Name: Evonik Dynasylan BDAC Di-tert-butoxydiacetoxysilane
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Evonik Dynasylan BDAC Di-tert-butoxydiacetoxysilane

Highly reactive dual-function silane with both alkoxy and acyloxy hydrolysable groups.
Low volatility and reduced odor compared to conventional acetoxysilanes, enhancing workplace safety.
Excellent shelf stability under dry, cool storage conditions due to steric hindrance from tert-butoxy groups.
Enables rapid crosslinking in moisture-curing systems without requiring strong acid catalysts.
Improves adhesion between organic polymers and inorganic substrates such as glass, metals, and fillers.

Typical Applications Of Evonik Dynasylan BDAC Di-tert-butoxydiacetoxysilane

Acetoxy-based one-component (1K) silicone sealants and adhesives.
Moisture-curing polyurethane and polysulfide caulks for construction and automotive assembly.
Surface treatment of silica, calcium carbonate, and other mineral fillers in elastomers and thermoplastics.
Hybrid polymer formulations (e.g., silane-terminated polyethers – MS Polymers).

Chemical Type	Di-tert-butoxydiacetoxysilane
Product Form	Liquid
Appearance	Colorless to pale yellow clear liquid
Density (20 °C)	Approx. 1.03–1.06 g/cm³
Refractive Index (20 °C)	Approx. 1.420–1.435
Flash Point (PMCC)	Approx. 95–105 °C
Solubility	Miscible with common organic solvents (e.g., alcohols, esters, hydrocarbons); hydrolyzes in water
Storage Conditions	Store in tightly closed containers under dry, inert atmosphere at 5–25 °C

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