aldehyde Compatibility — Test First

Furaneol shows potential cross-reactions with citral and reactive aldehydes under elevated temperatures. In Pakistani summer conditions, the combination of heat and humidity during Karachi's monsoon (July–September) and Lahore's summer can accelerate degradation in formulas containing citral-rich essential oils (lemon, lemongrass, verbena) alongside Furaneol. Include 0.1% BHT in any formula combining Furaneol with citral-containing materials. Additionally, synergistic interactions with strong phenolics such as Isoeugenol at high levels can produce medicinal-sweet off-notes. Conduct accelerated stability testing (40°C, 4–8 weeks) for any new combination before commercial scale-up.

Handling & Storage

Storing in Pakistan's Climate

Temperature
Ideal 15–25°C; refrigeration (10–15°C) extends stability. Above 40°C: accelerated oxidation and volatilisation — treat as temperature-sensitive stock. Air-conditioned storage mandatory in Pakistan
Container Type
Amber glass preferred (UV barrier); HDPE plastic acceptable. Avoid PET and clear glass. Never use metal containers — iron or copper catalyse Fenton-type oxidation of the enol system
Light Exposure
Primary degradation risk. UV radiation rapidly photodegrades Furaneol. Amber glass provides essential UV barrier; store inside covered cabinet away from all natural and artificial UV light sources
Shelf Life (10% PG sol.)
24 months under ideal conditions. Practical guideline for Pakistani subtropical climate: 12–18 months. Signs of degradation: yellow to brown discolouration; loss of strawberry character; stale or rancid note developing
Headspace Management
Fill containers to minimise headspace (oxygen exposure). For commercial stocks: nitrogen gas blanketing significantly extends shelf life. Never return unused material to the original container — contamination risk
Measuring Technique
10% PG solution is a clear liquid — easy to measure with standard pipette. For attar-level use (0.1–0.5% of solution in compound), a 0.01g precision scale is sufficient. Pure solid requires warming to 80°C before incorporation — use solution format for all standard work
Lahore Summer (May–Aug)
Temperatures routinely 38–45°C outdoors; steel-roofed warehouses can reach 55°C in direct sun. Never store in vehicles or non-air-conditioned spaces during summer. Use insulated cooler boxes for transportation. Air-conditioned storeroom at 20–25°C essential. Treat as high-priority during May–July peak heat
Karachi Coastal Climate
High humidity 60–90% RH year-round; monsoon season July–September highest risk. Seal immediately after each use. Check stock monthly for discolouration during monsoon. Humidity promotes aqueous degradation of the enol system even in sealed containers if inadequately protected. Use desiccant packets in storage area
Quality verification: Genuine Furaneol 10% PG solution is a clear, colourless to very pale yellow liquid with an unmistakeable clean strawberry-caramel character at trace. Three warning signs: (1) Yellow to brown discolouration = oxidative degradation; discard batch. (2) Cotton candy dominant / no strawberry = Ethyl Maltol substitution — verify by diluting to 0.01% in DPG; genuine Furaneol delivers fresh strawberry character, not pure cotton candy. (3) Pure solid melting above 85°C (vs. genuine Furaneol 77–79°C) = Ethyl Maltol substitution. Always request GC Certificate of Analysis with batch number from supplier. Sigma-Aldrich and Firmenich material carries Halal/Kosher certification documentation.
FAQs

