FAQs
What is APTES used for?
3-Aminopropyltriethoxysilane is an aminosilane coupling agent used to functionalize glass, silica, and metal-oxide surfaces with amine groups. It is common in surface chemistry, adhesion promotion, and bio-conjugation, where the reactive silane end bonds to the surface and the amine end provides a site for further chemistry.
What are the purity and identity of this product?
This TCI product (A0439) is a minimum 98.0% (GC) grade with molecular formula C9H23NO3Si, molecular weight 221.37, and CAS number 919-30-2. It is a colorless liquid with a refractive index of about 1.42. Confirming these identifiers helps ensure you receive the correct reagent for your work.
Why is APTES moisture sensitive?
Alkoxysilanes such as APTES react with water, so exposure to moisture can cause premature hydrolysis and reduce performance. Keep containers tightly closed and protected from moisture during storage. Following the manufacturer's storage guidance helps preserve the reagent's reactivity for surface-modification and coupling applications.
How should APTES be handled and shipped?
APTES ships as a corrosive amine liquid under DOT guidance, so it should be handled with appropriate personal protective equipment and kept away from incompatible materials. Always review the Safety Data Sheet before use. The product also carries a California Prop 65 warning that should be noted during handling.
What sizes are available?
The reagent is offered in 25 g, 100 g, and 500 g pack sizes. Choosing a size close to your expected usage helps manage a moisture-sensitive material, since smaller quantities limit how long an opened container is exposed to repeated handling and potential moisture uptake over time.
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