7388-22-9

Basic information

• Product Name: ALPHA-ISO-METHYLIONONE
• Synonyms: 4-(2,6,6-TRIMETHYL-2-CYCLOHEXEN-1-YL)-3-METHYL-3-BUTEN-2-ONE;3-METHYL-4-(2,6,6-TRIMETHYL-2-CYCLOHEXEN-1-YL)-3-BUTEN-2-ONE;3-METHYL-4-(2,6,6-TRIMETHYLCYCLOHEX-2-ENYL)BUT-3-EN-2-ONE;3-BUTEN-2-ONE, 3-METHYL-4-(2,6,6-TRIMETHYL-2-CYCLOHEXEN-1-YL);ALPHA-CETONE;ALPHA-ISO-METHYLIONONE;ISORALDEINE;METHYL IONONE A, GAMMA
• CAS NO: 7388-22-9
• Molecular Formula: C₁₄H₂₂O
• Molecular Weight: 206.32
• EINECS: 204-846-3
• Mol File: 7388-22-9.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 285.9 °C at 760 mmHg
• Flash Point: 122.4 °C
• Appearance: /
• Density: 0.93 g/mL at 20 °C(lit.)
• Vapor Pressure: 0.00272mmHg at 25°C
• Refractive Index: 1.476
• CAS DataBase Reference: ALPHA-ISO-METHYLIONONE(CAS DataBase Reference)
• NIST Chemistry Reference: ALPHA-ISO-METHYLIONONE(7388-22-9)
• EPA Substance Registry System: ALPHA-ISO-METHYLIONONE(7388-22-9)

Safety Data

• WGK Germany: 2
• Hazardous Substances Data: 7388-22-9(Hazardous Substances Data)

Usage

General Description

Alpha-iso-methylionone, also known as 4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one, is a organic compound classified as a fragrance ingredient used in cosmetic and personal care products. It is a clear, colorless liquid with a floral and woody scent, and is often used to add a sweet and powdery note to perfumes, soaps, lotions, and other beauty products. It is a synthetic compound that mimics the scent of iris flowers, and is considered safe for use in cosmetics when used in accordance with good manufacturing practices. However, it may cause skin irritation in some individuals, and it is important to follow proper handling and usage guidelines when working with this chemical.

InChI:InChI=1/C14H22O/c1-10-7-6-8-14(4,5)13(10)9-11(2)12(3)15/h9,13H,1,6-8H2,2-5H3/b11-9+

Upstream product

• 26651-96-7 7,11-dimethyl-dodeca-4,6,10-trien-3-one 

Relevant articles and documents

CONTINUOUS PROCESS FOR PRODUCING PSEUDOIONONES AND IONONES

The invention relates to a continuous process for producing pseudoionones of general formulas (I) and (I′) as well as isomers thereof, whereby: R1represents CH3 or (a); R2 and R3 represent hydrogen, CH3 or C2H5, and; R4 and R5represent hydrogen or CH3. These pseudoionones are produced by reacting an aldehyde of formula (II) with an excess of a ketone of general formula (III), whereby R1, R2 and R3 have the aforementioned meanings, in the presence of water and alkali hydroxide at an increased temperature and in a homogeneous solution. The inventive process is characterized in that: a) the intermixing of the homogeneous solution consisting of aldehyde, ketone and aqueous alkali lye occurs at a temperature ranging from 10 to 120 °C; b) the undissolved water and alkali hydroxide contained in the reaction mixture are subsequently separated out; c) while avoiding back mixing, the homogeneous reaction mixture is then guided through a reactor, which permits a residence time ranging from 2 to 300 minutes, at a temperature that is 10 to 120 °C higher than the boiling point of the lowest-boiling component and under a vapor pressure p ranging from 106 to 107 Pa; d) the reaction mixture is cooled by expansion; e) ketone is removed from the reaction mixture using vapor flowing in the opposite direction and; f) the raw product is dried and rid from excessive aldehyde and secondary components via a rectification column.