γ-Undecalactone · 5-Heptyloxolan-2-one · Peach Aldehyde · آڑو کی خوشبو
The most important peachy-lactone in professional perfumery — a complete scientific, olfactory and formulation reference covering the gamma-lactone ring system, FEMA GRAS 3091 status, IFRA-unrestricted clearance, Pakistani cultural resonance of sheftalu (شفتالو) and khubani (خوبانی), and three complete accord formulas for attar, EDP, and body care.
Colourless to pale yellow oily clear liquid · Density 0.950–0.965 g/cm³ · Mobile at 25°C
Boiling Point / Flash Point
BP 265°C (760 mmHg) · Flash Point >100°C (closed cup) · Safe for all standard fragrance processing
Refractive Index / LogP
RI 1.438–1.448 at 20°C LogP ~3.47 — lipophilic; excellent substantivity
Vapour Pressure / Solubility
~0.001 hPa at 25°C · Soluble in ethanol, oils, DPG, IPM · Practically insoluble in water
Halal Status
✓ Halal — fully synthetic from petrochemical n-octanol + acrylic acid. No animal inputs, no porcine material, no alcohol, no haram pathway at any stage
Odour Character
Rich, creamy peach-apricot with coconut, fatty, lactonic undertones · Aarou Ki Khushbu (آڑو کی خوشبو) · Sheftalu attar quality — warm, sensuous, ripe fruit warmth
Odour Threshold
~5 ppb in air · 1–5 ppb in water · Effective in compound at 0.01–0.05% · Exceptional impact-per-gram value; use 10% DPG for precision dosing at trace levels
IFRA Status (51st Amend.)
✓ Unrestricted — no usage limits in any product category. FEMA GRAS 3091 also approved for food flavour use. Not EU allergen-listed.
EU Allergen Status
✓ Not listed — no mandatory declaration required at any level in EU or Pakistan. Clean regulatory profile — a commercial advantage over many aroma chemicals
Typical Use Level
Fine fragrance: 0.05–2% in compound · Attar/oil: 0.1–3% · Body care: 0.1–0.5% · Candle/diffuser: 0.5–2% · Food flavour: 0.001–0.05%
Shelf Life
24–36 months sealed below 25°C, dark · Sensitive to oxidation — seal tightly after use · Amber glass or aluminium preferred for long-term storage
Introduction
Aarou Ki Khushbu — The Peachy Lactone That Shaped Modern Perfumery
Aldehyde C14 — formally gamma-undecalactone (CAS 104-67-6) — is one of the most strategically important lactone aroma chemicals in the professional perfumer's palette. A colourless to pale yellow oily liquid with the IUPAC name 5-heptyloxolan-2-one, it delivers an extraordinarily rich, creamy peach-and-apricot character with subtle coconut, fatty, and lactonic undertones that has shaped some of the most celebrated fragrances of the past century. Despite its longstanding trade name, it is structurally a cyclic ester (lactone) rather than a true aldehyde — a historical misnomer rooted in early 20th-century perfumery nomenclature where "aldehyde" was loosely applied to many oxygen-containing fragrance molecules. First synthesised circa 1908 and made famous by Guerlain's revolutionary Mitsouko (1919), it carries FEMA GRAS 3091 status and is completely unrestricted under IFRA's 51st Amendment.
For Pakistani formulators, Aldehyde C14 presents exceptional commercial opportunities. The South Asian palate's affinity for rich, ripe stone fruit aromas — sheftalu (شفتالو) from Swat's orchards, khubani (خوبانی) from Hunza's legendary apricot valleys — translates directly into fragrance preferences. Summer-season attars in Lahore and Karachi increasingly feature the creamy stone-fruit warmth that gamma-undecalactone delivers at commercially viable dosages. Combined with classic Pakistani attar bases of musk, rose, and sandalwood, even a 0.5–2% addition of Aldehyde C14 transforms an ordinary floral oil into something genuinely luxurious and culturally resonant. Its IFRA-unrestricted status, absent EU allergen listing, and dual fragrance/food-approved profile make it one of the most commercially compelling aroma chemicals available to the Pakistani market.
