Chlorine, Anhydrous Liquid (Cl2, CAS 7782-50-5) is a greenish-yellow, highly toxic gas that is shipped as a liquid under pressure. It boils at -29°F (-34°C) and has a liquid specific gravity of about 1.47. It is used in water disinfection, PVC production, titanium dioxide, pulp bleaching and many chemicals. Anhydrous chlorine must be kept in rated pressure vessels such as cylinders, ton containers and rail cars, not atmospheric storage tanks. Use the compatibility ratings to choose the right tank resin, fittings and gaskets.
Safety data: Chlorine Safety Data Sheet (SDS) – Olin
PVDF (Kynar®) is the recommended tank material for Chlorine, Anhydrous Liquid, rated Excellent. Avoid polypropylene and nylon tanks; PVC, CPVC and polypropylene fittings; Buna-N gaskets; Hastelloy and aluminum hardware. Rated Fair (contact us before use): HDPE tanks, HDPE fittings and 316 stainless steel hardware.
How Chlorine, Anhydrous Liquid works with the plastics used to make our storage tanks.
| Material | Rating |
|---|---|
| HDPE | |
| Polypropylene | |
| Nylon | |
| PVDF (Kynar®) |
How Chlorine, Anhydrous Liquid works with the plastics used for tank fittings.
| Material | Rating |
|---|---|
| HDPE | |
| PVC | |
| CPVC | |
| Polypropylene | |
| PVDF |
How Chlorine, Anhydrous Liquid works with gasket and O-ring materials.
| Material | Rating |
|---|---|
| Buna-N | |
| EPDM | |
| Viton® |
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