The pineapple molecule — a comprehensive scientific, olfactory and formulation reference covering the aliphatic ester chemistry, FEMA GRAS 2032 status, IFRA Specification Standard, halal synthesis verification, Pakistani tropical attar applications, and three complete accord formulas for DPG attar, EDP, and body wash.
Clear, colourless to pale-yellow mobile liquid · Density 0.887 g/mL · RI 1.422–1.426 at 20°C
Flash Point / Solubility
74°C (Closed Cup) · Soluble in ethanol, fixed oils; insoluble in water and propylene glycol
Log P / Boiling Point
Log P ~2.9 (moderate lipophilicity) BP 185–188°C (760 mmHg); 75–76°C at 15 mmHg
IFRA Status
Specification Standard — NOT a use restriction; requires free allyl alcohol <0.1% w/w in finished ester. No quantitative use-level limit in any category.
Halal Status
✓ Halal — 100% synthetic from hexanoic acid (petrochemical or plant-derived) + allyl alcohol. No animal inputs, no ethanol content in finished product.
Odour Profile
Vivid pineapple · Juicy tropical · Rum-arak nuance · Fatty-ethereal · Fresh ananas · Ananas (اناناس) — the definitive pineapple molecule in the perfumer's palette
Odour Threshold
~5 ppb in water — highly potent fruity ester. At 1% in compound = approximately 10,000× the detection threshold. Cost-effective tropical impact at very low doses.
EU Allergen (2023)
✓ NOT listed — Aldehyde C19 is absent from EU Cosmetics Regulation 1223/2009 Annex III allergen list. No mandatory allergen declaration required.
FEMA GRAS
✓ FEMA 2032 — permitted as food flavouring. JECFA-evaluated; ADI up to 0.13 mg/kg body weight/day. Dual-use fragrance and flavour ingredient.
Typical Use Level
Fine fragrance / attar: 0.5–2% · Personal care: 0.1–0.5% leave-on · Rinse-off: 0.5–2% · Home fragrance / soap: 1–3% · Air care: 3–5%
Shelf Life (sealed)
2 years below 25°C, away from UV and oxygen. Refrigerate during Karachi and Lahore summers. Minimise headspace; fill containers fully.
Introduction
Ananas — The Pineapple Molecule
Aldehyde C19 — commercially known as Allyl Hexanoate or Allyl Caproate — is one of the most immediately recognisable single molecules in modern perfumery, distilling an entire tropical fruit into a transparent, luminous burst of pineapple freshness. Despite its misleading trade name, it contains no aldehyde group: it is a clean aliphatic ester formed from hexanoic acid (caproic acid) and allyl alcohol. The "C19" designation originates from the historic fragrance industry numbering system for fatty acid derivatives, not from any aldehyde chemistry. Steffen Arctander, writing in 1969, described it precisely: "a slightly pungent, fatty-fruity odour reminiscent of Pineapple, Rum, Arak, remotely of Peach" — words that remain perfectly accurate today. Its natural occurrence in fresh pineapple (Ananas comosus), baked potato, passion fruit, guava, and apricot (prunus armeniaca, grown in Pakistan) confirms it as an authentic fruit-scent molecule, not an artificial approximation.
For Pakistani perfumers, Aldehyde C19 represents a magnificent opportunity to capture the enthusiasm of the country's growing urban middle class for contemporary tropical and fruity Oriental compositions. A single well-dosed droplet can lift a classic chameli attar into something fresh and marketable to a younger generation, or transform a gulab accord into a juicy floral-fruity composition competitive with international brands. Jean-Claude Elléna, in his celebrated book Diary of a Nose, endorsed the Aldehyde C19 + Ethyl Maltol combination as the essential backbone of a convincing pineapple accord — a pairing that Pakistani formulators can deploy with equal power. Pakistan's own seasonal culture of fresh tropical fruit — ananas and guava from Sindh and Punjab orchards — gives this fragrance character deep local resonance as well as global appeal.
