Itaconic acid

Itaconic acid (CAS 97-65-4) is a bio-based unsaturated dicarboxylic acid produced through fungal fermentation, positioning it as a renewable alternative to petrochemical monomers in polymer synthesis. Its reactive double bond and dual carboxylic groups make it a sought-after building block for specialty resins, coatings, and superabsorbent materials used across various industrial sectors.

In polymer and resin manufacturing, it is copolymerized with acrylic acid, styrene, or vinyl acetate to modify adhesion, flexibility, and hydrophilicity in coatings, binders, and pressure-sensitive adhesives. Superabsorbent polymer producers incorporate it to tune water absorption performance in hygiene and agricultural products. In personal care, it functions as a co-monomer in film-forming polymers.

Food and flavor applications use it as an acidulant and flavoring agent, where its mild acidity profile suits beverage and confectionery systems requiring precise pH control and stability. The material is supplied as a white crystalline powder in bags, supersacks, and bulk quantities suited to industrial procurement volumes. Standard commercial grades include technical and FCC specifications.

Purity levels are typically at 99% or above for most applications. Fermentation-derived material dominates the market, and buyers should confirm feedstock origin with suppliers for bio-based claims.