Benzyl Alcohol Aroma Chemical
CAS# 100-51-6

Benzyl Alcohol (also known as Phenylmethanol) is an aromatic alcohol with a chemical structure consisting of a benzene ring attached to a hydroxymethyl group (C7H8O or C6H5CH2OH). Under standard conditions, the product appears as a clear, colorless liquid with a mild, pleasant, sweet aromatic odor featuring fruity, floral, and balsamic notes. This chemical is moderately soluble in water (approximately 33-40 g/L) and is completely miscible with various organic solvents such as chloroform, benzene, acetone, and ether. Thanks to these properties, Benzyl Alcohol serves as a versatile ingredient, widely used as a preservative, solvent, viscosity-decreasing agent, and fragrance component across multiple industries.

In the cosmetics industry, Benzyl Alcohol is a familiar ingredient in formulations for skin creams, body lotions, serums, facial cleansers, and hair care products like shampoos and conditioners. Its primary function is as a superior antimicrobial preservative, which disrupts the cell membranes of microorganisms to prevent the growth of bacteria and fungi, being particularly effective in acidic environments with a pH below 5.5. Additionally, it acts as a solvent to help dissolve water-insoluble ingredients and contributes to the mild fragrance profile of perfumes and scented products. The typically recommended usage concentration in cosmetics ranges from 0.5% to 2%.

Benzyl Alcohol plays a crucial medical role and is approved by the U.S. Food and Drug Administration (FDA) as an active pharmaceutical ingredient (at a 5% concentration) in topical medications for the treatment of head lice (Pediculosis capitis) in patients 6 months of age and older. Besides this, the chemical is frequently used at low concentrations (most commonly 0.9%) as a bacteriostatic preservative in multi-dose injectable drugs or saline solutions, helping to prevent bacterial contamination during intravenous administration.

Industrially, Benzyl Alcohol is utilized as a safer and powerful solvent in products such as paint and varnish strippers, adhesive cleaners, and graffiti removers. The U.S. Environmental Protection Agency (EPA) has classified Benzyl Alcohol on the Safer Chemical Ingredients List as an environmentally friendly alternative to traditional, highly toxic solvents.

Despite its utility, the use of Benzyl Alcohol requires strict attention to safety. In its undiluted form, this substance can cause serious eye irritation, is harmful if swallowed or inhaled, and may cause allergic contact dermatitis. It is absolutely contraindicated to use products containing Benzyl Alcohol in premature babies and neonates under 4 weeks of age, as this age group cannot metabolize the chemical, leading to the risk of the extremely dangerous and potentially fatal "gasping syndrome". For storage, the product should be kept in a tightly closed container and stored in a cool, dry, well-ventilated place, away from direct sunlight, heat sources, and open flames.