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Hexamethyldisiloxane

CAS 107-46-0

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

Molecular structure of 107-46-0
US productionCBI
Import value, 2024$537M
Top sourceChina 39%

At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

Production is reported production, not a complete census of factories. US production volume is confidential. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 293190 · basket

EPA reports by year
2023
US production Confidential · Imports Confidential
2019
US production Confidential · Imports Confidential

These shares come from HS customs code 293190, which covers 378 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 39%ChinaDE 17%GermanyIT 9%ItalyIN 7%IndiaJP 7%Japan
EPA-registered manufacturers (4)
Kcc · KR South Korea
Ab Specialty Silicones
Dow Chemical
Mom Holding
Domestic parents -- activity not disclosed (3)
Milliken &
Wacker Chemical Corporation - Headquarters
Wego Chemical Group
EPA-registered importers (7)
Kcc · KR South Korea
Aceto Us
Brb North America
Cabot
Chemical Distribution Network
Show all 7
Mak Chemicals
Shin Etsu Silicones Of America

Why It Matters

Sectors
FoodElectronicsConstructionMetals & MiningPlastics & RubberConsumer ProductsPaints & CoatingsCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 11 sectors as 11 functional roles.

  • •Intermediate in All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant
  • •Intermediate in All Other Chemical Product and Preparation Manufacturing (16%)Processing—repackaging
  • •Insulators in Construction (42%)Processing—incorporation into article
  • •Surface modifier in Adhesive Manufacturing (100%)Processing as a reactant
  • •Binder in Food, beverage, and tobacco product manufacturingProcessing as a reactant
  • •Solvent in Food, beverage, and tobacco product manufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Terminator/Blocker in Synthetic Rubber ManufacturingProcessing as a reactant
  • •Diluent in Miscellaneous ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Solvent in Paint and Coating ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Terminator/Blocker in All Other Chemical Product and Preparation ManufacturingProcessing as a reactant
  • •Anti-adhesive/cohesive in Food, beverage, and tobacco product manufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Terminator/Blocker in Food, beverage, and tobacco product manufacturingProcessing as a reactant
  • •Intermediate in All Other Basic Inorganic Chemical Manufacturing (100%)Processing as a reactant
  • •Intermediate in Soap, Cleaning Compound, and Toilet Preparation Manufacturing (1%)Processing—incorporation into formulation, mixture, or reaction product
  • •Cleaning agent in Soap, Cleaning Compound, and Toilet Preparation Manufacturing (1%)Processing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in Adhesive Manufacturing (30%)Processing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in Electrical Equipment, Appliance, and Component Manufacturing (1%)Processing—repackaging
  • •Dispersing agent in Paint and Coating ManufacturingProcessing as a reactant
  • •Diluent in All Other Chemical Product and Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Terminator/Blocker in All Other Basic Organic Chemical Manufacturing (90%)Processing as a reactant
  • •Adhesion/cohesion promoter in Synthetic Rubber Manufacturing (20%)Processing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in Synthetic Rubber Manufacturing (80%)Processing as a reactant

Vendor Pricing

$0.02/gAaron Chemicals LLC
CountryHong Kong
Pack$9.00 / 500 g
PurityNot recorded
Vendors10 available

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

9 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.02500 g—
Fluorochem UKUnited Kingdom$0.111 kg98%
Manchester OrganicsUnited Kingdom$0.20250 g99%
Combi-Blocks, Inc.United States$0.251 kg98%
Sigma-Aldrich (Rush Stock)Germany$0.65100 g99.5%
Sigma-AldrichGermany$0.65100 g99.5%
A2B Chem LLC (1 week)United States$878.00500 mg—
AA BLOCKS (1 week)United States$926.00500 mg—
AngeneChina → Hong Kong$4266.6730 mg—

Chemical Identity

CAS107-46-0
PubChem CID24764
DTXSIDDTXSID4026769
FormulaC6H18OSi2
Mol. Weight162.38 g/mol
SMILESC[Si](C)(C)O[Si](C)(C)C

Data Sources

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Brief citations

Hexamethyldisiloxane (CAS 107-46-0) https://chemicalindependence.com/chemical/107-46-0/ EPA CompTox (DSSTox): DTXSID4026769. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID4026769 PubChem: 24764. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/24764 EPA Chemical Data Reporting: 107-46-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 107-46-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293190 for CAS 107-46-0. Reporting year: 2024. https://usatrade.census.gov/