Odour strength
Medium
(recommend smelling in a 10.00 % solution or less)
Listed qualitative strength
SALE
Helional
Price range: £4.24 through £93.49
Odour description (decreasing) Green, Floral (Cyclamen), Ozonic, Watery, New-Mown Hay, Fresh, Slightly Melonic
- Description
- Additional information
- Reviews (3)
- Safety Information
- Datasheets
- Supplementary Documentation
- Disclaimer
About this material
Helional captures the sensation of open air moving across a green summer landscape.
Its luminous cyclamen-floral heart is lifted by cool ozonic freshness, while subtle impressions of newly cut hay bring a soft, natural warmth beneath the airy surface.
A luminous green-floral note with the delicate character of cyclamen, carried on cool ozonic air.
Fresh, watery and softly diffusive, Helional reveals subtle nuances of dew-covered foliage, newly cut hay and a faint melon-like sweetness.
Helional introduces space, clarity and modern radiance into a composition.
It is especially effective in aquatic, floral, green and contemporary clean accords, where it can suggest dew-covered petals, distant sea air and the atmospheric freshness that follows a summer breeze.
Used with restraint, it lends lift and transparency; at higher levels, it becomes a distinctive watery-floral signature with remarkable presence.
Extremely versatile and useful and often perceived as having a gentle melon-like or marine nuance, but it is less overtly fruity than materials such as Calone.
Strongly influencing the evolution of perfumery in the present day; a material of infinite quality, where creative possibility is endless.
Scent character
Highlights from the material’s listed odour profile.
GreenLeafy, green character
Floral (Cyclamen)Listed odour facet
OzonicListed odour facet
Note position
Heart note
TopOpening impression
HeartMain fragrance character
BaseLasting foundation
Material character
A closer look
DiffusiveRecorded diffusion characteristic
Tenacity / substantivity
64 hour(s)
at 100%
Listed reference conditions
Fragrance development
TopHeartBase
Heart note
Illustrative note development · no measured evaporation data
Generic material data
CAS-linked compound referenceMolecular identity
C11H12O3
CAS-linked compound reference — 3-(3,4-Methylenedioxyphenyl)-2-methylpropanal
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
- 192.21 g/mol
- Reference IUPAC name
- 3-(1,3-benzodioxol-5-yl)-2-methylpropanal
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)
- 2.2
- Exact mass (Da)
- 192.078644241
- Monoisotopic mass (Da)
- 192.078644241
- Topological polar surface area (Ų)
- 35.5
- Complexity
- 205
- Formal charge
- 0
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 3
- Rotatable bonds
- 3
- Heavy atoms
- 14
- Isotope atoms
- 0
- Atom stereocentres
- 1
- Bond stereocentres
- 0
- Covalent units
- 1
- SMILES
- CC(CC1=CC2=C(C=C1)OCO2)C=O
- InChI
- InChI=1S/C11H12O3/c1-8(6-12)4-9-2-3-10-11(5-9)14-7-13-10/h2-3,5-6,8H,4,7H2,1H3
- InChIKey
- BOPPSUHPZARXTH-UHFFFAOYSA-N
Reference data checked 2026-10-27.
CAS 1205-17-0 · 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
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.
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 | 1205-17-0 |
|---|---|
| Odour description (decreasing) | Green, Floral (Cyclamen), Ozonic, Watery, New-Mown Hay, Fresh, Slightly Melonic |
| Odour strength | Medium (recommend smelling in a 10.00 % solution or less) |
| Perfumery use | Effective from the smallest traces, through to 15%Listed perfumery guidance; this is not an IFRA limit. |
| Substantivity | 64 hour(s) at 100% |
| Solvent | None |
| Physical state | Liquid |
| Synonyms | 3-(1, 3-benzodioxol-5-yl)-2-methylpropanal, Aquanal, Heliopropal, Heliobouquet, Heliogan, Heliofolal, Piperonyl propanal, Helial, Ocean Propanol, Helional IFF |
Safety & handling
Listed handling information2 hazard statements7 precautions
Signal word: Warning
Hazard statements:
- H317 May cause an allergic skin reaction.
- H411 Toxic to aquatic life with long lasting effects.
Precautionary statements:
- P280 Wear protective gloves/ protective clothing/ eye protection/ face protection.
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
- P272 Contaminated work clothing should not be allowed out of the workplace
- P273 Avoid release to the environment.
- P302+P352 IF ON SKIN: Wash with soap and water.
