Cyclopentasiloxane, 2,4,6,8,10-pentamethyl-

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

Molecular structure of 6166-86-5
US ProductionCBI
Import Value$537M
Top SourceChina 39%

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 293190 · basket

These shares come from HS customs code 293190, which covers 164 chemicals in total. They estimate the bucket's origin mix, not this chemical specifically.

Source Countries
CN 39%ChinaDE 17%GermanyIT 9%ItalyIN 7%IndiaJP 7%Japan
EPA-registered importers (1)
The Dow Chemical

Why It Matters

Sectors
Core Chemicals
Downstream UsesNo data available
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 1 sector as 1 functional role.

  • Intermediate in All Other Basic Inorganic Chemical Manufacturing (40%)Processing as a reactant

Chemical Identity

CAS6166-86-5
PubChem CID6327588
DTXSIDDTXSID80871154
FormulaC5H15O5Si5
Mol. Weight295.59 g/mol
SMILESC[Si]1O[Si](O[Si](O[Si](O[Si](O1)C)C)C)C

Data Sources

DTXSID808711542026-04-06

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

Archive: data/sources/comptox/dsstox_identifiers.csv

63275882026-04-06

https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/6327588/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON

Archive: data/sources/pubchem_properties/6327588.json

6166-86-52026-04-24

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

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

CAS 6166-86-52026-04-25

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

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