1,6-Hexanediol

1,6-Hexanediol

CAS Number:629‑11‑8

Chemical Formula:C₆H₁₄O₂

Product Introduction

A white, hygroscopic crystalline diol with two terminal hydroxyl groups. Used as a flexible chain extender to enhance toughness in polyurethanes, polyesters (PBT), adhesives, and coatings. It's also a reactive diluent in acrylic formulations.

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Physical & Chemical Properties

Property Value
Melting Point 38–44 °C
Boiling Point ~250–253 °C
Density ~0.96–0.97 g/cm³
Solubility ~500 g/L in water, soluble in alcohols, miscible with organics
Flash Point ~102 °C
Vapor Pressure ~0.5 mmHg @20 °C

Applications

  • Chain extender/reactive diluent in polyurethanes, polyesters, adhesives, coatings
  • Precursor for acrylic monomers (hexanediol diacrylate)
  • Used in elastic fibers, plasticizers, photoresists

Safety & Handling

  • Irritant to skin, eyes, and respiratory tract (GHS: H315, H319, H335)
  • Combustible solid—avoid ignition sources and static; use PPE
  • Storage: Cool, dry (<30 °C), sealed container; hygroscopic so use inert packaging

Packing Options

  • Lab:25 g–1 kg bottles
  • Industrial: 25–200 kg drums, IBCs

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