Hexabromocyclododecane

Hexabromocyclododecane (CAS 25637-99-4), commercially known as HBCD, is an additive flame retardant used primarily in thermoplastic and foam-based materials.

Where is Hexabromocyclododecane used?

• Building and construction: incorporated into expanded and extruded polystyrene insulation boards meeting fire performance standards for wall, roof, and floor assemblies
• Textiles and upholstery: back-coatings on fabrics where flame resistance is a regulatory requirement, for commercial interiors and transportation seating
• Electronics: housings and enclosures achieving UL 94 or equivalent fire ratings in injection-molded or extruded plastic components
• Paper and board laminates for construction packaging comply with specific fire classification requirements.

Good to know: It functions by interrupting combustion cycles in polymer matrices, reducing flammability without chemical bonding to the substrate.

Commercial specifications

• Mixed isomers form is the standard commercial specification
• Technical-grade material characterized by bromine content and thermal stability
• Bulk bags and drummed packaging