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gamma-Mercaptopropyltriethoxysilane.
Synonym: 3-Triethoxysilypropylmercaptan

Countertype of DowCorning Z-6910, Silquest A-1891

Chemical Structure

Introduction

DP-A1891 is a bifunctional organosilane possessing a reactive organic mercapto and a hydrolyzable inorganic methoxysilyl group. DP-A1891 is a clear, colorless to light yellow liquid with a slightly mercaptan odor. It is soluble in alcohols, ketones and aliphatic or aromatic hydrocarbons.

Typical Physical Properties

Chemical Name:	3-Mercaptopropyltriethoxysilane
CAS No.:	14814-09-6
EINECS No.:	238-883-1
Empirical Formula:	C₉H₂₂O₃SSi
Molecular Weight:	238.42
Boiling Point:	210°C [760mmHg]
Flash Point:	88°C
Color and Appearance:	Clear to straw liquid with unpleasant odor of sulfide.
Density [25°C]:	0.993
Refractive Index [25°C]:	1.4331
Purity:	Min.98.0% by GC

Applications

DP-A1891 can be used as coupling agent to improve the adhesion of sulfur cured elastomers (polysulfide, polyurethane sealants) to inorganic fillers (such as silica, clay, glass, mica and talc etc.), fiberglass and surfaces. Mineral-reinforced articles such as shoe soles, rubber rollers and wheels, white sidewalls, and wire and cable insulation also can be produced with lower silane loadings.
DP-A1891 can be used to improve properties of mineral filled elastomer, including modulus, tensile and tear strength, heat buildup, abrasion resistance, resilience, compression set and cure time.
DP-A1891 can be used as a pretreatment on minerals or added at the time of compounding.

DP-A1891 can be used to improve low-rolling resistance in silica-reinforced tire tread compounds.

Packing

Net weight 200Kg steel drum or 1000Kg IBC container