- P363 Wash contaminated clothing before reuse.
- P333+P313 If skin irritation or a rash occurs: Get medical advice/attention.
Professional/Industrial use only.
Datasheets & customer documents
Available documents are attached to eligible completed orders in your account.
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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 PolicyIFRA 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.
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.
Source: 51st Amendment overview, held source checked 2026-10-21. Bundle 2026-10-27. Individual Standards prevail over the overview.
alpha-Methyl-1,3-benzodioxole-5-propionaldehyde (MMDHCA)
RESTRICTION · CAS 1205-17-0
Category 4 — fine fragrance: 2.6% in the finished consumer product
All applicable specification, purity and other Standard conditions must also be met.
All IFRA categories and Standard conditions
| Category 1 | 0.12% in the finished consumer product |
|---|---|
| Category 2 | 0.25% in the finished consumer product |
| Category 3 | 0.039% in the finished consumer product |
| Category 4 | 2.6% in the finished consumer product |
| Category 5A | 0.39% in the finished consumer product |
| Category 5B | 0.077% in the finished consumer product |
| Category 5C | 0.077% in the finished consumer product |
| Category 5D | 0.026% in the finished consumer product |
| Category 6 | 0.62% in the finished consumer product |
| Category 7A | 0.077% in the finished consumer product |
| Category 7B | 0.077% in the finished consumer product |
| Category 8 | 0.026% in the finished consumer product |
| Category 9 | 0.15% in the finished consumer product |
| Category 10A | 0.15% in the finished consumer product |
| Category 10B | 0.62% in the finished consumer product |
| Category 11A | 0.026% in the finished consumer product |
| Category 11B | 0.026% in the finished consumer product |
| Category 12 | 12% in the finished consumer product |
CAS numbers (comment): The scope of this Standard includes, but is not limited to the CAS number(s) indicated above; any other CAS number(s) used to identify this fragrance ingredient should be considered in scope as well.
Contributions from other sources: See Annex
Flavor use consideration: Due to the possible ingestion of small amounts of fragrance ingredients from their use in products in Categories 1 and 6, materials must not only comply with IFRA Standards but must also be recognized as safe as a flavoring ingredient as defined by the IOFI Code of Practice (www.iofi.org). For more details see chapter 1 of the Guidance for the use of IFRA Standards.
IFRA Standard type: RESTRICTION
Intrinsic property driving the risk management measure: DERMAL SENSITIZATION AND SYSTEMIC TOXICITY
Amendment revised: 49
Existing creations deadline: February 10, 2022
New creations deadline: February 10, 2021
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.
Leaf and blossom
With rose and garden floralsExplore a green floral sketch around a clear flower reference. Compare the leafy accent with the flower alone and decide whether the scene suggests a cut stem, a growing garden or a greener abstraction you want to develop.
Peel and leaf
With bergamot and herbal directionsUse citrus as a bright setting for the green material, then try an herbal alternative as a separate variation. Keeping those contrasts apart makes it easier to choose between a peel-focused idea and a leafy cologne.
A shaded wood
With transparent woods and soft muskSketch a green wood direction with a restrained backdrop. Follow the leafy character as the study develops, comparing a wood-only reference to decide whether the scene suggests fresh branches, shaded timber or a softer woodland impression.
| 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 Helional
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
The following additional documentation is available as a download to logged in users who have purchased this item:
- IFRA
- ALLERGEN
Document scope and limitations
The supplementary documents currently available for this material are identified in this tab. Availability varies between materials.
Batch-specific certificates, analytical results and additional technical data are not guaranteed. They are supplied only where their availability is expressly confirmed in this tab or separately confirmed by us in writing.
Where provided, supplier IFRA documentation does not replace a comprehensive safety assessment or constitute approval of a finished formulation. Customers must consider their complete formulation and intended application.
Any linked IFRA standard is provided for reference and is not a batch-specific specification or analytical certificate for the material supplied.
Do not assume that documentation confirms a particular batch, residual constituent level, manufacturing process or analytical result unless it expressly states this.
The same limitations apply to allergen declarations, Certificates of Analysis (CoAs), technical data sheets, specifications, and other regulatory, analytical or compositional documents. These documents provide information only within their stated scope; they do not replace a comprehensive safety assessment or constitute approval of a finished formulation, nor do they guarantee suitability for a particular application. Customers must assess their complete formulation and intended use.
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.
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Ola S. (verified owner) –
Good
Franca Tulino (verified owner) –
Simon Ilinkin (verified owner) –