Silane Coupling Agents | Ureido Silanes | Surface Modifiers

SiSiB® PC2520 & PC2521

3-Ureidopropyltriethoxysilane 50% solution in Methanol.
Synonym: N-(Triethoxysilylpropyl)urea 50% solution in Methanol

Countertype of Dynasylan 2201, DowCorning Z-6676, ShinEtsu KBE-585, Silquest A-1160

Chemical Structure


Ureidofunctional silane have better stability than aminosilanes in reactive polymer systems, like phenolic, epoxy, urea-melamine or polyurethane.
Ureidofunctional silane does not generate color with time and aging.
Ureidofunctional silane provides nitrogen reactivity without typical aminosilanes strong basic characteristics.
Ureidofunctional silane have good adhesive and sealant adhesion to oil metals.

Typical Physical Properties

Chemical Name: gamma-Ureidopropyltriethoxysilane [23779-32-0]
CAS No.: 116912-64-2
EINECS No.: 245-876-7
Empirical Formula: C10H24N2O4Si
Molecular Weight: 264.39
Boiling Point: 68°C [760mmHg] (initial, methanol)
Flash Point: 13°C
Color and Appearance: Colorless clear liquid with alcohol-like odor
Density [25°C]: 0.92
Refractive Index [25°C]: 1.39
Purity: 50% solution in Methanol


It can improve adhesion between the inorganic filler or fiber and the polymer.

It can be used for glass fiber sizes and finishes, wool insulation resin binders, numerous primers, foundry sand binders, adhesives, sealants and abrasive grinding wheel binders.


Net weight 210L steel drum or 1000L IBC container, for more details, please visit Packing Centre.

Technical Library

Download Technical Data Sheet Safety Data Sheet


Download 2010 SiSiB® SILANE Catalogue