Abstract
N-Propyltrimethoxysilane (CAS No. 1067-25-0), silane coupling agent SCA-K03M, is a monomeric alkylalkoxysilane that, when exposed to moisture, is reactive with the minerals. The monomer can penetrate deeply into a substrate, and then react to form a protective surface surrounding each microscopic particle. This protective surface is extremely durable and leads to significant improvements in weather resistance. The silane is easy to dissolve in organic solvents to form clear, colorless, stable solutions.

Identification
Name n-Propyltrimethoxysilane
Synonyms Trimethoxypropylsilane
Molecular Formula C6H16O3Si
Molecular Weight 164.28
CAS Registry Number 1067-25-0
EINECS 213-926-7

Equivalents
 Z-6264/Z-6265
KBM-3033
 PTMO
P0810

Properties
Density 0.938
Boiling point 137 C degree
Refractive index 1.391
Flash point 35 C degree
Water solubility REACTS

Application
N-Propyltrimethoxysilane (CAS No. 1067-25-0), silane coupling agent SCA-K03M, is an important additive for many applications. Examples are:
1. High-Performance Penetrating Sealers: Premium-grade penetrating sealers are easily formulated by blending 10 to 40 percent SCA-K03M in alcohols or organic solvents.
2. Sol-Gel system: N-Propyltrimethoxysilane is an important component in Sol-Gel system.
3. Filler Dispersion: SCA-K03M can be used as a surface modifier to generate hydrophobicity (e. G. Mineral fillers or inorganic pigments). The medium-chain alkyl functionality in unique compound properties when KH-331 treated minerals or pigments are incorporated into polymers e. G. PP, PE. Loading levels of 0.5 to 1.5 wt% SCA-K03M based on the weight of minerals or pigments are typically recommended.