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CAS 63148-56-1 Silicones Fluid

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:

  • 1 kg bottles for lab and R&D use

  • 20 kg pails and 200 kg drums for industrial bulk applications

  • 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.

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