Description

Monodicarbinol Terminated Polydimethylsiloxane is a specialized organosilicon compound featuring a reactive carbinol (hydroxyl) group at one terminus of a polydimethylsiloxane (PDMS) chain. This unique structure provides a versatile platform for chemical modification, enabling the creation of custom silicone-based materials with tailored properties. It is essential for R&D chemists and formulators in industries requiring advanced silicone intermediates for surface modification, polymer synthesis, and specialty additive development.

Application

• Silicone Copolymer Synthesis: Acts as a key macromonomer or chain extender for creating block and graft copolymers with organic polymers like polyurethanes, polyesters, or epoxies.
• Surface Modification Agent: Used to impart permanent hydrophobicity, lubricity, and release properties to surfaces of textiles, paper, and plastics.
• Specialty Additive Precursor: Serves as a reactive intermediate for synthesizing custom silicone surfactants, defoamers, and flow control agents.
• Crosslinking Agent: Functions as a reactive component in moisture-curable or condensation-cure silicone resin systems.
• Biomaterial and Medical Device Fabrication: Employed in R&D for creating biocompatible coatings and silicone-organic hybrid materials with specific surface energies.
• Adhesive & Sealant Formulation: Used to modify the properties of adhesives and sealants, enhancing flexibility, weatherability, and adhesion to low-energy substrates.

Basic Information

Product Name	Monodicarbinol Terminated Polydimethylsiloxane
CAS No.	218131-11-4
Molecular Formula	CnH2n+2O2Sin (Variable, based on chain length)
Molecular Weight	Variable (Contact for details on specific grade/viscosity)
Synonyms	α-Hydroxy-ω-methyl Polydimethylsiloxane; Monohydroxy Terminated PDMS; PDMS Monocarbinol; Hydroxy-Functional Polydimethylsiloxane; Silanol-Terminated PDMS (mono); Poly(dimethylsiloxane), monohydroxy terminated; Monofunctional Hydroxy Silicone Fluid; Mono-Carbinol PDMS
EINECS	Contact for details

Quality Control

Our Monodicarbinol Terminated Polydimethylsiloxane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure consistent functionality, purity, and molecular weight distribution. Key parameters such as hydroxyl value, viscosity, and residual catalyst levels are monitored. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

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. Under these conditions, the product is stable for at least 24 months from the date of manufacture.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Viscosity (25°C)	Specified grade (cSt)
Hydroxyl Value (OH#)	Specified range (mg KOH/g)
Assay (Functional Group)	≥ 95.0%
Water Content (KF)	≤ 0.1%
Volatile Matter	≤ 1.0%

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