Bio Shop™ Pakistan — Sourcing Note
Bio Shop™ Pakistan stocks Aldehyde C14 in two formats: Pure (99%+ GC) at bioshop.pk/products/aldehyde-c14 for professional blending at ≥1% usage; and 10% solution in DPG at bioshop.pk/products/aldehyde-c-14-10-in-dpg for precision dosing at trace levels below 0.5% in compound. Certificate of Analysis (GC purity verification) available on request. Sourced from verified international manufacturers.
Molecular Identity
Chemical Identification
IUPAC Name5-Heptyloxolan-2-one
CAS Number104-67-6
EINECS / EC203-225-4
FEMA Number3091 — GRAS for food flavour use
InChI KeyGWYFCOCPABKNJV-UHFFFAOYSA-N
Formula / MWC₁₁H₂₀O₂ · 184.28 g/mol
Structural ClassGamma-Lactone (5-membered cyclic ester) — oxolan-2-one ring with n-heptyl chain at C-5
Ring System5-membered oxolane (tetrahydrofuran) ring with ester carbonyl — gamma-butyrolactone derivative
StereocentreC-5 is chiral · Commercial = racemic (R+S) mixture · (R)-enantiomer produces richer, more natural peach · (S)-enantiomer slightly more aldehydic
Olfactory ReceptorOR5A1 family — specialised for cyclic esters/lactones; distinct from linear aldehyde receptors; explains creamy vs. sharp character
Natural OccurrenceTrace quantities in ripe peach (Prunus persica), apricot (Prunus armeniaca), mango, passion fruit — not commercially isolable; synthesis is the only viable supply route
Synthesis RouteFree-radical addition of n-octanol to acrylic acid → 4-hydroxyundecanoic acid → intramolecular lactonisation; yield 75–85%; no animal inputs
Urdu / PakistanSheftalu / Khubani — آڑو کی خوشبو (Aarou Ki Khushbu) — aromatic language of ripe Swat peach and Hunza apricot
Name MisnomerCalled "Aldehyde" C14 by historical convention only — it is a lactone (cyclic ester), never an aldehyde; C14 references old carbon-counting method
Grade & Purity Profiles
The Four Key Commercial Grades
Aldehyde C14 is available in pure 99%+ fragrance grade, technical grade, 10% DPG dilution for precision dosing, and occasionally as adulterated material in Pakistan's grey market. Understanding the difference is critical: the pure grade delivers maximum olfactory impact per gram and is the most economical choice for attar applications at ≥1% usage. The 10% DPG format makes trace-level dosing safe and accurate. Always obtain a GC Certificate of Analysis from your supplier — Bio Shop™ Pakistan provides this on request.
Professional Standard · Bio Shop™ Grade
Pure 99%+ GC
Fragrance/FCC grade · Colourless to faint yellow · Mobile liquid at 25°C
Purity Level
≥99%
GC-FID verified · Acid value <2.0 · RI 1.438–1.448
"The professional standard. Use for all formula levels ≥1% in compound — the most economical format at scale. Rich creamy peach character intact; maximum olfactory impact per gram. Bio Shop™ Pakistan primary stock. GC Certificate of Analysis available on request."
Trace-Level Precision · Pre-Diluted
10% in DPG
Pure material pre-dissolved in Dipropylene Glycol · Standardised for sub-0.5% dosing
Active Level
10%
10g Aldehyde C14 + 90g DPG · Easy-flow liquid
"Essential for formulators dosing below 0.5% in compound — where weighing pure material accurately is difficult on standard scales. Remember: 1g of 10% solution = 0.1g actual Aldehyde C14. For a 0.3% formula in 100g compound, use 3.0g of this solution. Available at bioshop.pk/products/aldehyde-c-14-10-in-dpg."
Industrial Grade · Compound Manufacture
Technical Grade
95–97% GC · Acceptable for functional fragrance compounds; not fine fragrance standard
Purity Level
95–97%
Slightly elevated impurity profile · Some off-notes possible
"Suitable for high-volume laundry, candle, or industrial household fragrance compound. Not recommended for fine fragrance or premium attar — trace impurities create faint off-notes detectable to trained noses. For the Pakistani professional market, the modest cost saving is rarely worth the quality compromise."
Density outside 0.950–0.965 g/cm³ = adulteration signal
"Common Pakistan adulterations: DPG dilution (detectable: density below 0.93); gamma-Decalactone (C10) substitution (generic fruit, no creamy depth); fatty ester blends (lactonic character without authentic peach warmth). Field test: apply undiluted to strip; genuine material retains creamy-peach after 24 hours. Fades within 4–6 hours if adulterated."
