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Fragrance ingredients Pollenal II
Molecular structure of Pollenal II, showcasing its chemical formula, used in perfumery for its high-impact fresh and green olfactory properties. Image 1 of 2
Molecular structure of Pollenal II, showcasing its chemical formula, used in perfumery for its high-impact fresh and green olfactory properties.
Pollenal II perfume ingredient in a clear vial on a marble surface Image 2 of 2
Pollenal II perfume ingredient in a clear vial on a marble surface
Molecular structure of Pollenal II, showcasing its chemical formula, used in perfumery for its high-impact fresh and green olfactory properties.
Pollenal II perfume ingredient in a clear vial on a marble surface

Pollenal II

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Premium Synthetic Ingredient for Perfumery

Pollenal II is a high-impact synthetic aroma chemical introduced by Kao Specialties at the World Perfumery Congress (WPC) 2018. Structurally a branched aliphatic aldehyde, Pollenal II delivers a complex green note with fresh mentholic top, fig-fruity transition, and dirty-powdery undertone, offering no direct natural analog. It is designed to impart pollen-like freshness, intensity, and a highly diffusive opening in citrus, floral, and green-fruity compositions. With excellent stability across pH ranges and application types, it functions as both a top note booster and structural modifier.

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Premium Synthetic Ingredient for Perfumery

Pollenal II is a high-impact synthetic aroma chemical introduced by Kao Specialties at the World Perfumery Congress (WPC) 2018. Structurally a branched aliphatic aldehyde, Pollenal II delivers a complex green note with fresh mentholic top, fig-fruity transition, and dirty-powdery undertone, offering no direct natural analog. It is designed to impart pollen-like freshness, intensity, and a highly diffusive opening in citrus, floral, and green-fruity compositions. With excellent stability across pH ranges and application types, it functions as both a top note booster and structural modifier.

Premium Synthetic Ingredient for Perfumery

Pollenal II is a high-impact synthetic aroma chemical introduced by Kao Specialties at the World Perfumery Congress (WPC) 2018. Structurally a branched aliphatic aldehyde, Pollenal II delivers a complex green note with fresh mentholic top, fig-fruity transition, and dirty-powdery undertone, offering no direct natural analog. It is designed to impart pollen-like freshness, intensity, and a highly diffusive opening in citrus, floral, and green-fruity compositions. With excellent stability across pH ranges and application types, it functions as both a top note booster and structural modifier.

Synthetic Ingredient Overview

  • 🏭 Manufacturer: Kao Chemicals (Specialties Division)

  • 🔎 Chemical Name: 2-Cyclohexylpropanal

  • 🧪 Synonyms: Pollenal II

  • 🧬 Chemical Formula: C₉H₁₆O

  • 📂 CAS N°: 2109-22-0

  • ⚖️ Molecular Weight: 140.22 g/mol

  • 📝 Odor Type: Fresh Green

  • 📈 Odor Strength: High impact (top), medium tenacity (~5 hours on blotter)

  • 👃🏼 Odor Profile: Menthol-cineol freshness; pollen effect; dirty/powdery nuance; aggressive green heart; fruity fig-like drydown

  • 👅 Flavor Profile: Not applicable

  • ⚗️ Uses: Green modifier, fig and apple enhancement, citrus lift, aldehydic florals

  • 🧴 Appearance: Clear liquid

What is Pollenal II?

Pollenal II is a branched aliphatic aldehyde synthesized to mimic the olfactive complexity of fresh pollen and aggressive green materials, although no direct natural analog exists. Its fresh-camphoraceous top note is reminiscent of menthol and cineol, which rapidly evolves toward a fruity-green fig tone, passing through a powdery, earthy intermediate.

Its dynamic evaporation behavior, lasting structure, and adaptability make it suitable as a volatile top modifier as well as a structural element in citrus, tea, and floral applications.

Olfactory Profile & Perfumery Applications

👃🏼 Scent Description:

  • Top: Sharp, diffusive menthol/cineol freshness

  • Heart: Pollen-like yellow floral, powdery-dirty aldehydic effect

  • Drydown: Fruity fig nuance with lingering green sharpness

⚗️ Functional Roles:

  • Adds naturalistic sharpness and floral pollen-like effect to aldehydic or citrus perfumes

  • Used in tea, green floral, fig-fruity, or herbal-camphoraceous themes

  • Boosts volume and radiance in top and mid-phases

  • Compatible with rose oxide, green leaf alcohols, aldehyde C-10, and dihydromyrcenol

🧴 Example Pairings:

  • Citrus boosters:

    • Aldehyde C-10 + Pollenal (2:1) → orange aldehyde sharpness

    • Dimethyloctenone + Pollenal (1:1) → fresh mandarin accord

    • Dihydromyrcenol + Pollenal (10:1) → icy floral lift

  • Fruity modulations:

    • Verdox + Pollenal (10:1) → sweet red apple

    • Diethyl Malonate + Pollenal (5:1) → juicy apple

  • Green structure:

    • Rose oxide + Pollenal (1:2) → petal-green accent

    • Triplal + Pollenal (2:1) → watery-green note

    • Cis-3-Hexen-1-ol + Pollenal (1:2) → green tea effect

Industrial & Technical Uses

  • Fine fragrance: Used in aldehydic florals, fig compositions, fresh citrus, and modern green florals

  • Functional perfumery: Strong performance in haircare, soaps, detergents, and softeners

  • Not used in flavor: No FEMA listing; not approved for food use

Stability Overview

📦 Physical Format: Clear, non-discoloring liquid
✅ Excellent stability in formulations (including high-pH and warm-temperature systems):

  • Shampoo (pH 6) to 40°C

  • Detergent (pH 10) to 40°C

  • Soap (pH 9) to 30°C

  • Softener (pH 6–9) to 40°C
    🟡 Moderate stability:

  • Soap (pH 9) to 50°C

  • Softener (pH 9) to 50°C

Regulatory & Safety Overview

  • IFRA: Not restricted under the 51st Amendment

  • EU Allergens: Not one of the 26 declarable allergens

  • FEMA GRAS: Not listed

  • ECHA (REACH): Registered under 2-Cyclohexylpropanal; not classified as hazardous

  • Toxicology:

    • No phototoxicity or sensitization at standard perfumery concentrations

    • Biodegradable under OECD screening; not classified as PBT or vPvB

    • Low volatility; stable under manufacturing and packaging conditions

✅ Considered safe and effective in fine fragrance and functional fragrance applications.


Sources

  • Kao Chemicals Technical Datasheet – WPC 2018 (Nice, France)

  • PubChem Compound Summary for CID 95560

  • Fulvio Ciccolo – Pollenal II Evaluation Session with Kao Perfumer Pelegri Granel (2018)

  • Internal formulation archive (Scentspiracy 2023)

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