Bio Shop™ Pakistan — Sourcing Note
Bio Shop™ Pakistan stocks Aldehyde C19 in two formats: Pure (≥98% GC) — the same perfumery-grade specification used by international fragrance houses, sourced from vetted Chinese manufacturers with GC certificates of analysis, RI, and free allyl alcohol documentation — and 10% in DPG for micro-measurement convenience. Pure: bioshop.pk/products/aldehyde-c19-allyl-hexanoate-1 · 10% DPG: bioshop.pk/products/aldehyde-c-19-10-in-dpg
Aldehyde C19 is available in several grades and dilutions. Understanding the differences is critical for Pakistani formulators to ensure accurate formulation, avoid adulteration, and match cost to application. Bio Shop™ Pakistan stocks the professional Pure grade and the 10% DPG dilution — both GC-certified.
RI 1.422–1.426 · Density 0.885–0.890 g/mL · Free allyl alcohol <0.1%
"The professional standard. Use for all formula levels ≥0.5% in compound — virtually all fine fragrance and attar work. Most cost-effective option. Clear, mobile liquid at room temperature. Vivid pineapple opening with rum and ethereal nuance on blotter."
Best for: sub-0.5% formula levels, micro-batches, trace additions
"Ideal for micro-batching and trace-level work. 1g of 10% solution = 0.1g active Aldehyde C19. If your formula calls for 0.05% in 500g compound (0.25g active), weigh 2.5g of this solution. Critical: dissolve in ethanol or oil phase first — not miscible with water or neat DPG."
Food & Flavour Grade · Dual-Use
Food Grade FCC / FEMA
FEMA 2032 · JECFA-evaluated · Identical to or superior to perfumery grade
"Chemically identical to perfumery grade — often dual-certified. JECFA ADI: up to 0.13 mg/kg body weight/day. FEMA 2032 permits use in chewing gum up to 210 mg/kg, confectionery to 32 mg/kg, baked goods to 25 mg/kg. Fragrance and flavour applications both viable."
⚠ Avoid Without Verification
Adulterated / Unknown
Pakistan grey market · Ethyl hexanoate · DPG-diluted without disclosure
Actual Allyl Hexanoate Content
Unknown
RI out of range: ethyl hexanoate reads 1.408–1.412 (lower)
"Common Pakistan adulterants: ethyl hexanoate (banana-like, not pineapple; RI noticeably lower); methyl hexanoate (solvent-like); DPG dilution without disclosure. Field test: RI must be 1.422–1.426. Blotter at 1% in DPG: unmistakable sharp pineapple with rum nuance — not banana, not solvent."
Dosage Science
Concentration Behaviour
Aldehyde C19 behaves distinctly at different usage levels — from an invisible juicy freshness booster at trace levels to an intensely penetrating tropical character at high doses. Understanding this concentration-dependent behaviour is essential for Pakistani formulation, particularly given that Pakistan's summer heat accelerates evaporation of this volatile top-note ester, requiring dose adjustment for outdoor and warmer-climate applications.
<0.1% in CompoundSub-Threshold Lift
Below individual perceptibility for most noses; adds a subtle juicy freshness and sparkle to floral or citrus accords without announcing a tropical character. Sophisticated use: adds ripe, voluptuous quality to rose or jasmine accords. Best: floral-fruity compositions, chypre modernisation, feminine citrus accords where overt tropical is not desired.
0.1–0.5% in CompoundGentle Tropical Suggestion
Gentle pineapple suggestion detectable by trained noses; juicy-fresh nuance; classic "attar moderniser" level — adds contemporary freshness to traditional oud-rose-sandal structures without disturbing them. Best: chameli attar lift, summer cologne freshness, feminine EDP top note complement. Pakistani attar modernisation at its most elegant.
0.5–2% in CompoundClear Pineapple Character
Clear, vivid pineapple note; rum and fatty warmth emerge; the classic "professional top-note range." The pineapple identity is unmistakable and drives the opening impression of the composition. Pairs spectacularly with Ethyl Maltol (Elléna's endorsed combination). Best: tropical fine fragrance EDP, fruity-Oriental attar, modern Pakistani youth fragrance. Standard for fine fragrance formulation.