Dosage Science
Concentration Behaviour
Aldehyde C14 behaves fundamentally differently across its usage range — from an invisible lactonic warmth enricher at trace levels to an explicit rich gourmand peach at 2%+. This graduated character makes it uniquely versatile: a single material that can serve as an invisible naturaliser in white florals or as the defining stone-fruit personality of a summer attar. Pakistani formulators should explore each level systematically. The starting recommendation from the docx is 0.1–0.3% for fine fragrance and 0.3–1% for attar, adjusted upward for summer applications where heat accelerates top-note burnoff.
<0.05% (Trace)Invisible Enricher
Nearly imperceptible as peach specifically; imparts subtle lactonic warmth and gentle sweetness elevation to any composition. Functions as a universal naturalising agent — the nose perceives "natural warmth" without identifying peach. Recommended as standard addition to white florals, musk bases, and oriental structures even when no peach note is intended.
0.05–0.1%Soft Peach Facet
Soft peach halo detectable to trained noses; strong naturalising effect on rose, jasmine, tuberose, and muguet compositions. The floral-fruity softness is perceived as making the composition "more expensive" and "more natural." Ideal for white floral, white musk, and oriental modifier applications where explicit peach character is not the objective.
0.1–0.5%Clear Peach-Cream
Clear, round peachy-apricot note; lush, creamy warmth with velvety depth; soft coconut undertone bridges fruity and oriental families. The standard professional range for EDP and modern chypre compositions. In attar format, this level is perceptible throughout the full wear arc. Best: fine fragrance EDP/EDT, fruity-floral compositions, chypre structures, premium personal care.
0.5–2%Explicit Stone Fruit Centre
Explicit, unmistakeable peach-cream with warm apricot facets; fruity-oriental character fully expressed; soft coconut undertone merges beautifully with musk and sandalwood. The ideal range for Pakistani summer attars. Resonates with sheftalu and khubani cultural memory. Longevity on skin: 8–12+ hours. Best: DPG-based attar, Pakistani summer EDP, stone fruit accord construction.
2–5%Rich Gourmand Peach
Rich, lush peach-apricot with an almost gourmand quality; faint buttery facet emerges linking the gamma-lactone family to dairy-lactonic associations. Heavy and sensuous — requires balancing with musk, woody, or dry elements to prevent composition from becoming oversweet. Bold fruity soliflore territory; Pakistani bridal and Eid gifting attars. Best: luxury attar, bold fruity-oriental EDP launches.
5–10%+Specialist / Flavour Range
Very heavy fatty-peach dominance; the primary domain of food flavouring (FEMA GRAS 3091) rather than fine fragrance. At these levels in fragrance compound, the effect can become cloying and food-adjacent — requiring specialist formulation skill. IFRA imposes no restriction, but aesthetic judgement strongly advises careful evaluation. Acceptable only in very specific peach-essence concentrates or flavour applications.
Sensory Analysis
Olfactory Evolution
Opening · 0–15 min
Invisible Warmth
At typical fragrance dosages, Aldehyde C14's low vapour pressure (~0.001 hPa at 25°C) means it contributes little to the opening of a fragrance on its own. Instead, it operates as an invisible structural enricher from the first moment — broadening the sweetness of florals, softening harsh green or aldehydic edges, and lending a subtle mouth-watering fruitiness that the nose perceives as natural warmth rather than synthetic addition. A standalone evaluation of pure material on a strip, however, reveals an immediate and distinctive rich, round, velvety peach note: the aroma of a fully ripe sun-warmed sheftalu from a Lahore orchard in late July. In Pakistan's summer heat, this foundation-building role is critical for longevity.
Heart · 15 min – 3 hr
Peach-Cream Bloom
As lighter top notes fade, Aldehyde C14 emerges as the peachy-creamy heart of the composition. The impression is simultaneously fruity and creamy — ripe apricot slightly more floral than pure peach, with a whisper of coconut cream and a soft oily fatty undertone that lends body and depth. At moderate dosages (0.3–1%), the character is lush and sensuous without being gourmand. The (R)-enantiomer (present in the racemic commercial blend) contributes a particularly natural peach quality. Culturally, this stage evokes the stalls of Lahore's Anarkali Bazaar piled with golden khubani and the sweetly aromatic air of Hunza's apricot orchards — fragrant memories deeply embedded in Pakistani sensory culture.
