Terephthalaldehyde

Terephthalaldehyde (CAS 623-27-8), also known as terephthaldehyde, 1,4-phthalaldehyde, and p-phthalaldehyde, is a benzene dialdehyde with two reactive aldehyde groups positioned para to each other. It carries no assigned E-code and is catalogued under EC 210-784-8 with HS code 29122900.

In polymer synthesis, its bifunctional aldehyde structure enables crosslinking reactions and serves as a monomer in the production of polyimines and specialty resins. As an antimicrobial agent in pharmaceutical and personal care formulations, it disrupts microbial cell membranes through aldehyde-mediated protein crosslinking. It also functions as a fragrance and flavorant intermediate in food and cosmetic applications.

This material is supplied as a crystalline powder meeting commercial and research-grade specifications, with compliance documentation available for REACH-registered supply chains. Procurement teams should confirm applicable FCC or Ph.Eur. alignment based on end-use requirements. Standard packaging formats include fiber drums and multi-layer bags suited to moisture-sensitive solids.