Frequently Asked Questions

How can I verify the purity of Furaneol purchased in Pakistan? What are the common adulterants?+
The most reliable field test is the melting point test for the pure solid: genuine pharmaceutical-grade Furaneol melts sharply and cleanly at 77–79°C. Ethyl Maltol, the most common adulterant and substitute, melts at 89–93°C. A glass slide and hotplate or heat gun can distinguish these materials definitively. For the 10% PG solution format (as stocked by Bio Shop™), dilute a small amount to 0.01% in DPG and smell: genuine high-grade material delivers a clean, fresh strawberry-caramel with no harsh or phenolic off-notes. Cotton candy dominant character with minimal strawberry freshness indicates Ethyl Maltol substitution. The three most common adulteration scenarios in Pakistan are: (1) Ethyl Maltol labelled and sold as Furaneol; (2) underdeclared PG solutions (claiming 10% Furaneol when actual concentration is 5–7%); and (3) low-grade Chinese material with 90–95% GC purity. Always request a Certificate of Analysis from your supplier with a specific batch number. Bio Shop™ Pakistan provides GC documentation with every delivery and conducts organoleptic evaluation against reference standards before product acceptance.
How should I store Furaneol in Pakistan's hot and humid climate?+
Furaneol requires more careful storage than most aroma chemicals due to its sensitivity to heat, oxygen, and light — ScenTree technical database describes it as "olfactively very unstable." In Karachi's humid coastal climate (60–90% RH year-round), the risk is accelerated oxidative and hydrolytic degradation driven by atmospheric oxygen and moisture. Always store the 10% PG solution in amber glass, tightly sealed, inside an air-conditioned room. During Karachi's monsoon season (July–September), check stock monthly for discolouration — yellow to brown colour is the primary degradation indicator. In Lahore, summer temperatures regularly exceed 40°C outdoors and steel-roofed storage spaces can reach 55°C in direct sun. Never store Furaneol in vehicles during summer months or in any non-air-conditioned space. An air-conditioned storeroom kept at 20–25°C is essential. Practical shelf life in Pakistani subtropical storage conditions is 12–18 months for the PG solution; ideal conditions achieve 24 months. Minimise headspace in partially used containers by transferring to smaller bottles, and consider nitrogen gas blanketing for commercial stock quantities. Use dedicated pipettes — never return unused material to the original container.
Is Furaneol halal? What is its exact synthesis origin?+
Furaneol is halal without qualification when sourced from reputable manufacturers. Two established synthesis routes are used commercially, and both are fully halal. Route A (acetaldehyde ethylation): proceeds entirely from petrochemical-derived acetaldehyde and uses no animal-derived ingredients, no ethanol, and no haram intermediates at any stage. The sequence is: acetaldehyde → 2,5-hexynediol → hexane-2,5-diol-3,4-dione → Furaneol via acid cyclisation. Route B (L-rhamnose condensation): uses L-rhamnose, a plant-derived deoxy sugar extracted from buckthorn bark and citrus peel, condensed with piperidine acetate — again with no animal or ethanol involvement. The compound itself has no structural relationship to alcohol: Furaneol is a cyclic lactone (furanone), not an ethanol derivative. No fermentation with haram media, no animal-origin processing aids, no ethanol at any point. Third-party confirmation: Sigma-Aldrich's commercial Furaneol product is explicitly labelled "Halal, Kosher" certified. Pakistani formulators can use Furaneol with confidence in halal-certified personal care and fragrance products. Bio Shop™ Pakistan can provide manufacturer Halal compatibility documentation on request for professional accounts.
What is the correct usage percentage? Should I use pure Furaneol or the 10% PG solution?+
For virtually all fragrance and personal care formulation at any scale up to small commercial, Bio Shop™ Pakistan's 10% PG solution is the recommended format. The reason is purely practical: Furaneol is active at extremely low levels (0.01–0.5% actual in compound), which means using the pure solid would require weighing 0.01–0.5g per 100g formula — well below the accuracy of most small digital scales and requiring careful warming to 80°C to dissolve the solid. The 10% PG solution scales your working quantity by 10: instead of weighing 0.03g, you weigh 0.3g, which is workable on a standard 0.01g precision balance. Reserve the pure solid for large-scale commercial production with certified analytical equipment. As percentage of the 10% PG solution in compound: attar DPG base 0.2–1%; fine fragrance compound 0.3–1.5%; personal care body lotion 0.1–0.5%; shower gel 0.1–0.5%; hair serum 0.3–0.8%; home fragrance candle 0.5–2%. Critical note: 1g of 10% solution = 0.1g actual Furaneol. If your formula calls for 0.05g actual Furaneol, weigh 0.5g of the 10% PG solution.
How does synthetic Furaneol compare to natural strawberry extract for fragrance use?+