Base · 3–24+ hr
Lactonic Sustain
The dry-down of Aldehyde C14 is one of its most technically important characteristics — rather than fading, it softens and integrates. The explicit peach note becomes a creamy, lactonic undertone that merges seamlessly with skin chemistry to produce a warm, subtly fruity, skin-intimate warmth that persists for many hours. On warm skin — normal in Karachi's coastal humidity or Lahore's summer heat — the release is steady and reassuring. The compound's high LogP (~3.47) promotes strong partitioning into the skin's lipid-rich outer layers, creating a slow-release quality that is precisely what Pakistani attar consumers demand: all-day wear that delivers value for the fragrance investment. On blotter strip, tenacity exceeds 340 hours.
Fabric · 24–120+ hr
Textile Persistence
Aldehyde C14's substantivity on fabric is exceptional — the creamy-peach character is detectable on cotton and synthetic fibres well beyond 24 hours at 0.5% in compound. This makes it highly valuable for fabric conditioner and laundry fragrance applications. In Pakistan, where freshly pressed, beautifully fragranced shalwar kameez for Eid, mehndi, and Jumma are culturally central presentations, this textile persistence is a commercially significant property. Home fragrance applications — bakhoor blends for Ramadan, room sprays for wedding gatherings — also benefit greatly from the warm, peachy-sweet ambient quality that Aldehyde C14 sustains long after initial application.
Three production-ready formulas from the Bio Shop™ Pakistan reference document — exact weights, exact percentages, all 100g batches. Formula 1 is a DPG-based attar (no alcohol — halal for all markets), built around the Hunza apricot cultural concept. Formula 2 is an EDP compound using Perfume Premix as the sole alcohol base. Formula 3 is a body lotion fragrance compound designed for leave-on skin care. All ingredients available at bioshop.pk.
Hunza Khubani · حنزہ خوبانی
Pakistani Festival Attar · DPG-based, no alcohol · 100g batch · Roll-on dabba or bakhoor base
Pre-dissolve Coumarin and Ethyl Vanillin in warm DPG (40°C) first. Add compound at 2% into room-temperature lotion base. Homogenise thoroughly. Store in opaque packaging. Performance: opens with peach-blossom freshness; settles to warm creamy-fruity skin warmth for 4–6 hours. Year-round use; ideal for personal care gifting.
Synergies
Classic Pairings
Aldehyde C14 is chemically compatible with essentially all fragrance materials — its lactone ring creates no reactive antagonism with any common aroma chemical. The following pairings represent the most commercially successful and culturally relevant combinations for Pakistani formulation, drawn directly from the reference document. Ratios shown are in fragrance compound percentages.
Gamma-Lactone · 5-Hexyloxolan-2-one · 10 carbons total
Aroma vs. C14
Fruity, more generic peach-plum character — less creamy depth than C14; shorter chain means lighter, more diffuse impression
IFRA (51st)
✓ Unrestricted · Not EU allergen-listed
Use with C14
Blends well alongside C14 to build more dimensional stone fruit accords — shorter chain adds top-note fruity brightness to C14's creamy heart
Pakistan Context
Lower cost alternative but noticeably inferior character; commonly used as an adulterant in grey-market C14 — a key reason to buy verified material
Verdict: Good complementary material at 20–30% of C14 level to extend the stone-fruit palette. Not a direct substitute — C14's creamy depth cannot be replicated by C10 alone. Verify supplier's GC to ensure pure C14, not C10 substitution.
gamma-Nonalactone (Aldehyde C18)
Gamma-Lactone · 5-Pentyloxolan-2-one · 9 carbons total · "Coconut Aldehyde"
Aroma vs. C14
Coconut-dominant, tropical, heavy cream — less peach, more coconut than C14; shorter chain shifts character from stone fruit toward tropical cream
IFRA (51st)
✓ Unrestricted · Not EU allergen-listed
Use with C14
Classic multi-lactone cocktail: combine at 10–20% of C14 level to add tropical coconut depth — the "Persicol" base concept exploits exactly this pairing
Pakistan Context
Coconut facet appeals strongly to Pakistani consumers in summer attar context; adding C18 to a C14-led accord enriches tropical warmth without diluting the peach character
Verdict: Excellent layering partner in lactone cocktails. C14 + C18 (Ald C18) + C10 creates a sophisticated, dimensional stone fruit accord that covers the full peach-apricot-coconut spectrum more convincingly than C14 alone.
