3-Isocyanatopropyltriethoxysilane Chemical Properties

Melting point:

<0°C

Boiling point:

283 °C(lit.)

Density 

0.999 g/mL at 25 °C(lit.)

vapor pressure 

0-7910Pa at 20-25℃

refractive index 

n20/D 1.42(lit.)

Flash point:

171 °F

storage temp. 

2-8°C

form 

Liquid

Specific Gravity

0.999

color 

Clear colorless to yellow

Water Solubility 

Hydrolyzes in water.

Hydrolytic Sensitivity

7: reacts slowly with moisture/water

Sensitive 

Moisture Sensitive

BRN 

4404652

LogP

-4--0.3 at 20℃

CAS DataBase Reference

24801-88-5(CAS DataBase Reference)

EPA Substance Registry System

Silane, triethoxy(3-isocyanatopropyl)- (24801-88-5)

Safety Information

Hazard Codes 

T+

Risk Statements 

21/22-26-34-42

Safety Statements 

23-26-28-36/37/39-45

RIDADR 

UN 3390 6.1/PG 1

WGK Germany 

3

RTECS 

VV6691000

F 

10-19-21

TSCA 

Yes

HazardClass 

6.1

PackingGroup 

III

HS Code 

29319090

Toxicity

LD50 oral in rat: 707uL/kg

MSDS

• Language:English Provider:Triethoxy(3-isocyanatopropyl)silane
• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

3-Isocyanatopropyltriethoxysilane Usage And Synthesis

Description

3-isocyanatepropyltriethoxysilane is an isocyanate functional silane. It is used for the functionalization of numerous compounds with active hydrogen atoms. It hydrolyzes in the presence of moisture to form silanols, which can react with themselves to produce siloxanes.

3-isocyanatepropyltriethoxysilane is mainly applied in these aspects:

1. As crosslinkers for one part moisture curable urethane adhesives, sealants and coatings.
2. As adhesion promoters for one part moisture curable and two part reactive urethane systems.
3. As adhesion promoters for silicone sealants or coatings, to enhance adhesion to organic substrates with active hydrogen atoms.
4. It can provide good wet adhesion to glass, metal and other inorganic substrates, and can provide good thermal, chemical and UV stable performance.
5. It hydrolyzes slower than SiSiB® PC2710, SiSiB® PC2720 is better for applications requring greater open time or enhanced shelf stability.

Chemical Properties

Colorless clear liquid

Uses

3-Isocyanatopropyltriethoxysilane is used in preparation of antistatic adhesive and liquid crystal display device.

Hazard

A poison by skin contact. Moderately toxic by inhalation. A mild skin and severe eye irritant.

Flammability and Explosibility

Not classified

Toxics Screening Level

The initial threshold screening level (ITSL) for triethoxy(3-isocyanatopropyl)silane (synonym 3-Isocyanatopropyltriethoxysilane) is 0.08 μg/m3 with annual averaging time.

3-Isocyanatopropyltriethoxysilane(24801-88-5)Related Product Information

• ALLYLTRIETHOXYSILANE
• Silicon tetrahydride
• Triethoxysilane
• 3-Aminopropyltrimethoxysilane
• 3-Mercaptopropyltriethoxysilane
• Triethoxyvinylsilane
• Trimethoxypropylsilane
• Propyl butyrate
• Propyl gallate
• 3-Aminopropyltriethoxysilane
• 3-Chloropropyltrimethoxysilane
• Triethoxypropylsilane
• Trimethylsilyl cyanide
• Methyltriethoxysilane
• 3-Chloropropyltriethoxysilane
• Tetraethyl orthosilicate
• Trimethoxysilylpropanethiol
• Tetramethyl orthosilicate