Silanes & Organosilanes Available — Bulk Only

N-(2-Aminoethyl)-3-aminopropylmethyldimethoxysilane (Diamino-Functional Silane)

CAS 3069-29-2 · Formula C8H22N2O2Si · MW 206.36 g/mol

A diamino-functional silane coupling agent that bridges inorganic fillers and organic polymer matrices. It functions as an adhesion/cohesion promoter, surface modifier, and coupling-agent intermediate, bonding inorganic substrates to organic resins.

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UN Number
UN 3267
Hazard Class
Class 8
HS Code
2931.90
At a Glance
Material Family
Silanes & Organosilanes
Record Type
Pure compound
Primary Role
Coupling / Adhesion Promotion · Crosslinking / Curing
Applications & Use Cases
  • Adhesion promoter: Improves resin adhesion to mineral and metal surfaces.
  • Coupling agent: Couples inorganic fillers/substrates to organic polymers.
  • Surface modifier: Functionalizes fillers, glass, and pigments.
  • Intermediate: Building block for silane-modified systems.
Physical Properties
Physical Description
Liquid
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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DOT / UN Transport Classification
DOT hazard class 8 placard
UN / DOT NumberUN 3267
Hazard Class / DivisionClass 8
Proper Shipping NameCorrosive liquid, basic, organic, n.o.s

Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.

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
3069-29-2
Molecular Formula
C8H22N2O2Si
Molecular Weight
206.36 g/mol
IUPAC Name
N'-[3-[dimethoxy(methyl)silyl]propyl]ethane-1,2-diamine
PubChem CID
InChI Key
MQWFLKHKWJMCEN-UHFFFAOYSA-N
Synonyms & Trade Names
N-(2-Aminoethyl)-3-aminopropylmethyldimethoxysilane n-{3-[dimethoxy(methyl)silyl]propyl}ethane-1,2-diamine 1,2-Ethanediamine, N1-(3-(dimethoxymethylsilyl)propyl)- CA0699 3-(N-(beta-Aminoethyl)amino)propylmethyldimethoxysilane 2-aminoethyl-3-aminopropylmethyldimethoxysilane 3-[N-(.beta.-Aminoethyl)amino]propylmethyldimethoxysilane ETHYLENEDIAMINE, N-(3-(DIMETHOXYMETHYLSILYL)PROPYL)- (2-AMINOETHYL)-.GAMMA.-AMINOPROPYLMETHYLDIMETHOXYSILANE N-(2-AMINOETHYL)-N-(3-(DIMETHOXYMETHYLSILYL)PROPYL)AMINE N-(3-(DIMETHOXY(METHYL)SILYL)PROPYL)ETHANE-1,2-DIAMINE (N-.BETA.-AMINOETHYL-.GAMMA.-AMINOPROPYL)DIMETHOXYMETHYLSILANE METHYLDIMETHOXY(.BETA.-AMINOETHYL-.GAMMA.-AMINOPROPYL)SILANE Dynasylan 1411
Full Description

N-(2-Aminoethyl)-3-aminopropylmethyldimethoxysilane (CAS 3069-29-2, C8H22N2O2Si) is a diamino-functional organosilane. It functions as an adhesion/cohesion promoter, surface modifier, and coupling-agent intermediate, bonding inorganic substrates to organic resins.

Frequently Asked Questions

What is an amino silane?

An amino silane is an organosilane bearing both amine groups and hydrolyzable silicon-alkoxy groups, letting it bridge inorganic and organic surfaces. This material, N-(2-aminoethyl)-3-aminopropylmethyldimethoxysilane (CAS 3069-29-2), is a diamino-functional example used as a coupling and adhesion-promoting agent.

What is aminoethylamino silane used for?

It functions as an adhesion/cohesion promoter, coupling agent, and surface modifier, bonding mineral and metal substrates to organic resins. It is also used to functionalize fillers, glass, and pigments and as an intermediate for silane-modified systems.

What is the formula for this aminoethylamino silane?

The molecular formula is C8H22N2O2Si (CAS 3069-29-2). It is a diamino-functional methyldimethoxysilane, carrying two methoxy hydrolyzable groups and a primary plus secondary amine.

How is aminoethylamino silane different from 3-aminopropyltrimethoxysilane?

3-Aminopropyltrimethoxysilane is a mono-amino, trimethoxy silane, whereas this product is a diamino, methyldimethoxysilane, giving two amine sites and one fewer alkoxy group. The added amine and reduced crosslink density change adhesion and reactivity, so specify which you need.

What packaging and HS code apply to this silane?

It classifies under HS 2931.90 (other organo-inorganic compounds). RawSource supplies it in bulk drums and totes; request a bulk quote with CoA and SDS, noting your volume and destination.

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.