delta-Undecalactone
Delta-Lactone · 6-membered ring · C11 total · Creamier, softer peach
Aroma vs. C14
Creamier, softer peach impression — 6-membered delta ring vs. 5-membered gamma gives a rounder, less explicit, more powdery-fruity character than C14
IFRA (51st)
✓ Unrestricted · Not EU allergen-listed
Use with C14
Complements rather than competes — blend at 20–30% of C14 level to soften the gamma-lactone edge and add a rounder, more ambery peach dimension
Pakistan Context
More suitable for older, traditional consumer segments who prefer softer, less explicitly fruity bases — complements oud-dominant attars without the forward stone-fruit presence of C14
Verdict: Useful modifier to soften C14. Not a replacement — the gamma ring structure is what gives C14 its distinctive peach impact. Use delta-Undecalactone at 15–25% of C14 level for a creamier, more powdery peach direction.
Sharp, fresh pineapple-butyric, very volatile — the opposite direction to C14's creamy warmth; provides explosive fresh fruit top note with no lactonic creaminess
IFRA (51st)
✓ Unrestricted · Not EU allergen-listed · FEMA GRAS also
Use with C14
Powerful top-note contrast: Ethyl Butyrate at 0.1–0.3% in compound creates a fresh fruity burst above C14's creamy heart, producing a more complete stone-fruit pyramid
Pakistan Context
Ideal for bright, modern summer EDP compositions targeting young urban Pakistani consumers — Ethyl Butyrate's fresh pineapple opens the composition; C14's peach-cream sustains it
Verdict: Different role entirely — use as a volatile top-note counterpart to C14 in fruity-floral constructions. Ethyl Butyrate launches the composition; C14 sustains and warms it. Together they create a credible fresh-to-creamy stone fruit arc.
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, and your regulatory advisor before commercial formulation. This document does not constitute regulatory or safety advice.
✅
IFRA 51st Amendment — Completely Unrestricted
Under IFRA's 51st Amendment (2023), gamma-undecalactone carries NO quantitative restriction in ANY product category — fine fragrance, attar, EDT, EDP, cologne, personal care, home fragrance, candle, soap, laundry. Pakistani perfumers may use Aldehyde C14 at any technically appropriate level across all product types, constrained only by aesthetic judgement and good formulation practice. This is one of the most permissive regulatory profiles available for any aroma chemical.
✅
FEMA GRAS 3091 — Dual Fragrance & Food Approval
Aldehyde C14 holds FEMA GRAS 3091 status — approval for use as a food flavour material by the Flavour and Extract Manufacturers Association (USA). This dual fragrance/food-approved status, held by relatively few aroma chemicals, reflects the compound's exceptional safety record. In food applications, use at 1–50 ppm in the final product. Food-grade (FCC specification) material should be verified before food use. Note that Bio Shop™ Pakistan's standard fragrance-grade material may not carry FCC specification — confirm before any food application.
✅
EU Allergen & Pakistan DRAP — Not Listed
Gamma-undecalactone is NOT listed among the EU Cosmetics Regulation (EC 1223/2009) mandatory declarable fragrance allergens — no label declaration is required at any usage level in either leave-on or rinse-off products. This is a significant commercial advantage: unlike linalool, limonene, or citronellol, C14 can be used freely without triggering allergen disclosure requirements even in EU-export products. No restriction applies under Pakistan DRAP cosmetics guidelines. No equivalent allergen regulation in Pakistan domestic market.
🧪
Human Safety Profile — Well Documented
Oral LD₅₀ >5,000 mg/kg (practically non-toxic orally). Dermal LD₅₀ >5,000 mg/kg. Non-irritant to skin at normal fragrance usage levels — mild irritant undiluted on sensitive skin. Mild eye irritant — avoid direct eye contact with pure material. Ames test negative (non-mutagenic). Non-phototoxic. No skin sensitisation potential reported at fragrance use concentrations. RIFM (Research Institute for Fragrance Materials) has evaluated and confirmed safety for intended fragrance use. LogP ~3.47 promotes good dermal retention with slow systemic absorption.
