Silanes & Organosilanes Available — Bulk Only

(3-Aminopropyl)silanetriol

CAS 58160-99-9 · Formula C3H11NO3Si · MW 137.21 g/mol

A water-soluble aminosilane triol, the hydrolysis-stable form of an aminopropyl silane coupling agent. Aminofunctional silanes of this class act as coupling agents and adhesion promoters, bonding inorganic substrates such as glass, mineral fillers, and metals to organic resins.

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HS Code
2931.90
At a Glance
Material Family
Silanes & Organosilanes
Record Type
Pure compound
Primary Role
Coupling / Adhesion Promotion · Crosslinking / Curing
Functional Roles
SILANETRIOL
HAIR CONDITIONING
Applications & Use Cases
  • Coupling agent: Bonds inorganic fillers and substrates to organic polymer matrices.
  • Adhesion promoter: Improves resin adhesion to glass, silica, and metal surfaces.
  • Waterborne systems: Pre-hydrolyzed silanetriol for aqueous formulations.
Physical Properties
Physical Description
0.1-5.0% aqueous solution: Colorless odorless liquid; [Dow Chemical MSDS]
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2931 . 90
Chapter 29
Organic chemicals
Heading 29.31
Internationally harmonized (WCO HS)
Subheading 2931.90
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
58160-99-9
Molecular Formula
C3H11NO3Si
Molecular Weight
137.21 g/mol
IUPAC Name
3-trihydroxysilylpropan-1-amine
INCI Name
SILANETRIOL
PubChem CID
InChI Key
JTXUAHIMULPXKY-UHFFFAOYSA-N
Synonyms & Trade Names
AMINOPROPYLSILANETRIOL (3-Aminopropyl)silanetriol 3-AMINOPROPYLSILANETRIOL Silanetriol, (3-aminopropyl)- 3-trihydroxysilylpropan-1-amine 3-aminopropyltrihydroxysilane Aminopropylsilanetriol, 22-25% in water Silanetriol, 1-(3-aminopropyl)- C3H11NO3Si gamma-aminopropylsilanetriol KH-553
Full Description

(3-Aminopropyl)silanetriol (CAS 58160-99-9) is the water-soluble triol form of an aminopropyl-functional silane. Aminofunctional silanes of this class act as coupling agents and adhesion promoters, bonding inorganic substrates such as glass, mineral fillers, and metals to organic resins. Its aqueous solubility suits waterborne formulations where alkoxysilanes would otherwise require pre-hydrolysis.

Frequently Asked Questions

What is (3-aminopropyl)silanetriol used for?

(3-Aminopropyl)silanetriol (CAS 58160-99-9, C3H11NO3Si) is the water-soluble triol form of an aminopropyl-functional silane. It acts as a coupling agent and adhesion promoter, bonding inorganic substrates such as glass, mineral fillers, and metals to organic resins. RawSource supplies it in bulk to waterborne-formulation manufacturers.

Why use the silanetriol instead of an alkoxysilane like APTES?

Because (3-aminopropyl)silanetriol is already in the hydrolyzed, water-soluble triol form, it suits waterborne formulations directly, whereas alkoxysilanes such as APTES or APTMS would otherwise require pre-hydrolysis. This makes it convenient where aqueous compatibility and no alcohol by-product are desired.

Is (3-aminopropyl)silanetriol water soluble?

Yes. Its three silanol (Si-OH) groups make it water-soluble, which is the key distinction from alkoxy aminosilanes. It is typically supplied as an aqueous solution for direct use in waterborne systems.

What CAS number and HS code apply to (3-aminopropyl)silanetriol?

The CAS number is 58160-99-9. It classifies under HS 2931.90 (organo-inorganic compounds, other). It is commonly supplied as an aqueous solution; confirm active content and the destination tariff line when ordering.

How is bulk (3-aminopropyl)silanetriol supplied and quoted?

RawSource supplies it in bulk, typically as an aqueous solution in drums, totes, and IBCs. Pricing depends on volume and active concentration, so request a bulk quote with your target quantity and active-content requirement; CoA and SDS accompany each shipment.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.