KBM-803

Shin-Etsu Chemical Co., Ltd.

Shin-Etsu Chemical Co., Ltd. · KBM

KBM-803 is a mercapto-functional silane coupling agent, specifically 3-Mercaptopropyltrimethoxysilane. It is used to improve adhesion between organic and inorganic materials in a variety of applications, including rubbers, adhesives, and coatings. It enhances crosslinking, mechanical properties, and resistance to weathering, making it suitable for use in EPDM, urethane, polyvinyl chloride (PVC), phenolic, epoxy, polyethylene, polypropylene applications.

Request a quoteRequest TDS/SDS

Specifications

Identifiers

Chemical name
3-Mercaptopropyltrimethoxysilane
CAS number(s)
4420-74-0
EC number
224-588-5
Molecular formula
C6H16O3SSi
InChI key
UUEWCQRISZBELL-UHFFFAOYSA-N
Synonyms
Mercapto Silane Coupling Agent, 3-(Trimethoxysilyl)-1-propanethiol, (3-Mercaptopropyl)trimethoxysilane

Technical specifications

Properties

PropertyValueUnit
Physical StateLiquid-
Boiling Point219°C
Flash Point107°C
Specific Gravity1.060 (at 25 °C)-
Refractive Index1.44-
Solubility in WaterSoluble-
Molecular Weight196.4g/mol

Specifications

Test ConditionSpecificationValueUnitTest Method
-Average Particle Size7.3microns-
at 25 °CSpecific Gravity1.06--
at 25 °CMolecular weight196.4g/mol-
-Boiling Point219°C-
-Flash Point107°C-
-SP Value8.49--
at 25 °CRefractive Index1.44--
OptimumpH4--
-Minimum Covering Area398m2/g-
Industries
CASECareCeramics & glassChemical ManufacturingPaints & Coatings
Product groups
Silane Coupling AgentsSilanes & SiloxanesSilicones
Applications
PolymersResinsPaints & coatings formulationsGlass-reinforced composites
Functions
Surface modifierCoupling agentAdhesion promoter
Market segments
Paints & coatings additivesSpecialty chemicalsGlass & optics

Documents

  • Technical Data Sheet (TDS)

    Specifications & performance data

    Request a copy