Trisiloxane, 1,5-diethenyl-3,3-bis[(ethenyldimethylsilyl)oxy]-1,1,5,5-tetramethyl-

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

US ProductionCBI

Import Value$537M

Import VolumeZero

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 manufacturers (2)

The Dow Chemical

Weylchem Us

Why It Matters

Sectors

Paper & PrintingCore Chemicals

Downstream UsesNo data available

FDA Shortage Status

No FDA shortage records

Industrial Uses

Used in 2 sectors as 2 functional roles.

•Terminator/Blocker in All Other Basic Inorganic Chemical Manufacturing (100%)Processing as a reactant
•Intermediate in Paper ManufacturingProcessing as a reactant

Vendor Pricing

$1.03/gAaron Chemicals LLC

CountryHong Kong

Pack$515.00 / 500 g

Purity97%

Vendors14 available

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

13 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$1.04	500 g	97%
A2B Chem LLC	United States	$1.60	25 g	98%
Combi-Blocks, Inc.	United States	$1.80	100 g	98%
AA BLOCKS	United States	$1.92	25 g	98%
Chemscene	United States	$2.00	100 g	—
BLD Pharmatech GmbH	Germany	$2.10	100 g	98%
BLD Pharmatech Ltd.	China	$2.10	100 g	98%
BLD Pharmatech Co., Limited	United States	$2.40	25 g	98%
Ambeed, Inc.	United States	$2.40	25 g	98%
MedChemExpress MCE	Sweden	$2.50	100 g	—
Fluorochem UK	United Kingdom	$2.86	25 g	95%
AstaTech (2 weeks)	United States	$20.20	5 g	95%
Angene	China → Hong Kong	$4266.67	30 mg	97%

Chemical Identity

CAS60111-54-8

PubChem CID6453911

DTXSIDDTXSID6074629

FormulaC16H36O4Si5

Mol. Weight432.9 g/mol

SMILESC[Si](C)(C=C)O[Si](O[Si](C)(C)C=C)(O[Si](C)(C)C=C)O[Si](C)(C)C=C

Data Sources

DTXSID60746292026-04-06

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

Archive: data/sources/comptox/dsstox_identifiers.csv

64539112026-04-06

https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/6453911/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON

Archive: data/sources/pubchem_properties/6453911.json

60111-54-82026-04-24

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

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

CAS 60111-54-82026-04-25

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

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

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