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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Storage stability and reactivity towards container material

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Administrative data

Link to relevant study record(s)

Description of key information

For dry chlorine gas (20 mg H2O/kg), steel is the usual container material. For liquid and cold dry chlorine gas, fine grain carbon steel should be used, taking into account the possibility of depressurizing the system. For wet chlorine gas, the usual materials are titanium, rubber lined steel, glass reinforced polyester resins (GPR), PTFE lined steel, PVC externally reinforced with DRP and PVDF. Chlorine should not be transported in mild steel or aluminium under wet conditions.

Additional information

Materials of construction must be chosen to suit the conditions under which chlorine is being handled:
-wet or dry
-gaseous or liquid
-temperature and pressure


For dry chlorine gas (20 mg H2O/kg) steel is the usual material. For liquid and cold dry chlorine gas, fine grain carbon steel should be used, taking into account the possibility of depress-urizing the system.
For wet chlorine gas, the usual materials are titanium, rubber lined steel, glass reinforced polyester resins (GPR), PTFE lined steel, PVC externally reinforced with DRP and PVDF. Chlorine should not be transported in mild steel or aluminium under wet conditions.