Propionic Acid (Propanoic Acid)
English Name: propionic acid; propanoic acid
Propionic Acid Structural Formula: CH₃CH₂COOH
Molecular Formula: C₃H₆O₂
Physical and Chemical Properties
Propionic acid is a colorless liquid with a pungent odor.
Relative density: 0.992
Propionic Acid Melting point: -22°C
Propionic Acid Boiling point: 144.1°C
Refractive index: 1.3874
Miscible with water; soluble in ethanol, acetone, and diethyl ether.
Propionic Acid Flash point (open cup): 65.5°C
Ignition point: 485°C

Propionic Acid from Shandong Pulisi Chemical Co., Ltd.
Shandong Pulisi Chemical Co., Ltd. supplies high-quality industrial-grade propionic acid (CAS 79-09-4) tailored for global buyers across food preservatives, feed additives, coating fungicides, and organic synthesis sectors. Our propionic acid is manufactured under strict quality control, meeting both national and international purity standards, including ≥99.5% concentration for direct industrial use and custom formulations to suit specific client applications.
As a key organic acid intermediate, our propionic acid is widely used in the production of calcium propionate and sodium propionate—critical preservatives for baked goods and grains—while its esters serve as specialty solvents in paints and fragrances. It also acts as an effective silage additive to prevent mold growth in animal feed, supporting the agriculture industry with reliable and consistent supply.
Packaged in accordance with international logistics standards, our propionic acid is available in aluminum drums or lined steel tanks to maintain product stability and safety during transit. Backed by over two decades of export experience, we offer flexible order volumes, timely delivery, and dedicated technical support to meet the diverse needs of our partners worldwide.