2–5% in CompoundStrong Tropical Intensity
Strong, slightly penetrating tropical character; rum and arak facets become pronounced; suitable for applications where the fragrance must diffuse through lather or aerosol action. In Lahore summer heat at 40°C, the 2% level in a soap or shower gel provides the pineapple top note that 0.5% in an EDP would deliver at 20°C. Best: bar soap, laundry detergent, shower gel, room spray, candle.
5–10% in CompoundVery Intense / Industrial
Very intense tropical character; solvent-adjacent facets begin to emerge; overwhelms other notes at this concentration. In air freshener concentrates, candle fragrance, and industrial detergent this level may be appropriate since actual dose to atmosphere is greatly reduced. Not recommended for skin-contact fine fragrance. Use caution.
10%+ in CompoundNot Recommended
Overwhelming; medicinal and fatty off-notes dominate; not suitable for consumer products. Research and reference standards only. Note: acute oral LD50 is 218–393 mg/kg — higher concentrations require careful handling with nitrile gloves and eye protection. Never use at this level in any skin-contact or consumer product.
Sensory Analysis
Olfactory Evolution
Top Note · 0–30 min
Vivid Pineapple
Aldehyde C19 detonates immediately on application — its relatively low molecular weight (156 g/mol) and moderate vapour pressure ensure it is among the first notes to reach the olfactory epithelium. The opening is unmistakably pineapple: bright, juicy, luminous. Within the first five minutes the rum and arak facets emerge, adding an almost intoxicating tropical warmth. Steffen Arctander's 1969 description still holds perfectly: "pineapple, rum, arak, remotely of peach." In Pakistan's summer heat (Lahore 40–42°C, Karachi 38–40°C), this top-note phase is compressed to approximately 5–15 minutes on exposed skin — compensate by increasing dose slightly and anchoring with Benzyl Acetate or Isoamyl Salicylate.
Heart Modifier · 30 min – 2 hr
Rum & Floral Warmth
As the sharp pineapple top fades, a more rounded, fatty-fruity warmth emerges. The rum-arak facets become more prominent, and if floral co-ingredients are present (jasmine, rose, Hedione), Aldehyde C19's residual acts as a juicy enhancer that makes florals smell more radiant and alive. Jean-Claude Elléna documented this phase in his formulation notes — the Aldehyde C19 at 1% continues to provide a fruity-juicy underpinning to the heart notes even after its initial pineapple burst has faded. On fabric and in room diffusion, this heart phase is extended — the pineapple softens to a pleasant tropical sweetness persisting for several hours.
Late Dry-Down · 2–4 hr
Fatty Tropical Fade
In the later dry-down, Aldehyde C19 contributes a subtle, almost imperceptible fatty-sweet warmth that deepens the base. This stage is the "ghost" of the pineapple — not identifiable as tropical anymore, but providing a faint richness to the overall dry-down. Pakistani attar formulators who want the pineapple to carry through beyond the first 30 minutes should anchor it with Benzyl Acetate (2–4%) and Ethyl Maltol (0.3–0.8%), which together extend the perceived pineapple duration significantly. The Elléna-recommended Aldehyde C19 + Ethyl Maltol pairing specifically addresses this longevity challenge.
Fabric / Ambient · 4–12 hr
Laundry Tropical Sweetness
On fabric, Aldehyde C19 shows marginally better retention than on skin through hydrophobic interaction with textile fibres. In laundry and detergent applications, a pleasant tropical sweetness — not recognisably pineapple but clean and fresh-fruity — persists through the day. In candle and home fragrance applications, the ambient diffusion rate creates a sustained tropical impression across a room for 4–6 hours. In Karachi's humid coastal climate, this ambient diffusion is enhanced — humidity particles carry the volatile ester more effectively through interior spaces, which is why tropical fragrances in home care products feel particularly vivid in Karachi's home environments.
