3-Chloropropyltrimethoxysilane

3-Chloropropyltrimethoxysilane (CAS 2530-87-2) is an organosilane coupling agent commercially available under trade names including Silquest A-143, Z-6076, and abbreviated as CPTMO or CPS-M. It carries no assigned E-code and is classified under HS code 29310095 within the silicones and silicates category.

In adhesive and sealant formulations, it bonds inorganic substrates such as glass or mineral fillers to organic polymer matrices by reacting through its methoxy groups with surface hydroxyl groups while the chloropropyl end engages the polymer network. In textile and fiber treatments, it improves fiber-matrix adhesion in reinforced composites and contributes to flame-retardant finishes through reactive incorporation into the substrate.

Supplied as a liquid under REACH registration, it is handled in compliance with EU chemical regulations without an assigned E-code, confirming it falls outside food additive classifications. Standard packaging includes drums and IBC containers. Buyers should request a current SDS and confirm grade specification for electronics or personal care end-use requirements.