SALE

Aldehyde C11 Undecyclic

Rated 5 out of 5 based on 3 customer ratings

(3 customer reviews)

Price range: £7.64 through £169.99

Odour description (decreasing): Waxy, Soapy, Floral, Aldehydic, Citrus, Green, Fatty, Fresh, Laundry

Earn up to 2,000 points.

Volume

Clear

Container Upgrade

Amber Glass Bottle with Tamper Proof Lid (+£0.75)

Tick the box to upgrade your purchase

Container Upgrade

Amber Glass Bottle with Tamper Proof Lid (+£1.25)

Tick the box to upgrade your purchase

Container Upgrade

Amber Glass Bottle with Tamper Proof Lid (+£0.50)

Tick the box to upgrade your purchase

Perfume Extract · Material profile

Aldehyde C11 Undecyclic

Undecanal

Odour description (decreasing)

Waxy, Soapy, Floral, Aldehydic, Citrus, Green, Fatty, Fresh, Laundry

Aldehydic Citrus Floral Green Top note

Floral family inspiration

About this material

A colourless, oily liquid, Aldehyde C11 is a component of perfumes, although naturally occurring in citrus oils, it is more commonly produced commercially by Hydroformylation of Decene.

Probably the most commonly used aldehyde for its “Aldehydic” effect.

Use in conjunction with other aldehydes up to levels of a couple of percent. Trace amounts of this aldehyde give a beautiful, rich and natural floral effect.

Classified as bitter and fresh. which makes it a great component to any Aldehydic composition.

Arctander describes C11 as: “Powerful, mildly waxy, rosy-citrusy odor of moderate to good tenacity. The odour could be classified as one of the prototypes of the term: ‘aldehydic’ door.” It’s unusual diffusive power, the lift and radiation it can introduce in a fragrance, are highly appreciated effects; even in soap perfumes. As a supporting note to Rose, Ambre, Moss and many other fragrance types, it is a very versatile material.”

C11 is a particularly awkward material that can tend to solidify at room temperature if not diluted, so a warm water bath may be required if storage of the material in its raw state is preferred.

Scent character

Highlights from the material’s listed odour profile.

Note position

Top note

TopOpening impression

HeartMain fragrance character

BaseLasting foundation

Open Ingredient Explorer

DiffusiveRecorded diffusion characteristic

Odour strength

High

(recommend smelling in a 1% solution or less)

Listed qualitative strength

Tenacity / substantivity

72 hour(s)

at 100%

Listed reference conditions

Fragrance development

TopHeartBase

Top note

Illustrative note development · no measured evaporation data

Generic material data

Molecular identity

CAS-linked compound reference

C₁₁H₂₂O

CAS-linked compound reference — Undecanal

This compound record is linked to the explicitly recorded CAS number. It is not supplier confirmation of the supplied grade, purity, stereochemistry, isomer proportions or complete composition.

Reference molecular weight: 170.29 g/mol
Reference IUPAC name: undecanal

More compound properties

Computed and structural reference properties for the named compound. These are not measured supplier specifications or properties of a complete dilution, mixture or batch.

XLogP (computed): 4.3
Exact mass (Da): 170.167065321
Monoisotopic mass (Da): 170.167065321
Topological polar surface area (Å²): 17.1
Complexity: 89
Formal charge: 0
Hydrogen bond donors: 0
Hydrogen bond acceptors: 1
Rotatable bonds: 9
Heavy atoms: 12
Isotope atoms: 0
Atom stereocentres: 0
Bond stereocentres: 0
Covalent units: 1
SMILES: CCCCCCCCCCC=O
InChI: InChI=1S/C11H22O/c1-2-3-4-5-6-7-8-9-10-11-12/h11H,2-10H2,1H3
InChIKey: KMPQYAYAQWNLME-UHFFFAOYSA-N

Reference data checked 2026-10-27.

CAS 112-44-7 · reference checked 2026-10-27.

Fragrance allergen reference

Generic regulatory reference only. This is not a supplier allergen declaration, measured composition, allergen-free claim or finished-product labelling assessment.

Raw-material reference based on recorded CAS numbers. A CAS match identifies a reference entry; it does not verify the supplied grade, composition, purity or finished-product compliance. Naturals, bases and mixtures require composition review.

European Union / Northern Ireland

No direct listed-entry CAS match in this jurisdiction’s held reference set. This does not mean the material is allergen-free. Constituents, grouped entries and natural-material composition may require further review.

Finished-cosmetic declaration thresholds: greater than 0.001% leave-on; greater than 0.01% rinse-off. Apply the current target-market rules to the actual complete formulation; no concentration is inferred here.

