Tetramethyldisiloxane (TMDSO)

Tetramethyldisiloxane (TMDSO) is a crucial organosilicon compound with the chemical formula (CH₃)₂HSi-O-SiH(CH₃)₂. It presents as a clear, colorless liquid, characterized by low viscosity, high volatility, and excellent chemical stability. The unique aspect of TMDSO lies in its molecular structure, which contains two active silicon-hydrogen (Si-H) bonds. This feature makes it a versatile chemical intermediate, demonstrating superior performance in a wide range of reactions.

Basic Information of Tetramethyldisiloxane

CAS No.:	3277-26-7
EC No.:	221-906-4
Linear Formula:	(CH₃)₂HSi-O-SiH(CH₃)₂
Molecular Weight:	134.32
Appearance:	Transparent Liquid
Melting Point:	<-78°C
Boiling point:	70-71 °C (lit.)
Density:	0.76 g/mL at 25 °C (lit.)
Solubility:	Soluble in Chloroform
Flash Point:	14 °F
RIDADR:	UN 2924 3/PG 2
Chemical Structure:

Applications of TMSO

Due to its distinctive chemical structure and reactivity, TMDSO plays a pivotal role in numerous industrial sectors and research applications:

• Organosilicon Materials:

• An essential monomer or cross-linking agent for hydrosilylation reactions, used in the synthesis of various organosilicon polymers, silicone rubbers, and silicone resins.

• Utilized in the preparation of functional organosilicon materials with specialized properties.

• Pharmaceutical and Agrochemical Intermediates:

• Serves as an important silylating agent, used to protect or modify organic molecules containing hydroxyl, amino, and other functional groups.

• Acts as a reducing agent or a reactant for specific reactions in drug synthesis.

• Fine Chemicals:

• Employed as a coupling agent to enhance interfacial adhesion between inorganic fillers and organic polymers.

• Used as a selective reducing agent in certain organic synthesis reactions.

• Can function as a diluent or solvent for specific systems.

• Analytical Applications:

• Can be used as a gas chromatography (GC) stationary phase for the separation and analysis of organic compounds.

• Used as a reference substance or a solvent component in Nuclear Magnetic Resonance (NMR) spectroscopy.

• Surface Treatment:

• Applied for the hydrophobization of material surfaces, improving their water repellency.

• Exceptional Quality: We commit to providing high-purity TMDSO, ensuring consistency and success in your experiments and production processes.

• Reliable Supply: Consistent production capabilities and inventory ensure timely delivery, supporting your production schedules.

• Expert Technical Support: Our professional team is readily available to provide product information and technical consultation.

Hazards Classification

• GHS Classification: Flammable Liquid (GHS02), Exclamation Mark (GHS07)

• Hazard Statements: Highly flammable liquid and vapor; may cause skin and eye irritation.

• UN Number: UN 2924

• Hazard Class: 3 (Flammable Liquids)

• Packing Group: II