Hydratropic Aldehyde
CAS: 93-53-8
HeartFloral
Identifiers
Manufacturer
—
CAS number
93-53-8
CAS (all sources)
93-53-8
CAS (Perfumiarz)
—
CAS (PerfumersWorld)
93-53-8
CAS (FraterWork)
93-53-8
CAS (EU Hekserij)
—
CAS (TSCA Hekserij)
—
INCI name (FraterWork)
2-PHENYLPROPIONALDEHYDE
IUPAC name (FraterWork)
2-phenylpropanal
INCI (Hekserij)
—
EC number (Hekserij)
—
FEMA (Hekserij)
—
UN number
—
Synonyms (PerfumersWorld)
Hydratropic aldehyde : alpha Methyl phenylacetaldehyde : alpha-Phenylpropionaldehyde : 2-Phenylpropanal : Hyacinthal : Sylvanal : alpha-Methyltolualdehyde : Ecorsal : Vert de Fleurs :
Synonyms (FraterWork)
2-Phenyl Propionaldehyde
Scent profile
Note type (FraterWork)
Heart Note
Odour family (FraterWork)
Floral
Odour profile (FraterWork)
Hydratropic aldehyde delivers a powerful green-earthy foliage
character that transforms into delicate floral lilac-hyacinth sweetness, notably
free from the harsh pungency typical of phenyl acetaldehyde.
Longevity (FraterWork)
Lasts 24 hours on a smelling strip.
Odor life hours (PerfumersWorld)
20
Relative odor impact (PerfumersWorld)
500
Appearance (FraterWork)
Clear liquid
Descriptions
Description
Hydratropic Aldehyde is a fresh and sharp green hyacinth leaf
Odour (PerfumersWorld)
Very powerful and penetrating, green-earthy, foliage-like odor inextreme dilution becoming quite floral, Lilac-Hyacinth-like, and slightlyfruity. Pleasantly free from the stinging pungency of Phenylacetaldehyde. Atdilutions below 1 ppm, the taste is rather sweet-earthy-green and somewhatfruity, depending on accompanying acidity.
Description (PerfumersWorld)
Hydratropic Aldehyde is a fresh and sharp green hyacinth leaf
Synaesthesia (PerfumersWorld)
Color: Deep green with hints of lilacSound: Rustling of leaves in a gardenTexture: Smooth and velvety like a flower petalTaste: Sweet and slightly tangy like a ripe fruitFeeling: Fresh and invigorating greenImage: A vibrant garden filled with blooming flowers
Comment (FraterWork)
Hydratropic aldehyde captures the essence of fresh hyacinth leaves with
remarkable stability that sets it apart from volatile alternatives. This
material opens with sharp, crisp green notes evoking dewy morning gardens where
hyacinth blooms release their intoxicating scent. Its additional methyl group
provides crucial stabilisation, preventing the polymerisation issues that plague
phenyl acetaldehyde while maintaining full floral impact.
Many perfumers prefer hydratropic aldehyde to phenyl acetaldehyde in hyacinth
compositions, finding it outperforms in both stability and olfactory refinement.
Use at 0.01-0.5% for optimal effect—its power requires restraint but rewards
with exceptional longevity. The material excels in creating springtime
freshness, working beautifully in lilac, rose, narcissus, and tulip accords
where its green-floral duality adds natural depth.
What makes hydratropic aldehyde special compared to other hyacinth aldehydes is
its structural advantage—the alpha-methyl substitution creates steric hindrance
that dramatically improves stability without sacrificing potency. While phenyl
acetaldehyde requires stabilisation with phenyl ethyl alcohol and tends toward
harsh pungency, hydratropic aldehyde remains pleasantly smooth and controlled.
This stability means cleaner formulations, better shelf life, and more
predictable performance in finished products. Use it when you need reliable
hyacinth character that won't deteriorate or overwhelm.
aromachem Best Seller green
Notes
Hydratropic aldehyde captures the essence of fresh hyacinth leaves with
remarkable stability that sets it apart from volatile alternatives. This
material opens with sharp, crisp green notes evoking dewy morning gardens where
hyacinth blooms release their intoxicating scent. Its additional methyl group
provides crucial stabilisation, preventing the polymerisation issues that plague
phenyl acetaldehyde while maintaining full floral impact.
Many perfumers prefer hydratropic aldehyde to phenyl acetaldehyde in hyacinth
compositions, finding it outperforms in both stability and olfactory refinement.
Use at 0.01-0.5% for optimal effect—its power requires restraint but rewards
with exceptional longevity. The material excels in creating springtime
freshness, working beautifully in lilac, rose, narcissus, and tulip accords
where its green-floral duality adds natural depth.
What makes hydratropic aldehyde special compared to other hyacinth aldehydes is
its structural advantage—the alpha-methyl substitution creates steric hindrance
that dramatically improves stability without sacrificing potency. While phenyl
acetaldehyde requires stabilisation with phenyl ethyl alcohol and tends toward
harsh pungency, hydratropic aldehyde remains pleasantly smooth and controlled.
This stability means cleaner formulations, better shelf life, and more
predictable performance in finished products. Use it when you need reliable
hyacinth character that won't deteriorate or overwhelm.
aromachem Best Seller green
Usage
Perfume uses (PerfumersWorld)
Hydratropic Aldehyde is frequently used in floral perfumes,especially in Hyacinth and Lilac where it may outperform Phenylacetaldehyde. Itis also used in Rose, Narcissus, Tulip, and many exotic and tropical floraltypes, as well as certain non-floral fragrances such as transparent linearfragrances.Therapeutic Uses=> This material is not commonly used in aromatherapy oraromachology.
Uses (FraterWork)
Essential for sophisticated hyacinth accords, adds green freshness to
lilac and rose compositions, transparent florals.
IFRA 51 (FraterWork)
0.16% in finished product (Cat. 4)
Odour Family: Floral
Appearance: Clear liquid
Longevity: Lasts 24 hours on a smelling strip.
Odour Profile: Hydratropic aldehyde delivers a powerful green-earthy foliage
character that transforms into delicate floral lilac-hyacinth sweetness, notably
free from the harsh pungency typical of phenyl acetaldehyde.
Uses: Essential for sophisticated hyacinth accords, adds green freshness to
lilac and rose compositions, transparent florals.
INCI Name: 2-PHENYLPROPIONALDEHYDE
IUPAC Name: 2-phenylpropanal
Links
Comments
Sign in to leave a comment.