Description

Polydimethylsiloxane, Monocarbinol Terminated, Viscosity 15-20 Cst is a reactive silicone fluid featuring a hydroxyl (-OH) group at one end of the polymer chain, making it a versatile chemical intermediate. This unique monocarbinol termination provides a reactive site for further chemical modification, enabling the synthesis of custom silicone-based materials. It is essential for manufacturers in the personal care, coatings, and specialty chemical industries seeking to develop high-performance, tailored products with specific surface-active or release properties.

Application

• Silicone Surfactant & Emulsifier Synthesis: A key raw material for producing non-ionic silicone surfactants used in polyurethane foam stabilization and personal care emulsions.
• Silicone-Modified Polymers: Acts as a macromonomer or chain extender in the production of silicone-polyethers, silicone-acrylates, and other hybrid polymers for coatings and adhesives.
• Release Coatings & Lubricants: Used as a precursor in formulating durable, non-transfer release coatings for pressure-sensitive adhesives and industrial lubricants.
• Personal Care Ingredients: Serves as an intermediate for creating specialty conditioning agents, emulsifiers, and texturizers in cosmetics and haircare products.
• Fiber & Textile Treatment: Employed in the synthesis of softeners and water-repellent finishes for fabrics and nonwovens.
• Crosslinking Agent: Functions as a reactive component in condensation-cure silicone systems, contributing to network formation.

Basic Information

Product Name	Polydimethylsiloxane, Monocarbinol Terminated, Viscosity 15-20 Cst
CAS No.	189518-97-6
Molecular Formula	CnH2n+2O2Sin (n~3-5)
Molecular Weight	~ 400 - 600 g/mol (Average)
Synonyms	Monohydroxy Terminated Polydimethylsiloxane; α-Hydro-ω-hydroxy-polydimethylsiloxane; PDMS Monocarbinol; Silicone Fluid, Monofunctional Hydroxy Terminated; Hydroxyalkyl-Terminated Silicone Oil; Monofunctional Polydimethylsiloxanol; OH-Terminated PDMS (mono); Silanol-Terminated PDMS (mono)
EINECS	Contact for details

Quality Control

Our Polydimethylsiloxane, Monocarbinol Terminated is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent viscosity, hydroxyl value, and purity, meeting precise customer specifications. Certificates of Analysis (COA) detailing key parameters 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 and organic solvents. Under these conditions, the product is typically stable for at least 24 months from the date of manufacture.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Viscosity @ 25°C	15 - 20 cSt
Hydroxyl Value (OH#)	Contact for details
Specific Gravity @ 25°C	0.95 - 0.98
Refractive Index @ 25°C	1.400 - 1.410
Water Content	< 0.1% (by Karl Fischer)
Identification (IR)	Conforms to structure

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