1,6-hexanediol

1,6-Hexanediol (CAS 629-11-8), also known as hexamethylene glycol and abbreviated HDO, is a difunctional diol used as a monomer and reactive building block in polymer chemistry.

Where is 1,6-hexanediol used?

• Polyurethanes, polyesters and specialty resins: controlled chain extender and cross-linker via its two terminal hydroxyl groups
• Coatings: synthesis of polyester and polyurethane polyols for automotive and industrial topcoats
• Adhesives and sealants: chain extender in two-component polyurethane systems controlling hardness and open time
• Polycarbonate diol production for high-performance elastomers and thermoplastic polyurethanes
• Personal care: coupling agent and humectant in skin creams and hair conditioners, also contributing antimicrobial stabilization
• Pharmaceutical-grade material meeting USP or Ph. Eur. standards serves regulated applications.

Good to know: Purity levels are typically 99% or higher; technical and polymer grades are standard commercial specifications.

Commercial specifications

• Purity typically 99% or higher