3-Mercaptopropyltrimethoxysilane

U.S. production volumes are classified as confidential business information.

Molecular structure of 4420-74-0
US ProductionCBI
Import Value$760M
Top SourceChina 33%

The EPA did not publish how much of this chemical companies made or imported, or marked that amount confidential. Without that volume, ACID cannot calculate import dependency.

Where It Comes From

Customs basis: HS 293090 · basket

These shares come from HS customs code 293090, which covers 111 chemicals in total. They estimate the bucket's origin mix, not this chemical specifically.

Source Countries
CN 33%ChinaES 14%SpainCH 9%SwitzerlandIT 7%ItalyIN 7%India
EPA-registered importers (4)
Evonik
K&M Holdings Group
Momentive Performance Materials
Shin Etsu Silicones Of America

Why It Matters

Sectors
ConstructionPlastics & RubberPaints & Coatings
Downstream UsesNo data available
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 5 sectors as 5 functional roles.

  • Adhesives and sealant chemicals in Adhesive Manufacturing (100%)Processing as a reactant
  • Adhesion/cohesion promoter in Rubber Product Manufacturing (50%)Processing—incorporation into article
  • Adhesion/cohesion promoter in Adhesive Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product
  • Paint additives and coating additives not described by other categories in Paint and Coating Manufacturing (100%)Processing as a reactant
  • Plating agents and surface treating agents in Plastics Product Manufacturing (25%)Processing as a reactant
  • Intermediate in Synthetic Rubber Manufacturing (100%)Processing as a reactant

Vendor Pricing

$0.03/gAaron Chemicals LLC
CountryHong Kong
Pack$17.00 / 500 g
Purity95%
Vendors15 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

14 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina Hong Kong$0.04500 g95%
Manchester OrganicsUnited Kingdom$0.07500 g97%
Fluorochem UKUnited Kingdom$0.14100 g95%
A2B Chem LLCUnited States$0.17500 g95%
AK Scientific SpecializedUnited States$0.18500 g95%
AA BLOCKSUnited States$0.22500 g95%
AK Scientific, Inc.United States$0.24500 g98%
Ambeed, Inc.United States$0.52100 g98%
Sigma-Aldrich (Rush Stock)Germany$1.43500 g95%
Sigma-AldrichGermany$1.43500 g95%
AstaTech (2 weeks)United States$1.7625 g95%
Angene International LimitedUnited States$2.8425 g98%
InterbioscreenHong Kong$51.0010 g95%
AngeneChina Hong Kong$4266.6730 mg95%

Chemical Identity

CAS4420-74-0
PubChem CID20473
DTXSIDDTXSID2044428
FormulaC6H16O3SSi
Mol. Weight196.34 g/mol
SMILESCO[Si](CCCS)(OC)OC

Data Sources

DTXSID20444282026-04-06

https://doi.org/10.23645/epacomptox.5588566

Archive: data/sources/comptox/dsstox_identifiers.csv

204732026-04-06

https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/20473/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON

Archive: data/sources/pubchem_properties/20473.json

4420-74-02026-04-24

https://www.epa.gov/chemical-data-reporting

Archive: data/sources/epa_cdr/2020_cdr.csv

CAS 4420-74-02026-04-25

https://www.epa.gov/chemical-data-reporting

Archive: data/sources/epa_cdr/2020_cdr_industrial.csv