Three production-ready formulas directly from the Bio Shop™ Pakistan reference document — exact weights, exact percentages. All ingredients available at bioshop.pk. Formula 1 is a DPG attar (no alcohol — halal for all markets). Formula 2 is an EDP compound using Perfume Premix as the sole alcohol base. Formula 3 is a tropical shower gel fragrance compound.
Ananas Sharif · اناناس شریف
Noble Pineapple Attar · DPG-based, no alcohol · 100g batch · Roll-on dabba or gift set
Dissolve Ethyl Maltol and Coumarin in half the DPG at 40°C until clear. Add all liquid aroma chemicals at room temperature. Add remaining DPG. Stir gently; filter; bottle in amber glass. Mature 3–7 days sealed, cool, dark before QC evaluation. Longevity: 4–6 hours on skin. Target: urban millennial Pakistan, Eid and wedding gifting, Gulf export attar.
Tropical Breeze EDP · گرمیوں کی خوشبو
Modern Spray EDP Compound · Perfume Premix base · 100g compound · Unisex-modern · Urban Pakistan youth 18–35
Add this compound at 4% into SLES/Cocoamide DEA surfactant base. Adjust pH to 5.5–6.5. Pre-disperse compound in small quantity of surfactant first. Add NaCl to viscosity. Performance: vivid pineapple on lather; clean tropical after rinse. PKR retail: 250–450 per 200ml. EU allergen: D-Limonene declare above 0.01% in rinse-off. Pakistan domestic: no restriction.
Synergies
Classic Pairings
Aldehyde C19 is compatible with essentially all fragrance materials. The following pairings represent the most commercially successful and culturally relevant combinations for Pakistani formulation, drawn directly from docx reference data and Arctander/Elléna industry references. Ratios shown are in fragrance compound percentages.
Allyl Ester · Cyclohexyl ring · IFRA Specification Standard
Aroma vs. Aldehyde C19
More floral and rounded pineapple; less rum-arak nuance; softer, rounder tropical character
IFRA / EU Allergen
✓ Specification Standard only · Not EU allergen-listed · Same allyl alcohol <0.1% rule
Use with Aldehyde C19
Excellent blend: Aldehyde C19 for direct pineapple identity + ACHP for floral-fruity roundness
Pakistan Application
Preferred when the composition targets feminine floral-pineapple; less "sharp fruit", more "fruit blossom"
Verdict: Best companion for a rounder, more feminine tropical accord. Blend at 1:1 with Aldehyde C19 for a fuller, multi-dimensional pineapple. Available at bioshop.pk/products/achp-allyl-cyclohexyl-propionate
More banana and tutti-frutti; less distinctly pineapple; rounder and sweeter; no rum facet
IFRA / EU Allergen
✓ No restriction · Not allergen-listed · Better alkaline stability than allyl esters
Use with Aldehyde C19
Add 0.1–0.3% Ethyl Butyrate to an Aldehyde C19 pineapple accord for banana-tropical depth
Pakistan Application
Better choice for high-pH soap formulation where allyl ester hydrolysis is a concern; fruity-sweet
Verdict: Strategic complement, not direct substitute. Adds banana sweetness to Aldehyde C19's rum-pineapple — together they create a more complex tropical fruit accord. Prefer Ethyl Butyrate for alkaline soap bases.
D-Limonene
Monoterpene · Citrus · IFRA restricted in some categories
Aroma vs. Aldehyde C19
Lemon-orange citrus, not pineapple; bright, clean, sparkling — the "sun" to Aldehyde C19's "fruit"
IFRA / EU Allergen
⚠ IFRA restricted (some categories) · EU allergen — declare above 0.01% in rinse-off
Standard summer cologne freshness partner; drives the "sunshine" impression; check EU allergen limits for export
Verdict: Synergist, not substitute. The D-Limonene + Aldehyde C19 combination is the industry standard for tropical freshness openings — citrus brightness amplifies the pineapple into a full "tropical punch." Available at bioshop.pk/products/d-limonene
Allyl Amyl Glycolate (AAG)
Allyl Ester · Glycolate type · Green-pineapple character · IFRA Spec
Aroma vs. Aldehyde C19
Greener, more ethereal pineapple-apple; less rum; airier and more crystalline than C19's juicy tropical
IFRA / EU Allergen
✓ Specification Standard only · ~1 ppb odour threshold (more potent than C19) · Not EU allergen-listed
Excellent moderniser for floral-chypre structures; adds green-fruity lift; use carefully — extremely potent
Verdict: Choose AAG for a greener, more ethereal tropical freshness. In combination, AAG adds the "wet cut pineapple" dewy quality that Aldehyde C19 alone lacks. Both are allyl esters — ensure both conform to the <0.1% allyl alcohol specification.
