Alpha-isomethyl ionone

Alpha-Isomethyl Ionone is a synthetic compound that is widely used in the cosmetics industry and perfumery. It is known for its sweet, floral scent, which is reminiscent of violet flowers.

Chemical Structure and Properties

Alpha-Isomethyl Ionone, also known as 3-methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one, is a terpene derivative. It has a molecular formula of C14H22O and a molecular weight of 206.32 g/mol. The compound is a pale yellow liquid at room temperature and has a boiling point of 134-135°C at 10 mmHg.

Production and Use

Alpha-Isomethyl Ionone is synthesized from citral, a terpenoid compound found in lemongrass, and acetone. The reaction involves a condensation reaction followed by a cyclization process.

In the cosmetics industry, Alpha-Isomethyl Ionone is used as a fragrance ingredient in a variety of products, including perfumes, soaps, and lotions. It is also used in laundry detergents and fabric softeners due to its long-lasting scent.

Safety and Regulations

Alpha-Isomethyl Ionone is generally considered safe for use in cosmetics and personal care products. However, it has been identified as a potential allergen by the European Union and is therefore required to be listed on the ingredient labels of products sold in the EU if its concentration exceeds certain levels.

See Also

• Fragrance ingredient
• Cosmetics industry
• Perfumery
• Terpene