🌿
Environmental — Readily Biodegradable
Gamma-undecalactone is readily biodegradable and poses minimal environmental persistence concerns at typical fragrance usage levels — a significant contrast to polycyclic musks such as Galaxolide (Aquatic Chronic Cat. 2). Not classified as PBT (Persistent, Bioaccumulative, Toxic) under EU Annex XIII. Not on the SVHC (Substances of Very High Concern) list under REACH. Aquatic toxicity at usage levels is low. Sustainable sourcing note: suppliers with RSPO-certified palm-derived n-octanol supply chains exist for brands seeking green credentials. Dispose responsibly — do not discharge bulk waste into Karachi or Lahore waterways.
⚠️
Soap & Alkaline Stability Caution
The gamma-lactone ring of C14 is susceptible to hydrolysis under strongly alkaline conditions (pH >10). In bar soap (pH 9–10.5), partial ring-opening may occur during cure, reducing the peach character over the product's shelf life. To preserve the note in soap: add compound at trace stage after cooling to <50°C; use minimum effective dose (≤0.5%); accept some character reduction over shelf life. In liquid soap (pH 5.5–7), stability is significantly better. In shampoo, conditioner, and body lotion (pH 4.5–6.5), stability is excellent. Never use in strongly alkaline cleaning products (pH >11) where ring-opening is rapid and complete.
Handling & Storage
Storing in Pakistan's Climate
Temperature
Ideal: 15–25°C. Refrigeration (4–10°C) extends shelf life but may cause slight cloudiness — clears on gentle warming. Avoid prolonged storage above 40°C; chemical stability acceptable to 45°C but oxidative degradation accelerates significantly.
Container Type
Amber glass (UV protection) or aluminium — both suitable. Avoid clear glass in bright environments. Opaque HDPE acceptable for short-term storage. Seal tightly after each use to minimise oxygen headspace — primary cause of off-note development.
Light Exposure
Avoid direct sunlight and UV — accelerates both oxidative degradation (yellowing, soapy off-notes) and photodegradation of the lactone ring. Store in dark cupboard or inner room. Amber glass provides essential UV filtering for any window-exposed storage position.
Shelf Life
24–36 months properly sealed and cooled. Unlike pure hydrocarbons, the ester (lactone) bond is oxidation-sensitive over extended storage. BHT antioxidant (0.01–0.05%) significantly extends shelf life if added. Check colour — strongly yellow or amber = oxidation; should be colourless to faint yellow.
Measuring Technique
C14 is a mobile liquid at 25°C — straightforward to measure. Digital scale minimum 0.01g resolution recommended. For dosages below 0.5% in compound, use the 10% DPG solution to avoid measurement errors. Weigh by mass only — volumetric measuring introduces density-related errors.
Pre-use Handling
Pre-dissolve in DPG or Perfume Premix before adding to formula for even distribution. For attar applications in DPG, stir at room temperature — no warming required. Coumarin (if used alongside) must be pre-dissolved in warm DPG first as it is a powder at room temperature.
Lahore Summer (May–Aug)
Extreme inland heat 42–45°C+ significantly accelerates oxidative degradation. Air-conditioned storage is essential. Without A/C, shelf life may reduce to 12–18 months. Keep away from window sunlight — direct sun exposure through glass dramatically worsens degradation even in sealed containers.
Karachi Coastal
Coastal humidity (38–45°C, high relative humidity) accelerates oxidation of open containers. Seal tightly after every use. Air-conditioned storage recommended in summer. The compound itself is not directly affected by moisture, but humidity on container seals can compromise closure integrity over time.
⚠ Quality check: Genuine fragrance-grade Aldehyde C14 (99%+ GC) is a colourless to faint yellow mobile liquid. Strongly yellow or amber colour indicates oxidative degradation — do not use in fine fragrance. Density should measure 0.950–0.965 g/cm³; readings outside this range indicate dilution or substitution. Blotter strip test: authentic C14 retains creamy-peach character after 24 hours. Adulterated or degraded material fades to generic fatty notes within 4–6 hours. Always request GC Certificate of Analysis from supplier.
