Dynasylan® MTES

Dynasylan® MTES, an alkyltrialkoxysilane is an important component in sol­gel systems. Dynasylan® MTES is a colorless, low­viscosity liquid. Use requires acid­ or alkali­catalysed hydrolysis. Dynasylan® MTES is regarded as trifunctional since all three alkoxy groups are able to participate in this reaction. Additionally Dynasylan® MTES contains a methyl group that adds organic character to the products. Hydrolysis leads to silanol groups which, in a subsequent condensation reaction, form very stable siloxane bonds (­Si­O­Si­). Condensation occurs parallel to hydrolysis once a certain amount of silanol groups have been formed. The absolute and relative rates of hydrolysis and condensation depends on a number of factors. The most important factors include pH, concentration, solvent, temperature and the catalyst.

Principal: Evonik Corporation Silanes

Functions: Surface Modifier

Features: Low Viscosity, Mar Resistance, UV Resistance

View All Documents

Enhanced TDS

Identification & Functionality

CASE Ingredients Functions
Function
Surface Modifier
Product Code
MITM04173
Technologies
Product Families

Features & Benefits

Applications & Uses

Markets
Applications
Application Information
  • In some sol­gel applications Dynasylan® MTES is partially hydrolyzed to form a preproduct that can be further crosslinked using temperature. This prehydrolysis is often done in conjunction with other organofunctional silanes, silicic acid esters (e.g. Dynasylan® A) or even a aqueous silica sol. This preproduct can be further modified by addition of organic resins or inorganic nanoparticles such as AEROSIL®.
  • It is also possible to construct an inorganic/organic network by adding silanes containing organofunctional groups (e.g. aminopropyl groups) and organic resins and polymerizing using standard organic methods. This principle makes it possible to obtain mar resistant coatings having a higher UV­stability than traditional organic coatings. This can also lead to more flame resistant materials than using traditional resins.

Properties

Physical Form
Product Reactivity
  • Dynasylan® MTES reacts slower with water than Dynasylan® MTMS
  • For rapid hydrolyzation a hydrolysis catalyst (mineral acids or ammonia, or even acetic acid and amines) or a cosolvent such as ethanol can be added.

Regulatory & Compliance

Packaging & Availability

Packaging Type
Product Packaging

Dynasylan® MTES are available in 25 kg, 180 kg and 900 kg drums/ containers.

Storage & Handling

Storage Conditions

Dynasylan® MTES must be stored with exclusion of moisture.

Other

Autoignition Temperature (SDS)
220.0 °C
Boiling Point (SDS)
142.0 °C
Color (SDS)
Colorless
Density
0.89 g/cm³
Density (SDS)
0.89 g/cm³
Explosive Nature (SDS)
Non explosive
Flash Point
30.0 °C
Flash Point (SDS)
30.0 °C
IMO/IMDG EmS Fire
F-E
IMO/IMDG EmS Spill
S-D
IMO/IMDG Proper Shipping Name
Flammable liquid, N.O.S. (triethoxy(methyl)silane)
IMO/IMDG UN Number
UN 1993
Initial Boiling Point
142.0 °C
Item Number
Melting Point (SDS)
max. -40.0 °C
Odor (SDS)
Faint
Other Hazards
None known
Partition coefficient n-octanol/water (SDS)
-2.4
Principal
Shelf Life
12.0 mo
Solubility In Water (SDS)
2900.0 mg/L
USA/DOT Proper Shipping Name
Flammable liquid, N.O.S. (triethoxy(methyl)silane)
USA/DOT UN Number
UN 1993
Vapor Pressure (SDS)
100.0 Pa
Viscosity
0.6 mPa.s
Viscosity (SDS)
0.6 mPa.s
Shelf Life & Stability
ValueUnitsTest Method / Conditions
Shelf Life12.0 momo
Physical Properties
ValueUnitsTest Method / Conditions
Density0.89 g/cm³g/cm³DIN 51757 At 20°C
Flash Point30.0 °C°CDIN 51755
Initial Boiling Point142.0 °C°CDIN 51751
Viscosity0.6 mPa.smPa.sDIN 53015 At 20°C
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Autoignition Temperature (SDS)220.0 °C°CDIN 51794
Boiling Point (SDS)142.0 °C°CDIN 51751 at 1013 hPa
Density (SDS)0.89 g/cm³g/cm³DIN 51757 at 20°C
Flash Point (SDS)30.0 °C°CDIN EN ISO 13736
Melting Point (SDS)max. -40.0 °C°C
Partition coefficient n-octanol/water (SDS)-2.4-Quantitative Structure-Activity Relationship (QSAR) log Pow, Octanol Water
Solubility In Water (SDS)2900.0 mg/Lmg/LQuantitative Structure-Activity Relationship (QSAR) at 20°C, not miscible
Vapor Pressure (SDS)100.0 PaPaAt 25°C
Viscosity (SDS)0.6 mPa.smPa.sDIN 53015 at 20°C