
OH-86 Hydroxy-Terminated Polydimethylsiloxane (PDMS)
Silico® Hydroxy-Terminated Polymethyltrifluoropropylsiloxane (CAS 63148-56-1) is a fluorinated silicone fluid with hydroxyl ends. It has strong chemical resistance, water and oil repellency, and good heat stability. Used in coatings, sealants, and fluoro-silicone elastomers, it can be crosslinked for surface modification.
Product Introduction:
Silico® Hydroxy-Terminated Polymethyltrifluoropropylsiloxane (CAS Number 63148-56-1) is a specialty fluorinated silicone fluid featuring terminal hydroxyl groups. This unique combination imparts excellent chemical resistance, low surface energy, and enhanced hydrophobic and oleophobic properties. The presence of trifluoropropyl groups on the siloxane backbone gives this polymer superior performance in demanding applications requiring weatherability, oil repellency, and thermal stability.
This functional silicone oil is widely used in the formulation of high-performance coatings, sealants, and advanced material composites. Its reactive hydroxyl terminals allow for further crosslinking and surface modification, making it ideal for fluoro-silicone elastomers and specialty coatings.
Technical Data
Parameter | Typical Value |
---|---|
Chemical Name | Hydroxy-Terminated Polymethyltrifluoropropylsiloxane |
CAS Number | 63148-56-1 |
Appearance | Clear to slightly yellow transparent liquid |
Viscosity (@25 °C) | Typically 10–50 mPa·s |
Density (@25 °C) | Approx. 1.05 g/cm³ |
Refractive Index (nD @20 °C) | ~1.40 |
Functional Groups | Hydroxyl (-OH) terminal, trifluoropropyl side chains |
Solubility | Soluble in organic solvents, insoluble in water |
Storage Conditions | Store in sealed containers, below 30 °C, away from moisture |
Key Features & Benefits
Fluoro-functional group provides superior oil and stain resistance
Hydroxyl termination enables easy crosslinking and grafting in silicone networks
Excellent thermal stability and weather resistance
Low surface energy for hydrophobic and oleophobic coatings
Enhances chemical resistance to solvents and aggressive environments
Compatible with various silicone and polymer systems for versatile applications
Typical Applications
High-performance fluorosilicone elastomers and rubbers
Specialty hydrophobic and oleophobic coatings for automotive and electronics
Surface modifiers for anti-fingerprint and anti-soiling treatments
Sealants and adhesives with enhanced durability and chemical resistance
Composite materials requiring improved weatherability and solvent resistance
Packaging Options:
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1 kg bottles for lab and R&D use
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20 kg pails and 200 kg drums for industrial bulk applications
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1000 kg IBC containers for large-scale production
All technical data provided is based on current knowledge and experience. Users must test product suitability for intended applications.
No warranties are expressed or implied. Silico® assumes no liability for incidental or consequential damages.

Jessica G.
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