FAQs
Frequently Asked Questions
Is Aldehyde C14 halal? What is its exact synthesis origin?+
Yes — Aldehyde C14 (gamma-undecalactone) is definitively halal-suitable. Its synthesis proceeds entirely from petrochemical or oleochemical raw materials: n-octanol (from petroleum refineries or palm fatty acid processing) and acrylic acid (a commodity petrochemical). The reaction produces 4-hydroxyundecanoic acid as an intermediate, which spontaneously cyclises to form the gamma-lactone. No animal products, porcine ingredients, blood, ethanol (alcohol), or material derived from any haram source is involved at any stage. The compound is a pure synthetic cyclic ester with complete clarity on its raw material composition. JAKIM (Malaysia), SANHA, IFANCA, and mainstream Pakistani Islamic scholars consistently classify purely synthetic aroma chemicals from petrochemical or oleochemical pathways as halal when used in external (non-ingested) products. For formal product halal certification, Bio Shop™ Pakistan can provide manufacturer raw material declarations confirming petrochemical origin. There is no scholarly disagreement on this specific compound's halal status.
Why is it called "Aldehyde C14" when it is actually a lactone?+
The "Aldehyde" naming is a historical misnomer rooted in early 20th-century perfumery practice. In the 1900s–1920s, the term "aldehyde" was applied loosely by perfumers and chemists to a broad range of oxygen-containing aroma chemicals, including both true aldehydes (compounds with a terminal -CHO group) and esters, lactones, and other functional groups. The "C14" refers to an older carbon-chain counting convention used before modern IUPAC nomenclature was universally adopted — in this case, it does not mean 14 carbons (the compound is C₁₁). The name became so commercially entrenched through Guerlain's Mitsouko and subsequent trade usage that it persisted despite being chemically incorrect. Gamma-undecalactone is correctly classified as a gamma-lactone (5-membered cyclic ester) — a completely different functional group from an aldehyde with entirely different chemistry, reactivity, and regulatory profile. The trade name "Peach Aldehyde" similarly reflects this historical usage rather than any aldehyde chemistry.
Pure 99%+ or 10% DPG solution — which format should I buy?+
The rule is straightforward: use pure (99%+) for dosages of 1% and above in a compound — the pure format is more economical at scale and delivers maximum olfactory impact per gram. Use the 10% DPG solution for dosages below 0.5% in compound, where weighing small amounts of the pure material accurately on standard lab scales risks significant overdosing errors. For a typical attar targeting 0.3% Aldehyde C14 in 100g of compound, weigh 3.0g of the 10% DPG solution (= 0.3g actual C14) rather than attempting to measure 0.3g of pure material directly. Critical calculation note: 1g of the 10% solution contains 0.1g actual Aldehyde C14 — always adjust your formula calculations accordingly. Bio Shop™ Pakistan stocks both formats: pure at bioshop.pk/products/aldehyde-c14 and 10% DPG at bioshop.pk/products/aldehyde-c-14-10-in-dpg. The 10% DPG version is particularly recommended for summer season products and beginners in Pakistani fragrance studios.
How do I verify purity and detect adulteration in the Pakistan market?+
Three practical field tests provide reasonable verification without laboratory equipment. First, the density test: pure gamma-undecalactone reads 0.950–0.965 g/cm³ at 25°C. DPG-diluted material will show lower density (approximately 0.93 or below). A syringe and calibrated mass scale can measure density adequately. Second, the strip persistence test: apply one drop of undiluted material to a plain white fragrance strip and evaluate at 1 hour, 6 hours, and 24 hours. Authentic material retains its creamy-peach character for 24+ hours; inferior substitutes or heavily diluted material fades to generic fatty notes within 4–6 hours. Third, the refractive index check: pure material reads 1.438–1.448 at 20°C on a refractometer. Significant deviation indicates substitution or dilution. The most common Pakistan market adulterations are: dilution with DPG (detectable by density); substitution with cheaper gamma-Decalactone C10 (lacks the creamy depth of C14 — identifiable by side-by-side comparison); and blending with low-quality fatty esters. Bio Shop™ Pakistan provides GC Certificate of Analysis on request — always ask for COA when purchasing from any supplier.
How does Aldehyde C14 perform in Pakistan's extreme summer heat?+
Aldehyde C14's low vapour pressure (~0.001 hPa at 25°C) means it diffuses slowly and steadily in heat rather than erupting and exhausting rapidly like lighter citrus or aldehydic materials. In Lahore summer heat (42–45°C), a properly dosed attar (0.3–1% in compound) performs well throughout the day — the heat accelerates release of lighter top notes above C14 in the pyramid, which actually increases C14's perceived prominence as composition unfolds. Chemically, the compound is stable at any temperature encountered in Pakistani conditions — there is no quality degradation risk at 45°C during wear or transit. Storage is a separate concern: prolonged storage above 40°C accelerates oxidation and reduces shelf life (see storage section). For summer season product development, keep total compound loading in the final attar below 10–15% to avoid overwhelming sweetness in extreme heat. The 10% DPG version is recommended for summer season products to facilitate precise low dosing and prevent accidental overdosing in hot weather where olfactory evaluation can be temporarily distorted.
