Crosslinking agent for sealant silane Vinyltriacetoxysilane CAS:4130-08-9
Abstract
SCA-V71A Vinyltriacetoxysilane CAS:4130-08-9 is a clear to yellowish liquid with acrid odor of acetic acid (vinegar).
Identification
Name
Vinyltriacetoxysilane
Synonyms TRIACETOXYVINYLSILANE
Molecular Formula C8H12O6Si
Molecular Weight 232.26
CAS Registry Number 14130-08-9
EINECS 223-943-1
Properties
| Index |
Value |
| Molecular Weight |
232.26 |
| Appearance |
clear to yellowish transparent liquid |
| Purity |
≥90.0% |
| Density at 25ºC |
1.167g/ml |
| Boiling point at 10mmHg |
175ºC |
| Refractive index (25ºC) |
1.4220 |
| Flash Point, ºC |
76ºC |
. |
Application
Vinyltriacetoxysilane is transported from the production site as the parent silane to formulators. Generally,Vinyltriacetoxysilane is used as a cross-linker at 3% to 5%.
As Vinyltriacetoxysilane is compounded into a consumer or industrial sealant or adhesive, it reacts with the silicone. After curing the parent silane becomes cross-linked into the silicone rubber matrix and no longer exists, this greatly reduces the potential for consumer or worker exposure.
Vinyltriacetoxysilane is often the main crosslinker of choice for silicone sealants and can be used by itself or in combination with other acetoxysilane to provide the sealant with targeted properties (such as desired cure rate, adhesion, etc).
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