ChemicalBook Product Catalog Chemical Reagents Organic reagents Silane 3-Mercaptopropyltriethoxysilane

3-Mercaptopropyltriethoxysilane

Product Name3-Mercaptopropyltriethoxysilane
CAS14814-09-6
MFC9H22O3SSi
MW238.42
EINECS238-883-1
MOL File14814-09-6.mol

Chemical Properties

Boiling point	210 °C
Density	0.987 g/mL at 20 °C (lit.)
vapor pressure	0-7910Pa at 25℃
refractive index	1.4331
Flash point	88°C
storage temp.	2-8°C
form	clear liquid
pka	10.39±0.10(Predicted)
Specific Gravity	0.932
color	Colorless to Almost colorless
Water Solubility	Hydrolyzes slowly in water.
Hydrolytic Sensitivity	7: reacts slowly with moisture/water
Sensitive	Moisture Sensitive
BRN	2039575
InChI	1S/C9H22O3SSi/c1-4-10-14(11-5-2,12-6-3)9-7-8-13/h13H,4-9H2,1-3H3
InChIKey	DCQBZYNUSLHVJC-UHFFFAOYSA-N
SMILES	CCO[Si](CCCS)(OCC)OCC
LogP	-1.4-2.7 at 20℃
CAS DataBase Reference	14814-09-6(CAS DataBase Reference)
EPA Substance Registry System	1-Propanethiol, 3-(triethoxysilyl)- (14814-09-6)

Safety Information

Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26-36
RIDADR	UN 3334
WGK Germany	3
RTECS	TZ7760000
F	10-13
TSCA	TSCA listed
PackingGroup	III
HS Code	29309090
Storage Class	10 - Combustible liquids
Hazard Classifications	Aquatic Chronic 2

MSDS

Provider	Language
SigmaAldrich	English
ALFA	English

Usage And Synthesis

Introduction

3-Mercaptopropyltriethoxysilane is a bifunctional organosilane possessing a reactive organic mercapto and a hydrolyzable inorganic methoxysilyl group. 3-Mercaptopropyltriethoxysilane is a clear, colorless to light yellow liquid with a slightly mercaptan odor. It is soluble in alcohols, ketones and aliphatic or aromatic hydrocarbons.

Applications:

3-Mercaptopropyltriethoxysilane 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.
Used to improve properties of mineral filled elastomer, including modulus, tensile and tear strength, heat buildup, abrasion resistance, resilience, compression set and cure time.
Used as a pretreatment on minerals or added at the time of compounding.
Used to improve low-rolling resistance in silica-reinforced tire tread compounds.

Chemical Properties

Clear to straw liquid with unpleasant odor of sulfide.

Uses

It can improve the properties of the mineral-filled elastomer, including modulus, tensile and tear strength, heat buildup, abrasion resistance, resilience. It can be used as a pretreatment on minerals or added at the time of compounding. Mineral-reinforced rubbers such as shoe soles, rollers, wheels, white sidewalls, wire and cable insulation are the common case (3-Mercaptopropyl)triethoxysilane, could be used in. It also finds it uses as an intermediate, in polymer and tire manufacture, and as a laboratory reagent.

Flammability and Explosibility

Not classified

Preparation Products And Raw materials