PVDF tanks by Bailiff Enterprises · Willis, Texas936-228-1520
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FORMIC ACID & PVDF Compatibility

Formic Acid (HCOOH, CAS 64-18-6) is a clear, colorless liquid with a sharp, pungent odor, a specific gravity of about 1.22 (85% to 99% grades) and a boiling point near 214°F (101°C). It is corrosive and combustible. Formic acid is used in leather tanning, textile dyeing, silage and feed preservation, rubber latex coagulation, de-icing formates and oilfield acidizing. Use the compatibility ratings to choose the right tank resin, fittings and gaskets.

PVDF temperature limit: 250°F (120°C). That is Arkema’s maximum use temperature for Kynar Flex® 2850 PVDF, the resin we mold, with Formic Acid (Aqueous solution or liquid). 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 Formic Acid, rated Excellent. Polypropylene and PVDF (Kynar®) are also rated Good or better. Avoid nylon tanks. Rated Fair (contact us before use): Buna-N and Viton® 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 Formic Acid works with the plastics used to make our storage tanks.

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

Fittings

How Formic Acid works with the plastics used for tank fittings.

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

Gaskets & O-Rings

How Formic Acid works with gasket and O-ring materials.

Material Rating
Buna-N Fair
EPDM Excellent
Viton® Fair

Metals

How Formic Acid works with the metals used for fittings and bolts.

Material Rating
316 Stainless Steel Excellent
Hastelloy Excellent
Titanium No Data
Aluminum Excellent

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Storing this chemical in PVDF?

Tanks & Fittings Built for It

PVDF tanks from 25 to 5,000 gallons with fittings installed. Confirm concentration and temperature with us before you order.

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

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