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alpha-isomethyl ionone

CAS Number
127-51-5
EC Number
204-846-3
Chemical Formula
C14H22O
Molecular Weight
206.32 g/mol

Description

Alpha-isomethyl ionone (CAS 127-51-5 ), also known as α-cetone and listed under FEMA 2714 , is a synthetic musk-violet fragrance ingredient used across cosmetic and industrial scent applications. It delivers a soft, powdery, woody-violet character that perfumers rely on as a fixative and blending base in finished fragrance compositions. In personal care, it is incorporated into fine fragrances and body lotions. The compound is also used in shampoos and soaps to provide lasting floral-woody depth and improve scent longevity on skin. Coatings and printing ink formulators use it to mask solvent odors effectively. It imparts a residual pleasant scent to finished products in various industrial sectors. Adhesive and sealant manufacturers add it to consumer-facing formulations where odor neutralization is required. Fragrance retention through cure is a key benefit in these technical applications. As a FEMA 2714-listed flavoring agent, it also sees limited use in flavor systems where violet or orris-type notes are specified. Alpha-isomethyl ionone is supplied as a clear to pale yellow liquid. It is available in fragrance-grade and flavor-grade specifications, with the latter conforming to FEMA and FCC standards. Bulk supply is standard in drums and IBCs, with smaller packaging available for laboratory and formulation sampling. This versatile ingredient remains a staple for scent profile stabilization and enhancement. Contact us for supply of alpha-isomethyl ionone Request Quote

Other Names (Synonyms)

α-isomethyl ionone | α-cetone | 3-Methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one | (3E)-3-methyl-4-(2,6,6-trimethylcyclohex-2-en-1-yl)but-3-en-2-one | RefChem:1068240 | Cetone alpha | Isomethyl-alpha-ionone | Isonaline 70

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Boiling Point86-88 °C @ Press: 0.1 Torr
Density0.9520 g/cm³ @ Temp: 20 °C
ColorLight orange to Yellow to Green
Odorat 10.00 % in dipropylene glycol. woody violet floral
Formliquid
Water Solubility27.953mg/L at 25℃
Vapor Pressure0.22Pa at 20℃
Refractive Index1.50188 (589.3 nm 20℃)
Log P4.288 at 25℃

Safety & Handling

Warning
GHS07· IrritantGHS09· Environment

Hazard Statements

H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H411Toxic to aquatic life with long lasting effects
H412Harmful to aquatic life with long lasting effects

Precautionary Statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P272Contaminated work clothing should not be allowed out of the workplace.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P321Specific treatment (see … on this label).
P391Collect spillage.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P352IF ON SKIN: Wash with plenty of water.
P317Get emergency medical help.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code2914.23.0000
UN Number1230
Packing GroupII
Storage Class10 - Combustible liquids
WGK (Germany)2