Chlorine
CAS 7782-50-5
Oxidizers & Peroxides Water TreatmentPharmaceuticals & HealthcareTextile, Leather & PaperPulp & Paper Bleaching & WhiteningPreservation & Biocide
Description
Chlorine (CAS 7782-50-5), also known as dichlorine or molecular chlorine, is a diatomic halogen gas produced industrially via the chlor-alkali electrolysis process. It carries no assigned E-code and is handled and transported as a liquefied compressed gas in industrial supply chains.
In water treatment, chlorine disinfects by reacting with water to form hypochlorous acid, which disrupts microbial cell membranes and eliminates pathogens at low concentrations. In pulp and paper and textile processing, it acts as a bleaching agent by oxidising chromophoric bonds in lignin and dye molecules, achieving whitening without mechanical abrasion.
Chlorine is supplied in industrial and technical grades, typically in pressurised steel cylinders or ISO tank containers for bulk delivery. It falls under REACH regulation and is subject to strict handling requirements under the Seveso III Directive. Buyers should confirm grade specification and purity certificates prior to procurement.
In water treatment, chlorine disinfects by reacting with water to form hypochlorous acid, which disrupts microbial cell membranes and eliminates pathogens at low concentrations. In pulp and paper and textile processing, it acts as a bleaching agent by oxidising chromophoric bonds in lignin and dye molecules, achieving whitening without mechanical abrasion.
Chlorine is supplied in industrial and technical grades, typically in pressurised steel cylinders or ISO tank containers for bulk delivery. It falls under REACH regulation and is subject to strict handling requirements under the Seveso III Directive. Buyers should confirm grade specification and purity certificates prior to procurement.
Other Names
DichlorineChlorine mol.MeSH ID: D002713Diatomic chlorineMolecular chlorineChlorine molecule (Cl2)
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