GP-657 Amine / Alkoxy Functional Silicone Fluid

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GP-657 is an Amine/Alkoxy Functional Silicone Fluid where x=46.

The combination of amine and alkoxy groups suggests primary applications in mold-release agents and detergent resistant polishes. GP-657 is 100% active and can also be used in water repellent formulations or in organic/silicone copolymer synthesis. Some of the special features of GP-657 are listed below:

  • 100% Reactive Silicone
  • Moisture Curable
  • Detergent Resistant
  • Excellent Adhesion Properties
Typical Properties
Clear to Slightly Hazy Liquid
Weight/Gallon @ 25°C
8.0 lbs
Viscosity (cPs) @ 25°C
120 cP
Flash Point (P.M.C.C.)
Specific Gravity
Wt. % Silicone
Recommended Diluents
Aromatic and Aliphatic Solvents, Esters, Ketones
Amine Number *
Molecular Weight (Calculated)
3700 amu
Refractive Index
* milliliters of 0.1N HCl needed to neutralize 10 gms of product


  • Car Polishes
  • Vinyl Conditioners
  • Water Repellents
  • Rust Inhibitor Additive
  • Leather Treatment
  • Textile Lubricants
  • Organic/Silicone Copolymer Synthesis

Processing and Safety Guidelines

GP-657 shows a very rapid conversion to crosslinked silicone rubber when exposed to atmospheric moisture. When mixing with solvents, fillers and other materials, make sure that dry conditions are maintained. Containers of GP-657 must be tightly sealed in storage and pressurized slightly with dry nitrogen when transferring or before resealing.


GP-657 is supplied in 5-gallon (40 lbs.) pails, 55-gallon (440 lbs.) drums and 330-gallon (2640 lbs.) totes. GP-657 is Moisture Sensitive, keep containers tightly sealed when not in use.