Description

1,3-Bis(3-Chloropropyl)Tetramethyldisiloxane is a bifunctional organosilicon compound featuring reactive chloropropyl groups. This chemical serves as a versatile intermediate for the synthesis of advanced silicone polymers and functional materials. It is primarily utilized by manufacturers in the silicone elastomer, adhesive, and specialty chemical industries seeking to introduce reactive sites or modify surface properties.

Application

• Silicone Crosslinking Agent: A key intermediate for synthesizing crosslinkers and chain extenders in heat-cured silicone rubber (HCR) and liquid silicone rubber (LSR).
• Surface Modification Precursor: Used to create functional silanes for surface treatment of fillers (e.g., silica) to improve compatibility in polymer composites.
• Pharmaceutical & Agrochemical Intermediates: Serves as a building block for introducing siloxane spacers or functional groups into active molecules.
• Adhesive & Sealant Formulations: Imparts adhesion promotion and flexibility when incorporated into silicone-based adhesive systems.
• Specialty Polymer Synthesis: Employed in the production of modified polysiloxanes with specific mechanical, thermal, or chemical resistance properties.
• Research & Development: Used in academic and industrial R&D for exploring new silicone hybrids and dendritic structures.

Basic Information

Product Name	1,3-Bis(3-Chloropropyl)Tetramethyldisiloxane
CAS No.	18132-72-4
Molecular Formula	C10H24Cl2OSi2
Molecular Weight	287.37 g/mol
Synonyms	1,3-Bis(3-chloropropyl)-1,1,3,3-tetramethyldisiloxane; Bis(3-chloropropyl)tetramethyldisiloxane; 1,1,3,3-Tetramethyl-1,3-bis(3-chloropropyl)disiloxane; 3-Chloropropyl-terminated polydimethylsiloxane (dimer); Disiloxane, 1,3-bis(3-chloropropyl)-1,1,3,3-tetramethyl-; Tetramethylbis(3-chloropropyl)disiloxane; Chloropropyl functional disiloxane
EINECS	242-052-5

Quality Control

Our 1,3-Bis(3-Chloropropyl)Tetramethyldisiloxane is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including assay, identity confirmation, and impurity profiling, to ensure it meets precise customer specifications and industry standards. Certificates of Analysis (COA) documenting purity, physical properties, and test results are available for every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids, bases, and oxidizing agents. Recommended storage temperature is between 15°C and 25°C. Keep container tightly sealed when not in use to prevent moisture absorption.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Refractive Index (n20D)	1.4480 - 1.4520
Density (20°C)	1.00 - 1.05 g/mL
Chlorine Content	Contact for details

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