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Adhesives Ingredients
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Adhesives Ingredients
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Dynasylan® A

Technical Datasheet | Supplied by Evonik
Dynasylan® A by Evonik is a tetraethyl orthosilicate. Used as a crosslinker in silicone rubber systems and as drying agent in sealing compositions. Provides improved chemical and thermal stability. Is a ready source of silicic acid for many applications. Silicic acid in usually obtained by hydrolysis, or thermally by condensation at elevated temperature. The resulting silicic acid bonds well to many inorganic substrates and can be deposited in situ in a controlled manner. The surfaces of glass, metals, pigments, fillers and synthetic fibres can be coated with a very thin SiO2 layer in order to improve chemical and thermal stability and mechanical properties.
Product Type
Crosslinking / Curing / Vulcanizing Agents > Silanes
Chemical Composition
Tetraethylorthosilicate
CAS Number
78-10-4
Physical Form
Liquid
Appearance
colorless
Product Status
COMMERCIAL
Applications/ Recommended for
  • Sealants
  • Polymers > Silicones (Si)
  • Polymers > Synthetic Rubbers
Bio Based
No

Dynasylan® A Properties

Property

Value & Unit
Test Condition
Test Method
Density @ 20°C
0.93 - 0.94 g/cm3
Viscosity @ 20°C
0.75 mPas
Flash point
45 °C

SpecialChem additionnal informations based on CAS Number : 78-10-4

Hansen Solubility Parameters

[13.6, 3.4, 3]
?
[δD - Dispersion force interactions, δP - Polar force interactions, δH - Hydrogen bond force interactions]

Please note, these HSP values are estimations. It is based upon the “like seeks like” principle. It splits an ingredients interactions into three parameters; δD (Dispersion force interactions), δP (Polar forces interactions) and δH (Hydrogen bond force interactions). Hansen Solubility Parameters can help you find a wide range of products that are predicted to be compatible with Dynasylan® A. A practical determination of these HSP values would provide higher certainty. Learn More.

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