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Tetrapropyl orthosilicate.
Synonym:Tetra-n-propoxysilane;
Tetrapropoxysilane;Tetrapropyl silicate

Chemical Structure

Introduction

SI-2083, [also called n-Propyl Silicate] is used as a cross-linking agent for silicon rubber, and as a modifying agent for organic and inorganic resins. The ethyl group of ethyl silicate is replaced by the N-propyl group, so the speed of hydrolysis is slower than ethyl silicate.

Typical Physical Properties

Chemical Name:	Tetrapropyl orthosilicate
CAS No.:	682-01-9
EINECS No.:	211-659-0
Empirical Formula:	C 12 H 28 O 4 Si
Molecular Weight:	264.43
Silica Content:	22.5%
Boiling Point:	225°C [760mmHg]
Flash Point:	98°C
Color and Appearance:	Colorless transparent liquid
Density [25°C]:	0.916
Refractive Index [25°C]:	1.401 [20°C]
Purity:	Min.99.0% by GC

Application

SI-2083 may be used as an inorganic binder for refractory fillers and pigments, like precision investment castings.
SI-2083may be used as a second backup casting coating. It cures faster than colloidal silica system.
SI-2083may be hydrolyzed to form silicon dioxide (silica).
SI-2083may be used as a binder in zinc-rich (corrosion resistant) coating.
SI-2083 may be used as a starting material for sol-gel process.
SI-2083may be used as a crosslinking agent for silicone sealant.
SI-2083may be used as a drying agent in sealing compositions.
SI-2083may be used as a chemical intermediate.