Description

1,3-Bis(4-Chlorobutyl)-1,1,3,3-Tetramethylpropanedisiloxane is a high-purity organosilicon intermediate featuring reactive chlorobutyl termini. This compound matters for its role as a versatile building block in the synthesis of advanced silicone polymers and functional materials, offering a unique combination of siloxane flexibility and alkyl halide reactivity. It is primarily needed by R&D chemists and production engineers in the silicone elastomer, specialty adhesive, and pharmaceutical intermediate sectors seeking to develop products with tailored properties.

Application

• Silicone Polymer Modification: Acts as a chain extender or cross-linker to introduce chlorobutyl functional groups into polydimethylsiloxane (PDMS) backbones, modifying mechanical and surface properties.
• Specialty Silicone Elastomers: Used in the formulation of heat-curable or room-temperature-vulcanizing (RTV) silicone rubbers with enhanced adhesion to substrates.
• Pharmaceutical & Agrochemical Intermediates: Serves as a key synthon for constructing complex molecules where the siloxane moiety imparts specific lipophilicity or release characteristics.
• Surface Treatment Agents: Employed in the production of silylating agents for surface modification of silica, glass, or metals to alter wettability and compatibility.
• Adhesive & Sealant Formulations: Incorporated to improve the bonding performance and environmental resistance of high-performance silicone-based adhesives.
• Lubricant & Grease Additives: Functions as a precursor for synthesizing silicone-based additives that enhance the performance of industrial lubricants.

Basic Information

Product Name	1,3-Bis(4-Chlorobutyl)-1,1,3,3-Tetramethylpropanedisiloxane
CAS No.	72066-91-2
Molecular Formula	C15H34Cl2O2Si2
Molecular Weight	381.51 g/mol
Synonyms	1,3-Bis(4-chlorobutyl)-1,1,3,3-tetramethyldisiloxane; 1,1,3,3-Tetramethyl-1,3-bis(4-chlorobutyl)disiloxane; Propanedisiloxane, 1,3-bis(4-chlorobutyl)-1,1,3,3-tetramethyl-; Tetramethylbis(4-chlorobutyl)disiloxane; Bis(4-chlorobutyl)tetramethyldisiloxane; Chlorobutyl-terminated tetramethyldisiloxane; Siloxane intermediate 72066-91-2
EINECS	Contact for details

Quality Control

Our 1,3-Bis(4-Chlorobutyl)-1,1,3,3-Tetramethylpropanedisiloxane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatography and spectroscopy, to ensure high chemical purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided to guarantee compliance with your specific R&D or production requirements.

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 bases and incompatible materials such as strong oxidizing agents. The product is moisture-sensitive; ensure containers are sealed when not in use to prevent degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Chlorine Content	18.0 - 19.0 %
Water Content (KF)	≤ 0.1 %

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