Hexamethyldisiloxane (MM/HMDS)

Hexamethyldisiloxane is a colorless, volatile organosilicon compound widely used as an intermediate, solvent, and surface treatment agent in multiple industries. It features excellent chemical stability, low surface tension, high hydrophobicity, and good compatibility with various organic and inorganic systems.

HMDSO is commonly applied in silicone manufacturing, coatings, electronics, cosmetics, pharmaceuticals, and chemical synthesis, making it a versatile and high-demand specialty chemical.

Technical Specifications

Packaging and Storage

• Net weight 150kg steel drum or 750kg IBC tank.

• Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage.

Key Features of Hexamethyldisiloxane

• High purity and consistent quality

• Excellent hydrophobic and water-repellent properties

• Low viscosity and low surface tension

• Good thermal and chemical stability

• High volatility with fast evaporation rate

• Compatible with many organic solvents and polymers

Typical Applications of Hexamethyldisiloxane

Silicone and Polymer Industry

• A chain-stopping agent in silicone polymerization

• An intermediate for producing silicone fluids, resins, and elastomers

Surface Treatment and Coatings

• Provides hydrophobic and anti-fouling surfaces

• Used in plasma-enhanced chemical vapor deposition (PECVD) coatings

• Improves water repellency and surface smoothness

Electronics and Semiconductor Industry

• Precursor material for silicon oxide and silicon-based thin films

• Used in plasma processes for microelectronics and display manufacturing

Cosmetics and Personal Care

• Acts as a volatile silicone carrier

• Enhances spreadability and smooth skin feel

• Frequently used in skin care, hair care, and makeup formulations

Pharmaceuticals and Chemical Synthesis

• Used as a solvent or reagent in organic synthesis

• Functions as a protective or modifying agent in pharmaceutical processes

Frequently Asked Questions (FAQs)

Q: What is Hexamethyldisiloxane used for?

A: Hexamethyldisiloxane is used in silicone production, surface coatings, electronics manufacturing, cosmetics, and pharmaceutical synthesis due to its hydrophobicity, volatility, and chemical stability. 

Q: Is HMDSO soluble in water?

A: No. HMDSO is insoluble in water but readily soluble in most organic solvents.

Q: Is Hexamethyldisiloxane safe to use?

A: When handled according to safety guidelines and SDS instructions, HMDSO is safe for industrial applications. Proper ventilation and PPE are recommended.

Q: Can HMDS be used in cosmetic formulations?
A: Absolutely. It is widely used as a volatile silicone carrier in antiperspirants, deodorants, hair sprays, and skin creams due to its fast evaporation and dry feel.

Contact Us

For COA, TDS, MSDS or other products, please contact us at:

Email: mandy@aozunchem.com

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