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Adhesives Ingredients
The material selection platform
Adhesives Ingredients
by SpecialChem
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Dynasylan® MTMO

Technical Datasheet | Supplied by Evonik
Dynasylan® MTMO by Evonik is a 3-mercaptopropyltrimethoxysilane compound. Acts as an adhesion promoter, crosslinking agent, surface modifier or reactive reagent. Provides improved mechanical properties like flexural strength, tensile strength, impact strength and modulus of elasticity, tear strength. Exhibits improved moisture and corrosion resistance as well as improved electrical properties like dielectric constant, volume resistivity. Can also improve processing properties such as cure time, adhesion, filler dispersion, rheological behavior like viscosity reduction and higher filler loading. Dynasylan® MTMO is listed on DSL/NDSL, PICCS, TSCA, IECS, ENCS, ECL, EINECS/ELINCS, AICS and REACH. Minimum shelf life of this product is 12 months.
Product Type
  • Adhesion Promoters > Organofunctional Silanes
  • Crosslinking / Curing / Vulcanizing Agents > Silanes
Chemical Composition
CAS Number
Physical Form
Liquid, Colorless to light yellow
Clear, Colorless to light yellow
Product Status
Applications/ Recommended for
  • Adhesives
  • Sealants
  • Polymers > Polyurethanes > PU-Prepolymers
  • Polymers > Polysulfides
  • Polymers > Polychlorovinyls (PVC, PVDC) > Polyvinyl Chlorides (PVC)
Bio Based
Labels/Agency Rating

Dynasylan® MTMO Properties


Value & Unit
Test Condition
Test Method
Density @ 20°C, DIN 51757
1.06 g/cm3
Viscosity @ 20°C, DIN 53015
2.0 mPa.s
Flash Point, DIN 51758
96 °C

SpecialChem additionnal informations based on CAS Number : 4420-74-0

Hansen Solubility Parameters

[14.6, 5.2, 4.8]
[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® MTMO. A practical determination of these HSP values would provide higher certainty. Learn More.

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