4,4,15,15-Tetraethoxy-3,16-dioxa-8,9,10,11-tetrathia-4,15-disilaoctadecane

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

Molecular structure of 40372-72-3
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)
Safic Alcan · FR France
Chemspec
Michelin North America
Struktol Company Of America

Why It Matters

Sectors
TransportationMetals & MiningPlastics & RubberConsumer ProductsCore Chemicals
Downstream UsesNo data available
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 2 sectors as 2 functional roles.

  • Adhesion/cohesion promoter in Rubber Product Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • Fuel in Other (1%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.09/gA2B Chem LLC
CountryUnited States
Pack$85.00 / 1 kg
Purity95%
Vendors14 available

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

13 more vendors
VendorCountry$/gPackPurity
Aaron Chemicals LLCHong Kong$0.12500 g
ChemsceneUnited States$0.121 kg
Angene ChemicalChina Hong Kong$0.12500 g98%
AA BLOCKSUnited States$0.132.5 kg95%
Fluorochem UKUnited Kingdom$0.151 kg90%
MedChemExpress MCESweden$0.151 kg
Combi-Blocks, Inc.United States$0.251 kg95%
Fluorochem EUGermany$0.29100 g90%
AstaTech, IncUnited States$0.30500 g90%
Angene International LimitedUnited States$0.60500 g22.3%
AK Scientific SpecializedUnited States$0.61100 g22.3%
AK Scientific, Inc.United States$0.84100 g95%
AngeneChina Hong Kong$4266.6730 mg98%

Chemical Identity

CAS40372-72-3
PubChem CID162012
DTXSIDDTXSID3029362
FormulaC18H42O6S4Si2
Mol. Weight539 g/mol
SMILESCCO[Si](CCCSSSSCCC[Si](OCC)(OCC)OCC)(OCC)OCC

Data Sources

DTXSID30293622026-04-06

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

Archive: data/sources/comptox/dsstox_identifiers.csv

1620122026-04-06

https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/162012/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON

Archive: data/sources/pubchem_properties/162012.json

40372-72-32026-04-24

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

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

CAS 40372-72-32026-04-25

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

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