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 — Specification Standard Only
Under IFRA's 51st Amendment, Aldehyde C19 (Allyl Hexanoate) is governed by the Specification Standard for Allyl Esters — NOT a quantitative use-level restriction. The sole requirement is that the free allyl alcohol content in the finished ester must be less than 0.1% by weight. This is a quality purity standard, not a concentration limit. Provided Bio Shop™ Pakistan material meets the allyl alcohol specification (confirmed by GC analysis), formulators may use Aldehyde C19 at any concentration appropriate to their formulation requirements. No category-specific limits apply in fine fragrance, attar, or EDP.
✅
FEMA GRAS 2032 — Food-Grade Approved
Aldehyde C19 carries FEMA GRAS status (FEMA 2032), confirming its safe use as a food flavouring agent. JECFA-evaluated with an ADI of up to 0.13 mg/kg body weight per day. Permitted in chewing gum (up to 210 mg/kg), confectionery (32 mg/kg), baked goods (25 mg/kg), and cold drinks (11 mg/kg). FDA-permitted under 21 CFR Part 172. This dual fragrance and food-grade status confirms the material's safety profile — it is among the most thoroughly safety-assessed fruity aroma chemicals in commercial use.
✓
EU Allergen — Not Listed
Aldehyde C19 is absent from Annex II (prohibited) and Annex III (restricted) of EU Cosmetics Regulation 1223/2009, except for the allyl alcohol specification. It is not on the current 26-allergen mandatory declaration list nor on any proposed expanded allergen list under SCCS review. No mandatory allergen declaration is required in EU cosmetic ingredient lists based solely on the presence of allyl hexanoate. This is a significant commercial advantage over some other popular fruity esters and terpenoids. For EU-export Pakistani products, no allergen labelling is needed for this specific ingredient.
⚠️
Human Safety — Handle Pure Material with Care
Acute oral LD₅₀ is 218–393 mg/kg (rat) — classified as Toxic category; pure material should be handled with nitrile gloves and eye protection. Acute dermal LD₅₀ approximately 300 mg/kg. Mild irritant in pure form; negligible at fragrance use levels below 2%. Not classified as a skin sensitiser per RIFM/ECHA data. Eye irritant (reversible at 24h). In vitro micronucleus test negative — no genotoxic concern. Not carcinogenic under current IARC/NTP/EU data. At fragrance application doses, exposure is well below the Cramer Class III Threshold of Toxicological Concern.
🚫
Alkaline Instability — Avoid in Soap Bases
Aldehyde C19's ester bond is susceptible to alkaline saponification above pH 9. In cold-process or hot-process soap making (where lye pH is initially 12–14), the ester will partially hydrolyse, releasing hexanoic acid (fatty-rancid smell at high concentrations) and allyl alcohol. If using in bar soap, add at trace stage after initial emulsification, or use in pH-adjusted formulas below pH 9. If soap application is the primary use case, consider Ethyl Butyrate or Benzyl Acetate as more alkali-stable alternatives. In shower gel (pH 5.5–6.5), this is not a concern.
🌊
Environmental — Readily Biodegradable
PEC/PNEC ratio exceeds 1 at screening level — mild aquatic toxicity concern. Unlike the polycyclic musks, Allyl Hexanoate is classified as readily biodegradable, meaning it degrades rapidly in wastewater treatment systems. No bioaccumulation concern at log P 2.9. Not classified as PBT (Persistent, Bioaccumulative, Toxic). Dispose responsibly — do not discharge bulk neat material into Karachi or Lahore drainage systems. In normal fragrance product use, environmental exposure is negligible given the very low doses and ready biodegradability.
