Chemical Agents
Chemical agents of disinfection are divided into two divisions—gaseous and liquid disinfectants. The gaseous disinfectants are: formaldehyde gas, sulphur dioxide gas, hydrocyanic acid gas, chlorin, oxygen, and oxone.
Some of the most important liquid disinfectants are metallic salts, bichloride of mercury, silver and zinc salts, coal-tar creosote, carbolic acid, phenol, lysol, creolin and formalin.