KBM-603

Shin-Etsu Chemical Co., Ltd.

Shin-Etsu Chemical Co., Ltd. · KBM

KBM-603 is a diamino-functional silane, specifically N-(2-Aminoethyl)-3-aminopropyltrimethoxysilane. It is widely used in composites, coatings, adhesives, and sealants to improve adhesion, strength, and flexibility. It enhances interaction between organic and inorganic materials, promoting better filler dispersion to materials such as glass, ceramics, and metals and improves chemical and moisture resistance in reinforced systems.

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Specifications

Identifiers

Chemical name
N-(2-Aminoethyl)-3-aminopropyltrimethoxysilane
CAS number(s)
1760-24-3
EC number
217-164-6
Molecular formula
C8H22N2O3Si
InChI key
PHQOGHDTIVQXHL-UHFFFAOYSA-N
Synonyms
Diaminosilane Coupling Agent, N-[3-(Trimethoxysilyl)propyl]-1,2-ethanediamine, N-(2-Aminoethyl)-3-aminopropyl-trimethoxysilane

Technical specifications

Properties

PropertyValueUnit
Physical StateLiquid-
ColorColorless, transparent-
OdorAmine odor-
Boiling Point259°C
Vapor Pressure< 10 (at 25 °C)mmHg
Vapor Density7.7 (Air = 1)-
Specific Gravity1.02 (at 25 °C)-
Evaporation Rate< 1 (Butyl acetate = 1)-
Solubility in WaterSoluble-
Flash Point128 (Open cup), > 94 (Closed cup)°C

Specifications

Test ConditionSpecificationValueUnitTest Method
-AppearanceLight straw--
at 25 °CSpecific Gravity0.975--
at 25 °CRefractive Index1.4447--
-Purity by GC> 98%-
Industries
Adhesives & SealantsCASECareCeramics & glassChemical ManufacturingElectronics & ElectricalPaints & Coatings
Product groups
SiliconesSilane Coupling AgentsSilanes & Siloxanes
Applications
Filler surface treatmentPolymersOptical fibersPaints & coatings formulationsAdhesives & sealants formulationsGlass-reinforced composites
Functions
Chemical resistanceDispersantViscosity controllerFlow modifierCoupling agentAdhesion promoter
Market segments
AdhesivesGlass & opticsSpecialty chemicalsElectronic componentsPaints & coatings additives

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