Hexamethyldisiloxane

Product Overview

Hexamethyldisiloxane (HMDSO), with the CAS number 107-46-0, is a colorless, transparent specialty silicone fluid widely utilized in industrial and advanced material applications. As a volatile methylsiloxane compound, it functions effectively as a capping agent, hydrophobing agent, and inorganic surface treatment reagent. Its high purity (≥99.0%) ensures consistent performance in sensitive chemical processes and formulations.

Specifications

Industrial Applications

Hexamethyldisiloxane is strategically employed across multiple high-value sectors due to its reactive yet controllable siloxane backbone. Key uses include:

• As a capping agent in organosilicon synthesis to terminate polymer chains and control molecular weight.
• A hydrophobing agent for modifying surfaces of fillers, pigments, and inorganic materials to enhance compatibility with organic matrices.
• An intermediate in the production of silicones, coatings, and release agents.
• A carrier or precursor in plasma-enhanced chemical vapor deposition (PECVD) for thin-film coatings.

Its volatility and reactivity make it ideal for applications requiring clean, residue-free processing under mild conditions.

Handling and Storage

Store in a cool, well-ventilated area away from heat, sparks, and open flames. Keep container tightly closed when not in use. Due to its low flash point, appropriate fire safety measures must be observed during handling and storage. Packaging is typically provided in 150 kg drums, with custom options available upon request.