Hexamethylcyclotrisiloxane

Hexamethylcyclotrisiloxane (CAS 541-05-9), commonly identified in trade as D3, is a cyclic siloxane monomer used as a reactive building block in silicone polymer synthesis.

Where is Hexamethylcyclotrisiloxane used?

• Silicone polymer manufacturing: ring-opening monomer for PDMS chains with controlled molecular weight
• Coatings and release liners: low surface energy, controlled slip and substrate adhesion
• Adhesives, sealants and elastomers: cross-linked silicone networks with defined cure characteristics and long-term flexibility
• Personal care: deposition aid and film-forming precursor in skin-conditioning and hair care formulations
• It serves as a precursor for specialty silicone materials.

Commercial specifications

• Purity specifications typically ranging from 98% to 99%+
• Technical and high-purity grades
• Packaging in sealed containers to prevent moisture exposure
• Bulk and drum quantities for industrial procurement