(chemistry) The introduction of two chlorine atoms into a molecule.

plural of dichlorination

(chemistry, in combination) Two atoms of chlorine in a molecule / (chemistry) molecular chlorine, Cl₂

(inorganic chemistry) A dark red fuming liquid whose solid form has the structure [ClO₂]⁺[ClO₄]⁻; it is made by the action of ozone on chlorine dioxide and is diamagnetic and a strong oxidizing agent.

(inorganic chemistry) The chemical compound Cl₂O which, at room temperature, exists as a brownish-yellow gas soluble in both water and organic solvents.