Chlorine is a pale green gas with a strong odor. Molar mass of Cl2 is approximately 35.45 grams per mole. Used for disinfecting water and manufacturing plastics. Highly reactive and toxic gas
Chlorine was first discovered by Scheele in 1774 as water-soluble gas. Chlorine is highly reactive and forms compounds with other elements. Chlorine atoms contain 17 electrons and can form stable or reactive compounds
Chlorine is the most widely used industrial biocide for water disinfection. Chlorine dioxide is less environmentally damaging than chlorine. Chloroisocyanurates enhance chlorine's biocidal action through UV light. Hypochlorite functions similarly to chlorine but is less effective. Ozone acts as a powerful oxidising agent at 0.5 ppm
Chlorine has chemical formula Cl2 and atomic mass of 35,453 amu. Element exists only in compounds, found mainly in minerals. Melting point is -100.95°C, boiling point -34.55°C. Most abundant halogen in earth's crust, found in two isotopes
Free chlorine is ready to fight bacteria, combined chlorine mixes with organic matter. Pure water contains only free chlorine. WHO recommends 0.2-0.5 mg/l free chlorine for tap water. Maximum chlorine allowed is 5 mg/l
Cl2 is a diatomic molecule with pH=7.4 and slightly soluble in water. Boiling point is 239.11K, melting point is 171.6K. Molecule is almost neutral and forms covalent bonds