Q. What are the chemical properties of hand sanitizers?

According to Britannica hand sanitizers are classified into alcohol-free and alcohol-based. The alcohol-based sanitizers contain between 60-95% of alcohol. The main chemical composition is ethanol isopropanol or n-propanol. Hand sanitizers in such composition of alcohol are very effective against certain types of microorganisms. Alcohol-free sanitizers are usually based on disinfectants like benzalkonium chloride or antimicrobial agents like triclosan. Other alcohol-free hand sanitizers also comprise emollients for example glycerine for soothing the skin.