Is Aldehyde C14 safe for soap and body care? Any EU export concerns?+
For Pakistan domestic market products: no regulatory concerns whatsoever. Continue using Aldehyde C14 freely within IFRA guidelines (which impose no limits). For body lotion and skin care (pH 4.5–6.5), stability is excellent at normal usage levels. For bar soap (pH 9–10.5), the alkaline environment may cause partial lactone ring-opening over the product's cure period — add compound after cooling to below 50°C and accept some character reduction over shelf life. In liquid soap (pH 5.5–7), stability is significantly better. For EU or UK export products: no allergen declaration is required (gamma-undecalactone is not EU-listed), and IFRA imposes no restrictions. Ensure you hold batch-specific GC documentation for EU-export product files. The compound's clean regulatory profile — IFRA unrestricted, not EU allergen-listed, not SVHC — makes it an excellent choice for both domestic and international market formulations without any compliance complications.
Which Pakistani consumer segments respond best to Aldehyde C14 compositions?+
Three primary Pakistani consumer segments show the strongest positive response. First: young urban women aged 18–35 in Lahore and Karachi, who are most receptive to sweet, fruity-floral compositions and respond very positively to peach-led accords in roll-on attar format — particularly those with cultural names evoking Hunza khubani or Swat sheftalu. Second: bridal and occasion fragrance buyers, who prize the richness and longevity of peachy-oriental attar compositions for weddings, mehndi, and Eid gatherings — the lactonic warmth reads as "luxurious" and "festive" in this context. Third: the household fragrance segment, where peachy-warm home fragrance oils and bakhoor blends are growing rapidly, particularly for the Ramadan and Eid season where warm, welcoming ambient scents are culturally valued. Summer product launches (April–July) are particularly opportune, aligning with the fresh fruit market associations of the note. Regional nuance: Lahore prefers peach + rose + sandalwood; Karachi prefers peach + tropical + musk; the Hunza/Karakoram region has strong cultural attachment to the khubani (apricot) note specifically.
What Urdu brand names work well for Aldehyde C14-based products?+
Recommended Urdu brand names with strong cultural resonance for Aldehyde C14-forward compositions: Hunza Khubani (حنزہ خوبانی) — Hunza Apricot, evoking the world-famous sweet apricots of Pakistan's northern valleys and carrying connotations of purity and longevity; Swat Sheftalu (سوات شفتالو) — Swat Peach, referencing the rich summer peach orchards of Swat Valley; Aarou Ki Bahaar (آڑو کی بہار) — Peach Blossom, for spring-themed launches and bridal fragrances; Khubani Attar (خوبانی عطر) — Apricot Attar, a direct, clear name for traditional market positioning; Sheftalu Bloom (شفتالو بلوم) — for modern urban female EDP positioning. Seasonal timing: April–July summer launches aligned with fresh fruit harvest season in Pakistan's northern valleys carry maximum cultural resonance. Islamic context: while there is no specific Quranic or Prophetic reference to peach specifically, the fruit tradition of the Mughal court and the broader Islamic aromatic culture's embrace of stone fruit aromas provides a strong cultural foundation for positioning these compositions within Pakistan's aromatic heritage.
Everything on this page and substantially more — complete free-radical synthesis chemistry with reaction mechanism diagrams, full stereoisomer analysis of (R) and (S) enantiomers with relative odour potency data, detailed OR5A1 receptor binding science, historical Persicol base formulation analysis, a complete comparison of seven related lactone homologues, EU REACH registration data, MSDS technical specifications, advanced Pakistani market segmentation with three product concepts (Hunza Khubani Attar, Sheftalu Bloom EDP, Khubani Body Lotion), South Asian and Islamic aromatic heritage of stone fruit scenting, Mitsouko and the fruity-chypre tradition, and a comprehensive glossary of 18 key lactone chemistry terms — all compiled in one complete reference document.
