KBM-903
Shin-Etsu Chemical Co., Ltd. · KBM
KBM-903 is a versatile aminosilane coupling agent, specifically 3-Aminopropyltrimethoxysilane, used in composites, coatings, adhesives, sealants, and elastomers. It enhances the interaction between organic and inorganic materials, improving adhesion, mechanical strength, and hydrolytic stability. KBM-903 can improve many properties such as adhesion to a wide variety of substrates such as glass, ceramics, and metals and is widely applicable across a variety of thermosets, thermoplastics, and elastomers.
- Good weathering properties
- Suitable for various substrates
- High performance
- High hydrolytic resistance
- Good adhesion
- Good mechanical properties
- Improved water resistance
Specifications
Identifiers
- Chemical name
- 3-Aminopropyltrimethoxysilane
- CAS number(s)
- 13822-56-5
- EC number
- 237-511-5
- Molecular formula
- C6H17NO3Si
- InChI key
- SJECZPVISLOESU-UHFFFAOYSA-N
- Synonyms
- Aminosilane Coupling Agent, 3-(Trimethoxysilyl)propan-1-amine, 3-(Trimethoxysilyl)-1-propanamine
Technical specifications
Properties
| Property | Value | Unit |
|---|---|---|
| Physical State | Liquid | - |
| Color | Colorless, transparent | - |
| Odor | Amine odor | - |
| Boiling Point | 215 | °C |
| Vapor Pressure | < 5 (at 25 °C) | mmHg |
| Vapor Density | 6.2 (Air = 1) | - |
| Specific Gravity | 1.01 (at 25 °C) | - |
| Evaporation Rate | < 1 (Butyl acetate = 1) | - |
| Solubility in Water | Soluble | - |
| Flash Point | 88 (Open cup), > 61 (Closed cup) | °C |
Specifications
| Test Condition | Specification | Value | Unit | Test Method |
|---|---|---|---|---|
| - | Appearance | Clear to light straw | - | - |
| - | Purity by GC | > 99 | % | - |
| at 25 °C | Specific Gravity | 0.951 | - | - |
| at 25 °C | Refractive Index | 1.4225 | - | - |
| at 760 mmHg | Boiling Point | 215 | °C | - |
| at 30 mmHg, low pressure | Boiling Point | 122 | °C | - |
- Industries
- Adhesives & SealantsCASECareCeramics & glassChemical ManufacturingElectronics & ElectricalPaints & Coatings
- Applications
- Adhesives & sealants formulationsOptical fibersGlass-reinforced compositesPaints & coatings formulationsFiller surface treatmentPolymers
- Functions
- DispersantWetting AgentAdhesion promoterCoupling agent
- Market segments
- AdhesivesGlass & opticsSpecialty chemicalsPaints & coatings additivesElectronic components
Documents
- Request a copy
Technical Data Sheet (TDS)
Specifications & performance data
- Request a copy
Safety Data Sheet (SDS)
Safety information & handling