Commission Regulation (EU) 2023/1545 · Regulation (EU) 2023/1545 with 11 November 2025 corrigendum; checked 2026-10-26.

Held EU transition dates: placing noncompliant products on the market until 2026-07-31; making them available until 2028-07-31. Check applicability and current law for the intended market. 2025 corrigendum.

Great Britain

Regulation (EC) No 1223/2009, Annex III (Great Britain) · legislation.gov.uk current text checked 2026-10-26.

Current supplier composition or allergen declarations are required to assess naturals, bases, mixtures and actual concentrations. Reference data checked 2026-10-26; bundle 2026-10-27. Supplementary private documents remain separate.

Product specification

Physical stateLiquidReviewed product form

CAS number	112-44-7
Odour description (decreasing)	Waxy, Soapy, Floral, Aldehydic, Citrus, Green, Fatty, Fresh, Laundry
Odour strength	High (recommend smelling in a 1% solution or less)
Perfumery use	Effective from the smallest traces, through to 1%Listed perfumery guidance; this is not an IFRA limit.
Substantivity	72 hour(s) at 100%
Solvent	None
Physical state	Liquid
Synonyms	Aldehyde C11 ENIC (Undecanal), Undecanal 97, Aldehyde C11 Undecylic (Undecanal)

Additional listed details

Odour Description at 1% in DPG (decreasing): Waxy, Soapy, Floral, Aldehydic, Citrus, Green, Fatty, Fresh, Laundry

Safety & handling

Listed handling information1 hazard statement4 precautions

Signal word: Warning

Hazard statements:

H315 Causes skin irritation.

Precautionary statements:

P280 Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352 IF ON SKIN: Wash with soap and water.
P332+P313 If skin irritation occurs: Get medical advice/attention.
P362 Take off contaminated clothing and wash before reuse.

Professional/Industrial use only.

Professional-use information

Datasheets & customer documents

Available documents are attached to eligible completed orders in your account.

My account → Orders

Supplementary documents are supplied only where explicitly listed and available. Check documentation information

Purchased as a guest? Follow the SDS request guidance in our Documentation Supply Policy and provide proof of purchase.

Documentation Supply Policy

IFRA formulation guide

Generic reference only — not an IFRA certificate, compliance decision or use recommendation. The Responsible Person and qualified safety assessor must assess the actual finished formula using current applicable IFRA Standards, supplementary documentation where available and the CPSR.

Source: 51st Amendment overview, held source checked 2026-10-21. Bundle 2026-10-27. Individual Standards prevail over the overview.

No direct IFRA overview entry matched the recorded CAS in this held dataset. This does not mean unrestricted use, absence of relevant Standards or compliance. Constituent restrictions may still apply.

IFRA source overview · Individual IFRA Standards and supplementary documentation

Supplier certificates and private documents are separate evidence. Their availability does not determine whether this generic guide is shown. This is a dated local reference, not a live regulatory feed.

Creative ideas to explore

Creative directions, not tested formulas.

Petals and peel

With bergamot and a light citrus idea

Explore a brighter version of the floral character using a simple citrus counterpoint. Compare it with the unchanged flower accord and note whether the citrus frames the bloom or becomes the main subject of the sketch.

Stem and blossom

With geranium and leafy notes

Sketch the flower with a greener setting, keeping leaf and blossom as distinct ideas. Compare a clean floral reference with the greener version to decide how much of the imagined stem and garden belongs in the composition.

Petals over wood

With a transparent wood direction

Place the floral material against a spare wood backdrop and follow the balance through the evaluation. Try a softer wood variation separately, then choose whether your flower needs an open, airy setting or a smoother, more enveloping frame.

Volume	10ml, 30ml, 100ml, 250g, 500g, 1kg

Dilution Information

MaterialFragrance ingredient

Carrier / solventAs specified for the product

Supplied dilutionCheck the ratio and carrier

Concept illustration only; no dilution ratio or carrier is implied for this material. Refer to the product specification and label.

The suffix D forms part of the product name and indicates that the material is supplied as a dilution rather than at full strength.

POD = Precious Oil Dilution, typically intended for aromatherapy applications.

AOD = Absolute Oil Dilution, indicating that the product is supplied as a diluted absolute.

The dilution ratio and carrier/solvent are stated within the product specification and will also be shown on the product label.

IMPORTANT: Customers should always rely on the product specification when confirming the concentration and carrier/solvent supplied.

While we endeavour to ensure that product names and suffixes accurately reflect the material supplied, the product specification (including the stated dilution ratio and carrier/solvent) shall take precedence in the event of any omission, abbreviation, naming variation, or delayed update to a product title.

