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Aroma Chemicals

Aldehyde C-18 (Gamma Nonalactone)

Name: Aldehyde C-18 (Gamma Nonalactone)
Brand: Unravel Perfumery
SKU: UP-AC-ALDC18-100G
Availability: OutOfStock

Unravel Perfumery ·Aroma Chemicals

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Scent FamilyCoconutCreamyLactonicSweet

CAS 104-61-0 · Lactonic · Coconut · Not restricted by IFRA

Aldehyde C-18 is the old trade name for gamma-nonalactone, the creamy coconut note of perfumery. Despite the name it is neither an aldehyde nor an 18-carbon molecule. The label is a historical quirk that stuck.

What it smells like

Creamy, milky coconut with a sweet, slightly fatty richness. It is quite strong and long-lasting.

How perfumers use it

It is the natural choice for coconut, suntan and tropical accords, and a little adds creamy skin-warmth to tuberose, gardenia and other white florals. In gourmands it pairs with vanillin and coumarin. Start low. Overdosed, it turns plasticky.

Blends well with: Coumarin, Ethyl Vanillin, Hedione, Musks, Benzyl Salicylate.

IFRA & regulatory

Not restricted under the current IFRA Standards (51st Amendment).

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

Why is gamma-nonalactone called aldehyde C-18?

It is a historical trade name from early 20th-century perfumery. Chemically it is a lactone with nine carbons, not an aldehyde.

What does aldehyde C-18 smell like?

Creamy, sweet coconut with a milky softness.

Is aldehyde C-18 IFRA restricted?

Not restricted under the current IFRA Standards (51st Amendment).

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

Coconut-vanilla cream

10Aldehyde C-18
20Ethyl Vanillin
5Ethyl Maltol
65Musk T (ethylene brassylate)

Creamy coconut, vanilla and a touch of candy sweetness over soft musk.

Use at 5–15% of a gourmand or tropical formula.

Boost Coconut & Vanilla Perfume Oil Add 0.2–0.5% Aldehyde C-18 to this oil

Expect a creamy coconut-lactonic softness.

Boost Pepper, Cacao & Tonka Perfume Oil Add 0.2–0.5% Aldehyde C-18 to this oil

Expect a creamy coconut-lactonic softness.

Boost Coconut, Lime & Rum Perfume Oil Add 0.2–0.5% Aldehyde C-18 to this oil

Expect a creamy coconut-lactonic softness.

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 →

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Technical profile