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Synthetic aroma chemicals

Ionone

Also known as Irisone, alpha-Ionone, (E)-(+-)-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one

CAS 8013-90-9Formula C13H20OMolar mass 192.30 g/molEC 232-396-8
GHS hazard pictograms. Pictograms: Hazardous to the environment 5 suppliers listed
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Ionone chemical structure, C13H20O, CAS 8013-90-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
8013-90-9
Formula
C13H20O
Molar mass
192.30 g/mol
Physical form
Liquid
HS code
291423
Category
Synthetic aroma chemicals
Illustrative photo, closed blue steel drums of liquid in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Ionone?

Plain description, key identifiers and synonyms

Ionone is a chemical substance with the molecular formula C13H20O and a molar mass of 192.30 g/mol. Its CAS registry number is 8013-90-9. The IUPAC name is 4-(2,6,6-trimethylcyclohex-2-en-1-yl)but-3-en-2-one.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
4-(2,6,6-trimethylcyclohex-2-en-1-yl)but-3-en-2-one
CAS number
8013-90-9 CAS number cross-checkedOther or deprecated CAS: 31798-12-6, 6901-97-9
EC numbers
232-396-8, 250-812-6, 939-953-0
Molecular formula
C13H20O
INCI name
IONONE
InChIKey
UZFLPKAIBPNNCA-UHFFFAOYSA-N
InChI
InChI=1S/C13H20O/c1-10-6-5-9-13(3,4)12(10)8-7-11(2)14/h6-8,12H,5,9H2,1-4H3
SMILES (canonical and isomeric)
CC1=CCCC(C1C=CC(=O)C)(C)C

Synonyms

  • Irisone
  • alpha-Ionone
  • (E)-(+-)-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one
  • 4-(2,6,6-Trimethyl-2-cyclohexenyl)-3-buten-2-one

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Liquidexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
192.30 g/molcalc.
Exact mass
192.1514 Dacalc.
LogP (octanol/water)
3.51calc.
Topological polar surface area
17.07 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
2calc.
Heavy atoms
14calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.62calc.
Formal charge
0calc.
Stereocentres
1calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, C1=CCCCC1

C1=CCCCC1

1 ring, 6 atoms, the Cyclohexene ring system.

5,167 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS classification
Hazard pictograms
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (3)
  • P273Avoid release to the environment.
  • P391Collect spillage.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Ionone suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 5 suppliers
5 of 5 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

5 suppliers in 2 countries

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Ionone price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Industrial uses: Fragrance.

Consumer uses: Fragrance.

Cosmetic ingredient, INCI name IONONE(astringent, perfuming)

Roles

  • eukaryotic metabolite
  • metabolite
  • plant metabolite
  • volatile oil component

Functional uses

  • Astringent
  • Fragrance

Cosmetic functions

  • Astringent
  • Perfuming

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Ionone is traded under.

HS 2914.23Indicative HS code

Ionones and methylionones

World exports in 2024
$145M
+11.9% vs 2023, imports $157M
2019 to 2024
Top exporters
  1. China29.6%
  2. Germany24.0%
  3. Switzerland * partner reported23.5%
Top importers
  1. United States16.5%
  2. Netherlands10.2%
  3. Singapore10.2%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Ionone is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Ionone, based on the data on this page

What is Ionone?

Ionone is a chemical substance with the molecular formula C13H20O and a molar mass of 192.30 g/mol. Its CAS registry number is 8013-90-9. The IUPAC name is 4-(2,6,6-trimethylcyclohex-2-en-1-yl)but-3-en-2-one.

What is the CAS number of Ionone?

The CAS registry number of Ionone is 8013-90-9. Other or deprecated CAS numbers: 31798-12-6, 6901-97-9.

What is the molecular formula and weight of Ionone?

The molecular formula of Ionone is C13H20O and its molar mass is 192.30 g/mol.

What is Ionone used for?

Industrial uses: Fragrance. Consumer uses: Fragrance.

Is Ionone hazardous?

Ionone has a GHS hazard classification. Main hazards: toxic to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Ionone?

Ionone is usually classified under HS code 291423 (Ionones and methylionones). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Ionone?

CompoundList lists 5 suppliers of Ionone in India and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Ionone in India?

3 suppliers in India list Ionone on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Ionone?

Suppliers quote Ionone on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Ionone

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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