MURIATIC ACID 37% & Polypropylene Compatibility

Muriatic acid is another name for Hydrochloric acid. Muriatic Acid is an aqueous solution of hydrogen chloride gas. Hydrochloric acid is an important and widely used chemical. The largest end uses for hydrochloric acid are steel pickling, oil well acidizing, food manufacturing, producing calcium chloride, and ore processing. Hydrochloric Acid is very toxic and extremely corrosive. In concentrations above 20%, consider a bolted, sealed manway to keep fumes from escaping. The use of a fume scrubber should be seriously considered.

PVDF temperature limit: 275°F (135°C). That is Arkema’s maximum use temperature for Kynar Flex® 2850 PVDF, the resin we mold, with Hydrochloric Acid (Up to “concentrated”). Arkema’s limits are for solid resin at atmospheric pressure and do not account for mixtures. Source: Arkema Kynar® PVDF chemical resistance chart. Confirm your application with Bailiff before ordering.

At a glance

HDPE is the most economical tank material for Muriatic Acid 37%, rated Excellent. PVDF (Kynar®) is also rated Good or better. Avoid nylon tanks; 316 stainless steel and aluminum hardware. Rated Fair (contact us before use): polypropylene tanks, polypropylene fittings and EPDM gaskets.

  • 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 Muriatic Acid 37% works with the plastics used to make our storage tanks.

Material Relative cost Rating
HDPE $ Excellent
Polypropylene $$ Fair
Nylon $$$ Not Recommended
PVDF (Kynar®) $$$$ Excellent

Fittings

How Muriatic Acid 37% works with the plastics used for tank fittings.

Material Rating
HDPE Excellent
PVC Good
CPVC Excellent
Polypropylene Fair
PVDF Excellent

Gaskets & O-Rings

How Muriatic Acid 37% works with gasket and O-ring materials.

Material Rating
Buna-N Good
EPDM Fair
Viton® Excellent

Metals

How Muriatic Acid 37% works with the metals used for fittings and bolts.

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

Request a Polypropylene Tank Quote

Storing this chemical in polypropylene?

Tanks & Fittings Built for It

Polypropylene tanks from 25 to 6,000 gallons with polypropylene fittings installed. Confirm concentration and temperature with us before you order.

Tell Us What You’re Storing

Send the chemical, concentration, temperature and size. We’ll match the tank and fittings and send a quote.