Please ensure you have selected the correct material, concentration, dilution ratio and carrier/solvent before completing your purchase.

3 reviews for Aldehyde C11 Undecyclic

Rated 5 out of 5
RJR (verified owner) – February 13, 2026
Vintage glamour energy
Rated 5 out of 5
Simon Ilinkin (verified owner) – February 11, 2026
Rated 5 out of 5
suson.teodor (verified owner) – October 19, 2025
Aldehyde C11 Undecyclic – Fresh, waxy, and citrusy — adds sparkle, lift, and diffusion to floral and soapy accords.

Add a review

Handling precautions

For professional perfumery use only. Not for direct application to skin or ingestion. Keep out of reach of children.

Handle using the precautions specified for the material. Wear suitable protective gloves and eye protection where required.

Keep away from sources of ignition where applicable and avoid release to the environment.

Keep containers securely closed and store under the conditions specified on the product label and SDS. Keep liquid containers upright.

If swallowed or otherwise exposed, follow the SDS first-aid instructions and seek medical advice as appropriate. Do not induce vomiting unless directed by a medical professional.

Product-specific warnings, handling precautions and storage requirements take precedence over this general information.

Read the applicable SDS

A Safety Data Sheet (SDS) is available to logged in users who have purchased this item, where applicable.

Documents are not supplied before purchase.

Read the applicable SDS before handling or using the material. Follow its instructions for hazards, protective equipment, first aid, handling, storage and disposal.

An SDS provides information about the material supplied; it does not replace an assessment of the safety or compliance of a finished formulation.

Please note that supplementary documentation—including, but not limited to, IFRA Certificates, Certificates of Analysis (CoA), Allergen Declarations, and other regulatory or compositional data—may not be available for all products. Refer to the "Supplementary Documentation" tab to check current availability. If the tab is not present, no supplementary documents are available for the material.

Customers intending to use materials in cosmetic applications, including for the preparation of a Cosmetic Product Safety Report (CPSR) under UK and EU Cosmetics Regulations, must contact us prior to purchase to confirm the availability and suitability of any required documentation where it is not explicitly stated. Orders must not be placed in reliance on the assumption that such documentation will be provided where it is not explicitly stated on the relevant product page at the time of purchase.

By proceeding with a purchase without prior written confirmation, you acknowledge and accept that documentation beyond the legally required SDS may not be supplied, and you agree that Perfume Extract shall not be held liable for the absence of such documentation or for any inability to complete regulatory requirements, including CPSR or product compliance obligations.

Products are supplied in accordance with our Documentation Supply Policy

Customer responsibility

These limitations apply to reliance on all documentation supplied, including IFRA information, allergen declarations, Certificates of Analysis (CoAs), technical data sheets, specifications and other supporting documents.

Perfume Extract is solely a reseller of this product and is not an agent, official distributor, or affiliated in any way with the manufacturer.

Customers are responsible for determining whether the material and available documentation meet their requirements before purchase, and for assessing the safety and compliance of their finished products.

We do not provide formulation instructions, formulation consultancy or confirmation of suitability at a particular concentration or for a particular application.

Producer identity, detailed sourcing and processing information are not disclosed beyond the information published in the product listing.

Please read our Documentation Supply Policy alongside the product specification and available documentation.

Synonyms, alternative names, CAS/EC references, botanical names, manufacturer references and external links may describe a substance or material family generally. They should not, on their own, be taken as confirmation of the supplied material’s producer, geographical origin, manufacturing process, grade, purity, constituent levels or batch characteristics.

In particular, a synonym or reference must not be used to infer that a material is free from a particular constituent, meets a numerical specification, or is suitable for a particular application or concentration.

IFRA information, allergen declarations, Certificates of Analysis (CoAs), technical data sheets and other supporting documents apply only within their expressly stated scope. A general specification or reference document is not a batch-specific analytical result unless it expressly identifies the relevant batch.

If information appears inconsistent, or a particular characteristic is essential to your purchase, contact us for written clarification before ordering. Do not resolve discrepancies by assuming that a synonym, external reference or document for another grade applies to the material supplied.

We do not confirm characteristics beyond those expressly supported by the applicable product specification or our written confirmation. Customers remain responsible for assessing their complete formulation and intended application.

Nothing in this information excludes or restricts liability or statutory rights that cannot lawfully be excluded or restricted.

Raw materials

Bottles & Packaging

Kits & Gifts

Fragrance oils

Explore Perfumery Materials

Understanding CPSR Requirements

Explore Fragrance

Aldehyde C11 Undecyclic