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Silico® | FH20789 Hydride-Terminated Fluorosilicone Fluid
Silico® FH20789 (CAS 68952-30-7) is a hydride-terminated fluorosilicone with reactive Si–H groups, ideal for platinum-catalyzed curing. It offers fuel, oil, and solvent resistance, low surface energy, and thermal stability, making it suitable for elastomers, coatings, and sealants in aerospace and electronics.
Product Introduction
Silico® FH20789 (CAS 68952-30-7) is a high-performance hydride-terminated poly(trifluoropropylmethylsiloxane) fluid featuring reactive Si–H functional groups at the chain ends. This specialty fluorosilicone polymer is designed for use in platinum-catalyzed addition cure systems, enabling crosslinking with vinyl-functional polymers or surface modification of fillers.
Thanks to its trifluoropropyl side chains, Silico® FH20789 delivers excellent resistance to fuels, oils, solvents, and harsh chemicals, while maintaining low surface energy and outstanding thermal stability across a wide temperature range. It is especially suitable for the production of fuel-resistant silicone elastomers, high-performance coatings, sealants, and potting compounds used in aerospace, automotive, and electronic applications.
Technical Specifications
| Property | Value |
|---|---|
| Appearance | Clear to slightly hazy fluid |
| Chemical Structure | Hydride-terminated fluorosilicone |
| Functional Group | Si–H (Hydride) |
| CAS Number | 68952-30-7 |
| Molecular Structure | –[Si(CH₃)(CH₂CH₂CF₃)–O]– backbone |
| Viscosity @25°C | 100–1000 cSt (typical grades) |
| Hydrogen Content | 0.2–1.0 wt% (adjustable) |
| Flash Point | >250°C |
| Solubility | Soluble in aromatic & aliphatic solvents |
| Cure System | Platinum-catalyzed addition cure |
| Storage | Store in cool, dry place, sealed |
Key Features
Reactive Si–H groups for crosslinking
Excellent resistance to fuel, oil, and solvents
Wide operating temperature stability
Low surface energy and high compatibility
Ideal for RTVs, FSRs, and surface treatment
Applications
Fuel-resistant RTV silicone elastomers
Addition-cure fluorosilicone rubbers
Surface modifier for fillers or substrates
Encapsulants, coatings, and chemical-resistant sealants
Specialty adhesives and potting materials
Packaging & Storage
Packaging: Available in 20Kg, 50Kg, and 200Kg steel drums or fluorinated drums.
Storage: In original unopened packaging, shelf life is one year when stored in a dry and cool place.
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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