Methyltriacetoxysilane

Physical and Chemical Properties

Molecular Formula: C7H12O6Si
Molecular Weight: 220.25
CAS No.: 4253-34-3
Density at 25¡æ : 1.16-1.17g/ml
Boiling point at 760mmHg : 220¡æ
Flash Point : 84¡æ
Refractive index (25¡æ): 1.4050
Reactivity: Readily hydrolyzes upon contact with moisture

Technological Index

Application and Usage

It is a clear to yellowish liquid with acrid odor of acetic acid (vinegar). It is transported from the production site as the parent silane to formulators. It is used as a cross-linker at 3% to 5%. Since it 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. It 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).

Package, Storage and Handling

N.W 25KG/Plastic drum, or 230KG/Drum.
Storage at ventilate and dry place and prevention from water, heat and sunshine. Be careful when loading and unloading to avoid damages of the package. Customers considering the use of this product should review the latest Material Safety Data Sheet and label for product safety information, handling instructions, personal protective equipment if necessary, and any special storage condition required.