Hexyl Cinnamic Aldehyde (HCA)
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Aroma Chemicals

Hexyl Cinnamic Aldehyde (HCA)

Unravel Perfumery ·Aroma Chemicals

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Scent FamilyFloralJasmineWaxy
Restricted under the IFRA Standards (51st Amendment, in force). Maximum in fine fragrance (Category 4): 9.9%; other product types have different limits. IFRA's 52nd Amendment (notification expected January 2027) will revise the current limits. The new values have not been published yet. EU: Listed fragrance allergen: declare on EU cosmetic labels above 0.001% (leave-on) or 0.01% (rinse-off).

CAS 101-86-0 · Floral · Jasmine · IFRA restricted (fine fragrance max 9.9%)

Hexyl cinnamic aldehyde, or HCA, is a soft, waxy jasmine floral that has been a staple of perfumery for decades. It is stable, inexpensive and blends into almost anything, which is why it turns up in everything from fine fragrance to soap.

What it smells like

Mild jasmine with a waxy, slightly herbal character. It is soft rather than indolic and gives a gentle floral body.

How perfumers use it

HCA fills out jasmine and white-floral accords, softens rough edges and gives florals more body at low cost. Pair it with Hedione for an airy, modern jasmine. It is stable in soap and candle bases.

Blends well with: Hedione / MDJ, Phenyl Ethyl Alcohol, Benzyl Salicylate, Hydroxycitronellal, Musks.

IFRA & regulatory

Restricted under the IFRA Standards (51st Amendment, in force). Maximum in fine fragrance (Category 4): 9.9%; other product types have different limits. IFRA's 52nd Amendment (notification expected January 2027) will revise the current limits. The new values have not been published yet. EU: Listed fragrance allergen: declare on EU cosmetic labels above 0.001% (leave-on) or 0.01% (rinse-off).

For use in perfumery, cosmetics and fragrance manufacturing only. Not for ingestion. Handle neat material with gloves and good ventilation. The certificate of analysis (COA) and safety data sheet (SDS) are available on request.

Frequently asked questions

What does HCA smell like?

A soft, waxy jasmine floral with a light herbal note.

Is HCA the same as hexyl cinnamal?

Yes. Hexyl cinnamal is the INCI/labelling name for hexyl cinnamic aldehyde (CAS 101-86-0).

Is HCA restricted?

Restricted under the IFRA Standards (51st Amendment, in force). Maximum in fine fragrance (Category 4): 9.9%; other product types have different limits. IFRA's 52nd Amendment (notification expected January 2027) will revise the current limits. The new values have not been published yet. EU: Listed fragrance allergen: declare on EU cosmetic labels above 0.001% (leave-on) or 0.01% (rinse-off).

Browse more aroma chemicals for perfumery. Technical and regulatory data checked 21 September 2026 against the IFRA Standards (51st Amendment) and the 52nd Amendment consultation outcome.

Pair & layer

Works beautifully with

Starting points built from our own catalogue. Dosages are % of the finished oil or parts by weight; adjust by smell.

Accord

Airy jasmine

Soft, luminous jasmine with a smooth, sunny body.

Use at 15–30% of a white-floral formula.

Suggested levels are kept within IFRA fine-fragrance limits for the added material. Your oil already contains other materials, so check the finished blend against the IFRA Standards before selling.

Official documents and compliance certificates for this product. Always verify IFRA usage levels from the official compliance sheets before formulation.

IFRA Compliance SheetPDF
Safety Data Sheet (SDS)PDF

Documents will appear here once uploaded via the custom.certifications metafield.Request via WhatsApp →

Orders dispatched within 1–2 business days. Standard delivery 4–7 business days across India. Free shipping on orders above ₹999 across India.

Opened fragrance products cannot be returned. Damaged or incorrect items resolved within 48 hours of reporting with photo.

Technical profile

Hexyl Cinnamic Aldehyde (HCA), at a glance

Technical & regulatory data checked 21 Sep 2026

Molecule
C15H20O
Chemical name
2-Benzylideneoctanal (alpha-hexylcinnamaldehyde)
CAS number
101-86-0
Molecular weight
216.32 g/mol
Appearance
Pale yellow liquid
Solubility
soluble in fixed oils, paraffin oil; insoluble in water, glycerin, PG (TGSC); ethanol-soluble in practice
Flash point
113 °C
Also known asHCAHexyl cinnamal
Performance
Note positionHeart-Base
Odour strengthMedium
Tenacity on strip400+ h
Fleeting2 weeks+
Typical useAround 5% of a perfume compound
Odour profile
Floral · Jasmine
Soft jasminewaxyherbalslightly fatty-green
Regulatory
IFRA restricted
9.9% Max. in fine fragrance
(IFRA Category 4)

Coming change: IFRA's 52nd Amendment (notification expected January 2027) will revise the current limits. The new values have not been published yet.

EU: Listed fragrance allergen: declare on EU cosmetic labels above 0.001% (leave-on) or 0.01% (rinse-off).

Limits for other product types differ. Always check the current IFRA Standards and your local cosmetic regulations before finalising a formula.

Formulating with this material?

Start with a small pack, move to bulk when your formula is locked. Documents and bulk pricing are one message away.