Description

2,4,6,8-Tetrabutyl-2,4,6,8-Tetramethylcyclotetrasiloxane is a high-purity organosilicon compound belonging to the cyclotetrasiloxane family. This specialty chemical serves as a versatile building block and intermediate for synthesizing advanced silicone polymers and functional materials. It is essential for manufacturers in the silicone elastomer, resin, and specialty lubricant industries seeking to modify material properties such as hydrophobicity, thermal stability, and rheology.

Application

• Silicone Polymer Synthesis: A key monomer or intermediate for producing modified polydimethylsiloxanes (PDMS) and other silicone copolymers.
• Release Agents & Mold Lubricants: Used in formulations for high-temperature mold release applications in rubber and plastics manufacturing.
• Surface Modification: Imparts hydrophobic and oleophobic properties to surfaces in coatings and textile treatments.
• Specialty Greases & Lubricants: Acts as a base fluid or additive in high-performance lubricants requiring extreme temperature stability and low volatility.
• Adhesive & Sealant Formulations: Incorporated to adjust cross-linking density and improve the flexibility and durability of silicone-based adhesives and sealants.
• Pharmaceutical & Cosmetic Intermediates: Serves as a precursor for synthesizing silicone derivatives used in personal care and controlled-release drug delivery systems.

Basic Information

Product Name	2,4,6,8-Tetrabutyl-2,4,6,8-Tetramethylcyclotetrasiloxane
CAS No.	14685-29-1
Molecular Formula	C20H48O4Si4
Molecular Weight	468.92 g/mol
Synonyms	2,4,6,8-Tetramethyl-2,4,6,8-tetrabutylcyclotetrasiloxane; Tetramethyltetrabutylcyclotetrasiloxane; Cyclotetrasiloxane, 2,4,6,8-tetramethyl-2,4,6,8-tetrabutyl-; D4-Bu4; Tetrabutyltetramethylcyclotetrasiloxane; 1,3,5,7-Tetrabutyl-1,3,5,7-tetramethylcyclotetrasiloxane
EINECS	Contact for details

Quality Control

Our 2,4,6,8-Tetrabutyl-2,4,6,8-Tetramethylcyclotetrasiloxane is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including chromatography (GC/HPLC) and spectroscopy (NMR, IR), to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical specifications are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong acids, bases, and oxidizing agents. For long-term storage, consider an inert atmosphere (nitrogen) to maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Refractive Index (n20D)	1.430 - 1.440
Density (20°C)	0.92 - 0.96 g/mL

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