Hedirosa: A Radiant Citrus–Floral Molecule Bringing Natural Freshness to Modern Perfumery

Galbora
Nov 14
2 min read

I. Introduction — The Art of Fresh Radiance

In contemporary perfumery, where freshness must feel natural, luminous, and effortlessly diffusive, Hedirosa emerges as one of the most versatile modern aroma molecules.With its sparkling citrus–floral character, vibrant grapefruit brightness, and a signature rhubarb-like crispness, Hedirosa rebuilds freshness in compositions without turning sharp or synthetic.

Although it does not occur in nature, its sensory impact feels remarkably natural, making it a favorite for perfumers seeking clean radiance, airy citrus movement, and a fresh-cut floral impression.

II. Chemical Identity — The Structure Behind the Sparkle

Chemical Name: (4S)-4,8-Dimethyl-7-nonen-2-ol

Formula: C₁₁H₂₂O

Molecular Weight: 170.30

CAS No.: 40596-76-7

Purity: 98% min (as Hedirosa)

Appearance: Colorless liquid

Flash Point: 102 °C

Vapor Pressure: 1.59 Pa at 25 °C

ISO 16128:Over 75% – Readily biodegradable

This chiral alcohol carries a bright citrus opening, a floral heart, and a delicate fruity edge, offering both sophistication and clarity.

III. Olfactory Profile — Freshness with Volume and Light

Hedirosa is defined by its:

Citrus lift — sparkling, juicy, and modern
Floral radiance — soft, airy petals with natural transparency
Grapefruit nuance — tart, crisp, energizing
Rhubarb tone — green, fruity–acidic, refreshing
Clean citrus–floral harmony — perfect for rebalancing compositions

Its diffusive bloom gives immediate impact, making the top notes brighter while supporting the transition into the heart.

IV. Performance & Stability — Built for Modern Formulations

Hedirosa exhibits strong stability across diverse applications, enabling perfumers to use it in both high-end fine fragrances and functional products.

Stability

Fine Fragrance: Good
Fabric Softener (pH 3): Good
Antiperspirants (pH 3.5): Good
Toiletries (pH 6): Good
Liquid Detergent (pH 9): Good
Soap (pH 10): Good
Powder Detergent (pH 11): Good
Bleach (pH 14): Poor

Substantivity

Skin: Good
Dry Fabric: Fair
Wet Fabric: Good
Hair: Good

Tenacity on Blotter

> 24 hours, giving freshness longevity without aggressiveness.

Bloom

Diffusive — ideal for bright openings and airy floral blends.

V. Applications — A Universal Freshness Booster (0.1–3%)

At levels of 0.1–3%, Hedirosa adds:

Natural freshness
Citrus–fruity sparkle
Floral clarity
Grapefruit–rhubarb lift

Perfect for:

Fine fragrances
Haircare & body products
Antiperspirants
Fabric conditioners
Detergents
Air care formulations

Its biodegradability and high purity make it suitable for modern clean-label compositions.

VI. Why Perfumers Choose Hedirosa

Creates a natural, bright freshness without metallic harshness
Adds clarity and lift to floral hearts
Enhances citrus accords with fruit–green modernity
Works beautifully with:
- Neroli
- Citron & Grapefruit oils
- Rhubarb notes
- Aldehydes
- Rose and airy petal notes
- Musks & modern clean woods