Vinyltrimethoxysilane Property

Melting point:

<-70°C

Boiling point:

123 °C (lit.)

Density 

0.968 g/mL at 25 °C (lit.)

vapor pressure 

88 hPa (55 °C)

refractive index 

n20/D 1.392(lit.)

Flash point:

73 °F

storage temp. 

Store below +30°C.

form 

liquid

color 

Colorless to Almost colorless

Specific Gravity

0.970

explosive limit

1.1%(V)

Water Solubility 

slightly soluble

Hydrolytic Sensitivity

7: reacts slowly with moisture/water

Sensitive 

Moisture Sensitive

BRN 

1099136

InChIKey

NKSJNEHGWDZZQF-UHFFFAOYSA-N

LogP

-2--0.82 at 20℃

CAS DataBase Reference

2768-02-7(CAS DataBase Reference)

NIST Chemistry Reference

Vinyltrimethoxysilane(2768-02-7)

EPA Substance Registry System

Vinyltrimethoxysilane (2768-02-7)

Safety

Hazard Codes 

Xi

Risk Statements 

10-36/37/38-20

Safety Statements 

26-36/37/39-37/39-16

RIDADR 

UN 1993 3/PG 2

WGK Germany 

1

RTECS 

VV6770000

F 

10-21

Autoignition Temperature

235 °C

TSCA 

Yes

HazardClass 

3

PackingGroup 

III

HS Code 

29310095

Toxicity

LD50 orally in Rabbit: 7120 mg/kg LD50 dermal Rabbit 3259 mg/kg

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H225Highly Flammable liquid and vapour

H317May cause an allergic skin reaction

H332Harmful if inhaled

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P233Keep container tightly closed.

P240Ground/bond container and receiving equipment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

Vinyltrimethoxysilane Chemical Properties,Usage,Production

Description

Vinyltrimethoxysilane, is used as a polymer modifier via grafting reactions. The resulting pendant trimethoxysilyl groups can function as moisture-activated crosslinking sites. The Silane grafted polymer is processed as a thermoplastic and crosslinking occurs after fabrication of the finished article upon exposure to moisture.

Vinyltrimethoxysilane is mainly applied in these aspects:

1. In the preparation of moisture-curing polymers, e.g. polyethylene. Silane crosslinked polyethylene is widely used as cable isolation, and sheathing mainly in low voltage applications as well as for hot water/sanitary pipes and underfloor heating.
2. As a co-monomer for the preparation of different polymers such as polyethylene or acrylics. Those polymers show an improved adhesion to inorganic surfaces and they can also be crosslinked with moisture.
3. As an efficient adhesion promoter for various mineral-filled polymers, improving mechanical and electrical properties especially after exposure to moisture.
4. Improving the compatibility of fillers with polymers, leading to a better dispersibility, reduced melt viscosity and easier processing of filled plastics.
5. Pre-treating of glass, metals, or ceramic surfaces, improve the adhesion of coatings on these surfaces and corrosion resistance.
6. As moisture scavenger, it reacts rapidly with water. This effect is used widely in sealants.

Chemical Properties

Colorless transparent liquid

Uses

VTMS may be used to provide superhydrophobicity to different materials like TiO₂, talc, kaolin, magnesium oxide nanoparticles, ammonium phosphate and PEDOT. It modifies the surface by capping the material and creates a protective layer that is water resistant and can be used in major coating industries.

General Description

Vinyltrimethoxysilane (VTMS) is a silane coupling agent with silicon and hydroxyl groups that can be used to enhance the wettability and improve the superhydrophobic characteristics of different composites.

Flammability and Explosibility

Flammable