Hydratropic Aldehyde
Hydratropic Aldehyde
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The stable choice for refined hyacinth accords.
Green floral brilliance without harsh pungency.
Superior stability outperforms phenyl acetaldehyde.
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Synonyms: 2-Phenyl Propionaldehyde Classification: Heart Note[i]
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.
Odour Impact Scale [i]
Scale Interpretation
Hydratropic Aldehyde shows balanced behavior with moderate strength (5/10) and proportional impact in blends (6/10). Versatile and predictable to work with.
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
Fraterworks® is strictly a reseller of this product and is neither an agent nor official distributor for Vigon.
General Information
General Information
Like most suppliers and makers of quality raw materials for fragrances, we do not filter many of our products. This ensures that no odiferous matter is lost prior to use but can result in the appearance of small particles or slight clouding.
All alcoholic fragrances should be macerated for up to a month and then chilled in a moderate freezer overnight before being filtered fine. This will remove all cloudiness or detritus and is the industry norm.
IFRA Standards
IFRA Standards
Permitted amounts in finished product:
IFRA 51: 0.16%
IFRA 49: 0.16%
These are derived from calculated concentrations which do not replace chromatographic quantification on individual lots. Disclaimer...
For Trade Use Only
For Trade Use Only
Our products are intended as building blocks in the perfume creation process; they are not to be applied to the skin undiluted.
These raw materials are for use by the perfumery trade only.
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General Disclaimer
(a) Vegan labelling: Where the word “vegan” is used in relation to our products, that indicates that we have not added any animal products to products marked vegan. We do not verify whether any third-party supplier has used animal additives prior to supplying a product to us. We provide products marked vegan “as is” and make no representation as to the accuracy, completeness, or reliability of that claim.
(b) Natural labelling: Where the word “natural” is used in relation to our products, that indicates that we have not added any synthetic additives to products marked natural. We do not verify whether any third-party supplier has used synthetic additives prior to supplying a product to us. We provide products marked natural “as is” and make no representation as to the accuracy, completeness, or reliability of that claim.
(c) Documentation: We provide the information contained in each document you obtain from us (including but not limited to SDS, IFRA certificate, COA, TDS, EU Allergens, and any other regulatory document) “as is” and make no representation as to its accuracy, completeness, or reliability. We provide no warranties or guarantees in relation to a document you obtain from us. You purchase and use a document or documents at your own risk. Any implied conditions or warranties are excluded and, to the extent that they cannot be excluded, any liability we have to you or any other person or entity in respect of a document you obtain from us is limited to NZD0.01 (one cent). You indemnify us against any loss we suffer or incur as a direct or indirect result of your use of a document you obtain from us.
(d) Demonstration formulas: Demonstration formulas are provided as a guide only. We provide no warranties or guarantees in relation to the formula. You access and use the formula at your own risk. Any implied conditions or warranties are excluded and, to the extent that they cannot be excluded, any liability we have to you or any other person or entity in respect of the formula is limited to NZD0.01 (one cent). You indemnify us against any loss we suffer or incur as a direct or indirect result of your use of a formula.
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Regulations
DisclaimerAll of our products are compliant with EU 1223/2009 and the NZCPGS. None of our bases contain prohibited materials and regulatory compliance is possible depending on usage.
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IFRA Conformity
All of our bases can be used in products requiring conformity with the latest IFRA standards. Fraterworks is an official member of IFRA and the FFAANZ.
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Nitro Musks
Some of our products may contain small amounts of EU and IFRA compliant musk ketone. We never use musk xylene, musk ambrette or any other prohibited materials.