Description

Decamethyltetrasiloxane is a linear, low molecular weight organosilicon compound, specifically a tetrasiloxane. This clear, volatile liquid serves as a fundamental building block and intermediate in silicone chemistry, prized for its reactivity and versatility. It is essential for manufacturers in the silicone polymer, personal care, and specialty chemical industries seeking to create custom siloxane structures or modify material properties.

Application

• Silicone Intermediate: A key precursor and chain extender in the synthesis of polydimethylsiloxanes (PDMS) and other silicone polymers and copolymers.
• Personal Care & Cosmetics: Used as a volatile carrier or diluent in antiperspirants, deodorants, and hair care products, where it evaporates without residue.
• Lubricants & Greases: Acts as a base fluid or additive in specialty high-performance lubricants and silicone greases.
• Surface Treatment: Employed in formulations for water repellents, release agents, and surface modifiers for textiles, paper, and construction materials.
• Chemical Synthesis: Serves as a starting material or reactant for producing functional silanes, siloxane derivatives, and cross-linking agents.
• Electronics: Used in heat transfer fluids and as a component in protective coatings for sensitive electronic components.

Basic Information

Product Name	Decamethyltetrasiloxane
CAS No.	141-62-8
Molecular Formula	C10H30O3Si4
Molecular Weight	310.69 g/mol
Synonyms	MD2M; Tetrakis(trimethylsiloxy)silane; 1,1,1,3,5,5,5-Heptamethyl-3-(trimethylsilyloxy)trisiloxane; Decamethyl-1-oxa-2,5,8,9-tetrasiladecane; L2; Linear Tetrasiloxane; Octamethyltrisiloxane, dimer; Bis(trimethylsiloxy)dimethylsiloxane
EINECS	205-491-7

Quality Control

Our Decamethyltetrasiloxane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including Gas Chromatography (GC), to ensure high purity and consistency. Certificates of Analysis (COA) detailing assay, identity, and impurity profiles are provided with every shipment to guarantee compliance with your specific requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Recommended storage temperature is between 15°C and 25°C. Due to its volatile nature, keep containers tightly sealed when not in use.

Specification

Item	Specification
Appearance	Colorless clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Refractive Index (n20D)	1.3890 - 1.3910
Density (20°C)	0.853 - 0.857 g/mL
Water Content	≤ 0.05%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.