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Silanes & Organosilanes Available — Bulk Only

3-Glycidoxypropylmethyldiethoxysilane (GPDMS)

GPDMS
CAS 2897-60-1 · Formula C11H24O4Si · MW 248.39 g/mol

A glycidoxy-functional silane carrying one non-hydrolyzable methyl group, tuning network density in epoxy adhesion systems. It is used as a surface modifier and adhesion promoter, coupling inorganic substrates to epoxy and other organic resin systems; its difunctional (two-ethoxy, one-methyl) structure limits crosslink density relative to trialkoxy silanes.

Part of Epoxy Silane Coupling Agents · Silane Coupling Agents · Agricultural Silanes & Coupling Agents
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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
Coupling / Adhesion Promotion Crosslinking / Curing
Industries Served
Agriculture Coatings & Construction Industrial Manufacturing Plastics & Polymers
Applications & Use Cases
  • ▸ Adhesion promoter: Couples inorganic substrates to epoxy resins.
  • ▸ Surface modifier: Functionalizes mineral and glass surfaces.
  • ▸ Adhesive manufacturing: Coupling additive in adhesive 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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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
2897-60-1
Molecular Formula
C11H24O4Si
Molecular Weight
248.39 g/mol
IUPAC Name
diethoxy-methyl-[3-(oxiran-2-ylmethoxy)propyl]silane
PubChem CID
62467
InChI Key
OTARVPUIYXHRRB-UHFFFAOYSA-N
Synonyms & Trade Names
Diethoxy(methyl)(3-(oxiran-2-ylmethoxy)propyl)silane 3-(Methyldiethoxysilyl)propyl glycidyl ether gamma-glycidoxypropylmethyldiethoxysilane (gamma-Glycidoxypropyl)methyldiethoxysilane Diethoxy(3-(glycidyloxy)propyl)methyl silane 3-GPMDES Silane, diethoxymethyl(3-(oxiranylmethoxy)propyl)- Silane, (3-(2,3-epoxypropoxy)propyl)diethoxymethyl- Oxirane, 2-((3-(diethoxymethylsilyl)propoxy)methyl)- [3-(2,3-epoxypropoxy)propyl]diethoxymethylsilane diethoxy-3-glycidoxypropylmethylsilane diethoxy(3-(glycidyloxy)propyl)methylsilane 3-(GLYCIDOXY)PROPYLDIETHOXYMETHYLSILANE
Full Description

3-Glycidoxypropylmethyldiethoxysilane (CAS 2897-60-1), or GPDMS, is an epoxy- (glycidoxy-) functional organosilane. It is used as a surface modifier and adhesion promoter, coupling inorganic substrates to epoxy and other organic resin systems; its difunctional (two-ethoxy, one-methyl) structure limits crosslink density relative to trialkoxy silanes.

Frequently Asked Questions

What is 3-glycidoxypropylmethyldiethoxysilane (GPDMS) used for?

GPDMS is an epoxy- (glycidoxy-) functional organosilane used as a surface modifier and adhesion promoter, coupling inorganic substrates to epoxy and other organic resin systems. It is used as a coupling additive in adhesive manufacturing and to functionalize mineral and glass surfaces.

How does GPDMS differ from a trialkoxy glycidoxy silane like GPTMS?

GPDMS is difunctional, carrying two ethoxy groups and one methyl substituent rather than three alkoxy groups. That structure limits crosslink density relative to trialkoxy silanes such as GPTMS, which can be desirable where a less densely crosslinked, more flexible interface is wanted.

What is the CAS number and formula of GPDMS?

3-Glycidoxypropylmethyldiethoxysilane has CAS number 2897-60-1 and molecular formula C11H24O4Si. It belongs to the Silanes & Organosilanes family.

What is the cost of bulk GPDMS?

Pricing depends on volume, packaging, and current raw-material markets, so RawSource quotes per order rather than listing a fixed price. Submit a bulk RFQ with your target quantity (drums, totes, or IBCs) for a current quote and lead time.

What is the HS code for GPDMS?

GPDMS classifies under HS 2931.90 — organo-inorganic compounds, other. Verify the country-specific tariff suffix with your broker; RawSource supplies commercial and customs documentation on bulk shipments.

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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.
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