Octamethyltrisiloxane

Drug ingredient

This drug ingredient has classified U.S. production volumes. EPA withholds the number as confidential business information.

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 manufacturers (1)

The Dow Chemical

EPA-registered importers (1)

The Dow Chemical

Why It Matters

Sectors

Core ChemicalsHealthMetals & Mining

Downstream Uses

Appears in 1 drug and cosmetic product listings (FDA).

•Barrier Repair Cream

FDA Shortage Status

No FDA shortage records

Industrial Uses

Used in 2 sectors as 2 functional roles.

•Intermediate in All Other Basic Inorganic Chemical Manufacturing (20%)Processing as a reactant
•Heat transferring agent in All Other Chemical Product and Preparation Manufacturing (20%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.31/gAaron Chemicals LLC

CountryHong Kong

Pack$157.00 / 500 g

Purity98%

Vendors9 available

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

8 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.34	500 g	—
Fluorochem UK	United Kingdom	$0.60	100 g	—
AK Scientific, Inc.	United States	$0.87	100 g	98%
A2B Chem LLC	United States	$1.20	100 g	98%
Combi-Blocks, Inc.	United States	$1.20	100 g	98%
AA BLOCKS	United States	$1.32	25 g	98%
Angene International Limited	United States	$3.20	25 g	98%
Angene	China → Hong Kong	$4266.67	30 mg	—

Chemical Identity

CAS107-51-7

PubChem CID24705

DTXSIDDTXSID9040710

FormulaC8H24O2Si3

Mol. Weight236.53 g/mol

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

Data Sources

DTXSID90407102026-04-06

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

Archive: data/sources/comptox/dsstox_identifiers.csv

247052026-04-06

https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/24705/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON

Archive: data/sources/pubchem_properties/24705.json

107-51-72026-04-24

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

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

CAS 107-51-72026-04-25

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

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

← Back to Dashboard ← Back to Core Chemicals