Handling & Storage
Storing in Pakistan's Climate
Temperature
Below 25°C ideal; refrigerate during summer if possible. Brief exposure to 45°C accelerates allyl double bond oxidation — minimise. Unlike Galaxolide, Aldehyde C19 does not have a viscosity issue at room temperature; it is always mobile.
Container Type
Amber glass or aluminium with polycone cap. Avoid clear glass (UV) and long-term plastic storage (HDPE acceptable for short-term only). Fill containers fully to minimise headspace oxygen — key for protecting the allyl double bond from autoxidation.
Light Exposure
Strictly avoid direct sunlight and UV. UV initiates radical autoxidation of the allyl C=C double bond, producing epoxides, peroxides, and ultimately rancid-smelling degradation products. Inner room, dark cabinet, or closed box storage required.
Shelf Life (sealed)
2 years sealed at below 25°C. Opened/partially used: 12–18 months. Date bottles on receipt. Signs of degradation: colour darkening to amber, loss of pineapple freshness, emergence of rancid or solvent off-notes. Discard degraded material.
Measuring Technique
Mobile at all temperatures — no warming required. Use precision digital scale (0.01g minimum) for all measurements. For sub-0.5% formula levels, use 10% DPG dilution for accuracy. Never measure by drops — highly variable drop size.
Pre-use Handling
Wear nitrile gloves and eye protection when handling pure material — acute dermal LD₅₀ 300 mg/kg. At formulation use levels (0.5–2% in compound) risk is minimal. Dissolve Ethyl Maltol in DPG or EtOH before combining with Aldehyde C19 for pineapple accords.
Lahore Summer (May–Aug)
July–August Lahore exceeds 42–45°C. Dedicated cool room or air-conditioned storage essential. Aluminium containers with inner liner preferred. Even brief exposure to 45°C+ accelerates oxidation of the allyl double bond. Schedule deliveries for cooler morning hours.
Karachi Coastal (Year-Round)
Primary concern: high humidity (80%+ during monsoon) corroding metal container lids. Use aluminium with polycone or plastic-capped glass. Sealed product is unaffected by humidity. Basement or cool-room storage preferred during April–September when both heat and humidity peak.
⚠ Quality check: Genuine Aldehyde C19 (≥98% GC) is a clear, mobile liquid at room temperature with RI 1.422–1.426. Blotter at 1% in DPG: sharp, vivid pineapple with rum nuance — not banana, not solvent. Ethyl hexanoate (a common adulterant) reads RI 1.408–1.412 and smells more banana-like. Cloudy or milky appearance indicates water contamination. Excessively chemical or acetone-like opening indicates high free allyl alcohol — reject and contact your supplier for GC documentation.
FAQs
Frequently Asked Questions
How do I verify the purity of Aldehyde C19 I have purchased? What adulterants are common in the Pakistani market?+
The most important field quality check is the refractive index (RI). Authentic Aldehyde C19 reads 1.422–1.426 at 20°C on a calibrated refractometer. Values outside this range indicate the wrong ester, dilution, or adulteration. A GC certificate of analysis from the supplier showing ≥98% allyl hexanoate purity and free allyl alcohol <0.1% is the definitive verification document. In Pakistan, common adulterants include: ethyl hexanoate (RI ~1.408–1.412, noticeably lower; smells more banana than pineapple; different ester entirely), DPG-diluted material sold as pure, and propylene glycol dilutions affecting oil-base miscibility. Organoleptic test: genuine Aldehyde C19 at 1% in DPG smells unmistakably of fresh, sharp pineapple with a rum-arak nuance. If it smells like banana or generic "tropical" without that specific rum character — suspect substitution. Always request GC documentation from any Pakistani supplier before ordering bulk quantities. Bio Shop™ Pakistan provides documentation on request.
