3-Aminopropyltrimethoxysilane

Packing:50kg,200kg,250kg drum

Specification:  CAS NO.:13822-56-5

What is the chemical of 3-Aminopropyltrimethoxysilane ?

Appearance: Colorless to pale yellow transparent oily liquid ;

Assay：99%min  by GC ;

IR Identity: conform to standard ;

HNMR：conform to standard ;

carbon spectrum: conform to standard ;

Water by K. F.:0.5% max or as per the customer’s request ;

Loss on drying:0.5% max. or as per the customer’s request ;

boiling point: 194 ° C (atmospheric pressure);

Used mainly in

•As silane coupling agent: used to couple organic macromolecules and inorganic fillers, enhance adhesion, and improve mechanical, electrical, water resistance, aging resistance and other properties of materials.

Resin modified additives: used in resin systems such as phenolic, epoxy, polyurethane, acrylic, silicone, etc., to enhance adhesion, corrosion resistance, weather resistance, and boiling resistance.

Composite material reinforcement: widely used in fields such as glass fiber, mineral wool, resin sand casting, etc., to improve the strength, moisture resistance, and compression resilience of molding sand.

Coatings and adhesives: used as base coat liquids or additives to improve adhesion to substrates such as glass, aluminum, and iron, and enhance pigment dispersion.

Enzyme fixatives: used in the field of biocatalysis to immobilize enzymes.

•Synthesis of amino silicone oil: used to prepare amino silicone oil and its lotion.

Synthesis lines:

the typical synthesis method of 3-aminopropyltrimethoxysilane is as follows:

1. Raw materials: gamma chloropropyltrimethoxysilane (or gamma chloropropyltriethoxysilane) and excess ammonia water (or amines such as ethylenediamine).

2. Reaction type: Nucleophilic substitution reaction (SN ₂).

3. Reaction conditions:

Solvent: methanol, ethanol or water alcohol mixed solvent;

Temperature: from room temperature to reflux;

Time: several hours to tens of hours;

Excess ammonia is used to suppress by-products such as disubstitutions or trisubstituteions.

4. Reaction equation (taking gamma chloropropyltrimethoxysilane as an example):\ ceCl(CH2)3Si(OCH3)3+2NH3−>H2N(CH2)3Si(OCH3)3+NH4Cl\ceCl(CH2)3Si(OCH3)3+2NH3−>H2N(CH2)3Si(OCH3)3+NH4Cl

5. Post treatment: Distillation is used to remove solvents and unreacted substances, and the product is purified by vacuum distillation.