Chlorine in brief

  • Powerful oxidant.
  • Transported quickly and efficiently.
  • Supplied as a liquid or gas.
  • Easy to dose.
  • Long-term stability.
  • Residual effect.

Packed Chlorine Ltd

  • Packed Chlorine Ltd owns and operates the only chlorine filling facility in the UK.
  • We keep significant levels of stocks on site of all pack sizes, filled and ready for delivery, ensuring our product is always available to meet demand.
  • Available pack sizes:
  • 33kg and 71kg cylinders (contain liquid chlorine but designed to supply gaseous chlorine only).
  • 860kg and 980kg drums (contain liquid chlorine but designed to supply both liquid and gaseous chlorine).
  • A dedicated fleet of specially designed vehicles along with highly trained drivers allows quick and efficient delivery to meet our customers needs.
  • Please contact for further information or if you require safety and technical data sheets.

About Chlorine

  • Exists as a gas at room temperature.
  • High oxidational potential.
  • Well established disinfectant.
  • Chlorination is necessary to prevent epidemics of waterborne diseases.
  • Produced by the electrolysis of brine.
  • When added to water, chlorine breaks down into hypochlorous acid, a powerful oxidant and disinfectant.
  • Stable element – when stored in sealed containers it has an indefinite shelf-life.
  • Key advantage of the use of chlorine in water treatment is its ability to persist in treated water. Its residual effect protects water from microbiological contamination when passing through lengthy networks.


  • CAS No: 7782-50-5
  • Molecular formula: Cl2
  • Molecular weight: 70.91 g/mol
  • Liquid density: 1.47 g/cm3 @ 0 °C
  • Solubility in water: 7.4 g/L (20 °C)
  • Melting point: – 101 °C
  • Boiling point: – 34 °C
  • Vapour pressure: 6.7 bar @ 20 °C
  • Vapour density: 2.48 (air = 1.0)

Industries & Applications

  • Drinking water and wastewater treatment – Disinfection
  • Plastics production (PVC).
  • Pharmaceuticals.
  • Paper and textile production.
  • Dyes and paint production.
  • Electronics.
  • Food production & handling.
  • Metal production.