MALIC ACID Chemical Compatibility

Malic acid is a tart-tasting organic dicarboxylic acid that plays a role in many sour or tart foods. In its ionised form it is malate, an intermediate of the TCA cycle along with fumarate. It can also be formed from pyruvate as one of the anaplerotic reactions.

At a glance

Polypropylene is the most economical tank material for Malic Acid, rated Excellent. Nylon, PVDF (Kynar®) and HDPE are also rated Good or better. Avoid 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 Malic Acid works with the plastics used to make our storage tanks.

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

Fittings

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

Material Rating
HDPE Good
PVC Excellent
CPVC No Data
Polypropylene Excellent
PVDF Excellent

Gaskets & O-Rings

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

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

Metals

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

Material Rating
316 Stainless Steel Excellent
Hastelloy Good
Titanium Excellent
Aluminum Good