Silane Coupling Agents | Adhesion Promoters | Amino Silanes | Surface Modifiers

SiSiB® PC1118

Synonym: 3-(Trimethoxysilyl)-N-(3-(trimethoxysilyl)propyl)-1-propanamine

Countertype of Dynasylan 1124, Silquest A-1170

Chemical Structure


SiSiB® PC1118 is a secondary aminofunctional silane possessing two symmetric silicon atoms. SiSiB® PC1118 may act as an adhesion promoter between inorganic materials (for example glass, metals and fillers) and organic polymers (thermosets, thermoplastics and elastomers) or as a surface modifier.

SiSiB® PC1118 is a slightly yellowish liquid with an amine-like odor. It is soluble in alcohols, aliphatic or aromatic hydrocarbons.

Typical Physical Properties

Chemical Name: Bis[(3-trimethoxysilyl)propyl]amine
CAS No.: 82985-35-1
EINECS No.: 240-084-5
Empirical Formula: C12H31NO6Si2
Molecular Weight: 341.55
Boiling Point: 285°C [760mmHg]
Flash Point 140°C
Color and Appearance: Yellowish clear liquid
Density [25°C]: 1.04
Refractive Index [25°C]: 1.432
Purity: Min. 96.0% by GC


SiSiB® PC1118 can be used in many applications, like:

- Foundry resins: as additive to phenolic,furan and melamine resins;
- Mineral-filled composites: for pre-treatment of fillers and pigments;
- Metal primers;
- Mineral fiber insulating materials, abrasives: as additive to phenolic resin binders;
- Sealants and adhesives: as primer or additive;
- Paints and coatings: as additive and primer for improving adhesion to the substrate.

SiSiB® PC1118 can be used to improve:

Product properties, such as
- Durability at high temperature and humidity;
- Flexural strength, tensile strength, impact strength and modulus of elasticity;
- Moisture and corrosion resistance ;
Processing properties, such as
- Excellent primerless adhesion;
- Higher filler loading;
- Homogeneous distribution of inorganic fillers in polymer matrices;
- Rheological behaviour: reduction in viscosity, newtonian behavior;
- Wet-out.


Net weight 200Kg steel drum or 1000Kg IBC container, for more details, please visit Packing Centre.

Technical Library

Download Technical Data Sheet Safety Data Sheet


Download 2010 SiSiB® SILANE Catalogue