3-Mercaptopropyltriethoxysilane 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

pka

10.39±0.10(Predicted)

form 

clear liquid

color 

Colorless to Almost colorless

Specific Gravity

0.932

Water Solubility 

Hydrolyzes slowly in water.

Hydrolytic Sensitivity

7: reacts slowly with moisture/water

Sensitive 

Moisture Sensitive

BRN 

2039575

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 

Yes

PackingGroup 

III

HS Code 

29309090

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

3-Mercaptopropyltriethoxysilane 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

3-Mercaptopropyltriethoxysilane(14814-09-6)Related Product Information

• Phenyltriethoxysilane
• Triethoxyisobutylsilane
• Silicon tetrahydride
• 3-Chloropropyltriethoxysilane
• Trimethoxysilylpropanethiol
• Trimethoxysilane
• Triethoxysilane
• 3-Chloropropyltrimethoxysilane
• 3-Aminopropyltriethoxysilane
• Triethoxyvinylsilane
• Triethoxypropylsilane
• Methyltriethoxysilane
• Chlorotriethylsilane
• N-(3-Triethoxysilylpropyl)ethylenediamine
• Silane coupler KH-602
• N-[3-(Trimethoxysilyl)propyl]ethylenediamine
• Vinyl tris(2-methoxyethoxy) silane
• 3-Methacryloxypropyltrimethoxysilane