For fragrance applications, synthetic Furaneol is generally preferable to natural strawberry extract on every practical criterion. Natural strawberry extracts (absolute, tincture, or CO2) are extremely expensive — typically 50–200× the price-performance ratio of synthetic Furaneol — highly variable in composition between batches and harvest seasons, and often require standardisation to achieve consistent results. They also contain many compounds beyond Furaneol that may or may not be desirable. Synthetic Furaneol provides: (1) consistent purity ≥98% GC; (2) predictable, reproducible odour character batch-to-batch; (3) known regulatory status (FEMA GRAS 3174, JECFA Category I); (4) clear halal certification chain; and (5) dramatically better price-performance ratio. The only advantage of natural extracts is the "natural" label claim on finished product — which requires biotechnologically produced Furaneol (Route B enzymatic), not synthetic. For Pakistan domestic, Gulf export, and standard cosmetic applications, synthetic fragrance-grade Furaneol is the recommended choice. When specifying, always write "fragrance grade ≥98% GC" rather than "for synthesis" grade, which may contain higher residual impurities.
Do EU allergen regulations restrict Furaneol? What about export to Europe and the Gulf?+
For Pakistan domestic market: no restriction. Use Furaneol freely within IFRA guidelines. For EU and UK export: Furaneol is NOT listed under EU Cosmetics Regulation 1223/2009 Annex III as a mandatory declarable fragrance allergen. This is a significant competitive advantage compared to many commonly used aroma chemicals such as Linalool, Geraniol, Citronellol, and Hexyl Cinnamal, which all require declaration above 0.001% in leave-on products. Pakistani manufacturers exporting to EU can include Furaneol without triggering additional allergen labelling requirements, considerably simplifying regulatory documentation. Under FEMA GRAS 3174 approval, use in food flavouring is approved in the USA. JECFA safety Category I applies globally. For Gulf export (UAE, Saudi Arabia, Qatar): no specific restriction; standard GCC fragrance guidelines apply. Monitor ongoing EU Cosmetics Regulation amendment processes through IFRA or an EU regulatory consultant, as the allergen list is periodically updated. Under IFRA 51st Amendment, no standalone restriction applies to Furaneol at standard fragrance usage levels.
Which Pakistani consumers respond best to Furaneol-based fragrances?+
Four Pakistani consumer segments show the strongest commercial response to Furaneol-enhanced compositions. First, young women aged 18–35 in Karachi, Lahore, and Islamabad who follow international fragrance trends through social media — this segment responds most strongly to Furaneol at noticeable levels (0.5–1.5% of 10% solution in compound) in fruity-oriental and gourmand structures they associate with premium international brands. Second, bridal and wedding market consumers who expect sweet, enveloping, feminine scents for mehndi, baraat, and valima occasions — Furaneol-enhanced attars create the "sweet cloud" effect prized in bridal fragrance. Third, Gulf-diaspora Pakistanis who bring Khaleeji fragrance preferences home — particularly Khaleeji women who drive premium fragrance sales in UAE and Saudi Arabia and strongly appreciate sweet-fruity gourmand notes. Fourth, urban middle-class consumers seeking affordable premium personal care products with distinctive sensory experiences — body lotions and hair serums with even 0.1–0.3% of 10% solution develop a memorably sweet fruity warmth that transforms generic products. The character is generally less popular with older traditional attar consumers who prefer pure oud, rose, and musk profiles, though even here a trace dose (below 0.1%) enhances palatability without changing the fundamental character.
What Urdu brand names work for Furaneol fragrances? How does it perform in Pakistan's heat?+
Recommended Urdu and regional language naming vocabulary for Furaneol-enhanced compositions draws on sweetness and fruit culture: Sheereen (شیریں — sweet, beloved), Meetha (میٹھا — sweet), Gulabi Mausam (گلابی موسم — pink season), Mehndi Ki Khushboo (مہندی کی خوشبو — scent of henna night), Phal Ki Khushboo (پھل کی خوشبو — scent of fruit), Anarkali (after Lahore's famous bazaar where sweets and fragrances co-exist), Sheereen Jism (sweet body — for body care), Meetha Attar (sweet attar — for bridal line). Hot weather performance is a genuine asset in Pakistan: Furaneol's volatility means the compound diffuses more generously from skin at 35–40°C than at cooler temperatures, creating a stronger projection in Lahore's summer heat. However, this accelerated evaporation also shortens the topnote phase — the strawberry burst is vivid but brief. Pakistani formulators should pair Furaneol with slower-evaporating base notes (Galaxolide 3–6%, Benzyl Benzoate 8–10%, Tonalide) to ensure the overall composition maintains longevity and sillage as the Furaneol top note departs within the first 30–60 minutes in summer heat. Include 0.1% BHT or 0.05% alpha-tocopherol as antioxidant in any formula for unrefrigerated Pakistani retail environments.
Full Reference Document

Dive Deeper — Read the Complete Guide

Everything on this page and substantially more — complete synthesis mechanisms for both the acetaldehyde ethylation and L-rhamnose condensation routes with step-by-step reaction diagrams, full structure-odour relationship analysis including tautomerism and receptor binding science, detailed JECFA Category I safety assessment data, Firmenich's commercial development history, landmark fragrance appearances from Angel (Thierry Mugler, 1992) to Black Opium (YSL, 2013), natural occurrence data across 100+ natural sources, FEMA GRAS 3174 food flavouring permitted use levels by category, advanced Pakistani market segmentation analysis with three complete product concepts (Mehndi Ki Khushboo attar, Gulabi Mausam EDP, Meetha Jism hair serum), full stability testing protocol for Pakistan climate conditions including monsoon season guidance, six classic pairing accords with exact ratios, and a comprehensive 18-term glossary of key aroma chemical vocabulary — all compiled in one complete professional reference document.