CHLORINE WATER Chemical Compatibility

Chlorine Water is a dilute solution of chlorine in water containing hypochlorous acid (HOCl) and hydrochloric acid. It has a yellow-green tint and a strong chlorine odor. It is a powerful oxidizer and disinfectant, produced in chlorinators, scrubbers and chlor-alkali processes. It is used for water disinfection, bleaching, and metal and mineral processing. Chlorine water tanks need vapor control because chlorine gas escapes from solution. Use the compatibility ratings to choose the right tank resin, fittings and gaskets.

Safety data: Chlorine Safety Data Sheet (SDS) – Olin

At a glance

PVDF (Kynar®) is the recommended tank material for Chlorine Water, rated Good. Avoid polypropylene tanks, polypropylene fittings, Buna-N gaskets and aluminum hardware. Rated Fair (contact us before use): HDPE and nylon tanks; HDPE fittings; EPDM gaskets; 316 stainless steel hardware.

  • Excellent No or minor effect. Recommended.
  • Good Slight effect. Generally suitable.
  • Fair Moderate effect. Limited or conditional use — contact us.
  • Not Recommended Severe effect. Do not use.
  • No Data Not tested. Contact us before use.

Tank Resins

How Chlorine Water works with the plastics used to make our storage tanks.

Material Rating
HDPE Fair
Polypropylene Not Recommended
Nylon Fair
PVDF (Kynar®) Good

Fittings

How Chlorine Water works with the plastics used for tank fittings.

Material Rating
HDPE Fair
PVC Excellent
CPVC Excellent
Polypropylene Not Recommended
PVDF Good

Gaskets & O-Rings

How Chlorine Water works with gasket and O-ring materials.

Material Rating
Buna-N Not Recommended
EPDM Fair
Viton® Excellent

Metals

How Chlorine Water works with the metals used for fittings and bolts.

Material Rating
316 Stainless Steel Fair
Hastelloy Excellent
Titanium No Data
Aluminum Not Recommended

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