PHOSPHORIC ACID (<40%) Chemical Compatibility

Phosphoric Acid is used for fertilizer and also in the food industry (oil, beverages, cheese, canned food, yeast, sugar, water) and other industries (pharmacy, detergents, animal feed, metal treatment, textile, pigments…)

At a glance

HDPE is the most economical tank material for Phosphoric Acid (<40%), rated Excellent. Polypropylene, nylon and PVDF (Kynar®) are also rated Good or better. Rated Fair (contact us before use): 316 stainless steel and aluminum 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 Phosphoric Acid (<40%) works with the plastics used to make our storage tanks.

Material Rating
HDPE Excellent
Polypropylene Excellent
Nylon Good
PVDF (Kynar®) Good

Fittings

How Phosphoric Acid (<40%) works with the plastics used for tank fittings.

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

Gaskets & O-Rings

How Phosphoric Acid (<40%) works with gasket and O-ring materials.

Material Rating
Buna-N No Data SEVERE EFFECT
EPDM Good
Viton® Excellent

Metals

How Phosphoric Acid (<40%) works with the metals used for fittings and bolts.

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