How should I store Aldehyde C19 in Pakistan's hot and humid climate?+
Pakistan's climate presents real storage challenges due to Aldehyde C19's allyl double bond, which is susceptible to UV-initiated oxidation and heat-accelerated degradation. For Karachi (high humidity, 28–42°C) and Lahore (extreme summer heat, 40–45°C in July): (1) Use amber glass or aluminium containers with tight polycone caps — never clear glass or long-term plastic. (2) Fill containers as full as possible to minimise headspace oxygen, which is the primary oxidation risk for the allyl double bond. (3) Refrigerate below 15°C during summer months if possible — a household refrigerator is adequate. (4) If no refrigeration is available, use a cool, dark cabinet or basement away from windows and heat sources. (5) Date bottles on receipt and use oldest stock first. Shelf life is 2 years sealed at below 25°C; expect 12–18 months in hot summer conditions without cooling. (6) Watch for quality signs: colour darkening, loss of pineapple character, rancid or solvent off-notes signal degradation — discard affected material.
Is Aldehyde C19 halal? What exactly is its synthesis origin?+
Yes — Aldehyde C19 (Allyl Hexanoate) is halal. The synthesis proceeds through Fischer esterification involving only two starting materials: (1) Hexanoic acid (caproic acid) — produced industrially from petrochemical oxidation of hexanol or from fatty acid fractionation of coconut or palm kernel oil (both fully plant-derived); and (2) Allyl alcohol — produced from petroleum-derived propylene via chlorohydrin or Wacker-type processes, or by biobased fermentation routes. Both starting materials are either petrochemical or plant-derived — no porcine, bovine, or other animal-derived ingredients are involved in standard commercial production. The esterification reaction is purely chemical: the allyl alcohol is a reactant that is consumed in forming the ester, not a diluent, and the finished product contains no free ethanol content. The allyl alcohol present as a trace impurity is strictly controlled to <0.1% by IFRA specification. Islamic scholars universally classify synthetic aroma chemicals of this type as halal when used in external (non-ingested) products. Bio Shop™ Pakistan sources from manufacturers who can provide synthesis origin documentation on request.
Should I use pure Aldehyde C19 or the 10% DPG version — and at what percentage?+
Use pure (≥98% GC) for any formula requiring ≥0.5% Aldehyde C19 in compound — which covers virtually all fine fragrance and attar applications. The pure material is the most cost-effective option at these concentrations and is straightforward to weigh on a precision scale. Use the 10% DPG version when: formulating at very low concentrations (<0.5% in compound), working with micro-batches under 100g, or where your scale cannot accurately resolve the small mass of pure material. Key calculation: 1g of 10% DPG solution = 0.1g active Aldehyde C19. If your formula calls for 0.05% in 500g compound (0.25g active), weigh 2.5g of the 10% solution. Always label which version you are using in your formulation records to prevent future dosing errors. The 10% DPG version is not water-miscible; dissolve it in the ethanol or oil phase of your base first. Both formats available at bioshop.pk.
Can I use Aldehyde C19 in high-pH soap? How does it behave in alkaline conditions?+
This is a critical formulation consideration. Aldehyde C19's ester bond undergoes alkaline saponification above pH 9 — the bond cleaves, releasing hexanoic acid (which has a fatty-rancid smell at high concentrations) and allyl alcohol. In cold-process or hot-process soap making where lye-heavy batter pH is initially 12–14, significant hydrolysis will occur. Mitigation strategies: (1) Add Aldehyde C19 at trace stage, after initial emulsification when pH begins to moderate; (2) use a finished bar soap formulation (after saponification is complete) for rebatch or melt-and-pour soap where pH is lower; (3) substitute with ethyl butyrate or benzyl acetate for high-pH applications — both are more alkali-stable. In shower gel and shampoo (pH 5.5–7), Aldehyde C19 is fully stable — no hydrolysis concern at these pH levels. For laundry detergent (pH 8–10), use at higher dose levels to compensate for partial hydrolysis, and expect some aroma modification.
Which Pakistani consumer segments respond best to pineapple-tropical fragrances featuring Aldehyde C19?+
Based on demographic data and market observation, the strongest response comes from: (1) Urban youth aged 18–30 in Karachi (DHA, Clifton), Lahore (Gulberg, Model Town), and Islamabad (F-6 to F-11) — familiar with global fruity-fresh fragrance trends through social media and expatriate family connections; (2) Summer gifting occasions — Eid al-Fitr and Eid al-Adha gift sets, where fresh tropical scents are perceived as modern and appropriate; (3) Pakistani diaspora returning from Gulf countries — familiar with tropical fruity profiles popular in UAE and Saudi markets; (4) Women's personal care consumers seeking tropical fruit notes in shower gel, shampoo, and body lotion at mass-market price points; (5) Online fragrance communities on Instagram and TikTok, which respond very positively to innovative tropical compositions. Regional insight: Karachi consumers prefer lighter, fresh tropical-citrus structures due to the coastal climate; Lahore consumers prefer richer pineapple-sandal Oriental hybrids. Seasonal peak: strongest May–August (summer); gifting peaks at Eid seasons.
How does Aldehyde C19 perform in Pakistan's extreme heat, and what Urdu names can I use for pineapple products?+
At Pakistani summer temperatures of 38–45°C, Aldehyde C19 volatilises significantly faster than at a European 20°C room temperature. The pineapple opening on exposed skin may last only 5–10 minutes in direct summer sun versus 20–30 minutes in an air-conditioned environment. Compensate by: increasing dose from 1% to 1.5%, anchoring with slower-evaporating fruity materials like Benzyl Acetate (2–4%) and Isoamyl Salicylate, and positioning as an indoor or reapplication-friendly summer product. For Urdu brand names, use: Ananas Sharif (اناناس شریف — Noble Pineapple), Mausam Ka Phal (موسم کا پھل — Fruit of the Season), Ananas Ki Khushbu (اناناس کی خوشبو — Fragrance of Pineapple), Bahar Ka Attar (بہار کا عطر — Spring Attar), or Ananas Garmion (اناناس گرمیوں — Summer Pineapple). The pineapple carries cultural resonance from the Mughal era when ananas was depicted in royal garden miniature paintings as a prized exotic fruit — connecting a modern fragrance molecule to deep South Asian cultural memory.
How do I source Aldehyde C19 from Bio Shop™ Pakistan? What quality standard does it meet?+
Bio Shop™ Pakistan stocks Aldehyde C19 in two formats: Pure (≥98% GC, perfumery grade) and 10% in DPG dilution. Both are sourced from verified Chinese manufacturers with GC certificates of analysis confirming purity, refractive index, and free allyl alcohol content below the IFRA specification. The material conforms to: FCC (Food Chemicals Codex) specifications; IFRA Specification Standard for Allyl Esters (free allyl alcohol <0.1%); standard perfumery-grade quality parameters. Order pure material at bioshop.pk/products/aldehyde-c19-allyl-hexanoate-1 and the 10% DPG dilution at bioshop.pk/products/aldehyde-c-19-10-in-dpg. Bio Shop™ Pakistan ships to all major Pakistani cities including Karachi, Lahore, Islamabad, Rawalpindi, Peshawar, and Faisalabad. SDS and CoA documentation available on request. Pricing is competitive and accessible to both artisan attar makers and industrial fragrance compounders. Contact through bioshop.pk for large wholesale quantities.
Everything on this page and substantially more — complete Fischer esterification reaction mechanism with yield optimisation data, full structure-odour relationship analysis for the allyl ester homologue series (C4 through C8), JECFA toxicological evaluation summary, RIFM safety assessment details, complete aquatic fate and biodegradation data, full blending strategies chapter with six documented pairings, historic fragrance appearances from Arctander's catalogue (Miss Dior 1947, Cabochard 1959, Diorissimo 1956), Jean-Claude Elléna's exact formulation notes from Diary of a Nose, Mughal cultural context, three product concept briefs for the Pakistan market, and a 25-term glossary of key aroma chemistry terminology — all compiled in one complete reference document.
