Silicon
U.S. production volumes are classified as confidential business information.
US ProductionCBI
Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.
Import Value$102M
Top SourceGermany 51%
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 280461 · exact
Source Countries
Country of origin for US imports, from Census customs data (2023).
DE 51%GermanyTW 24%TaiwanJP 8%JapanCN 7%ChinaKR 4%South Korea
- Vietnam
- Norway
- Ukraine
- Singapore
- Canada
- Spain
- Netherlands
EPA-registered manufacturers (15)
Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.
Ferroglobe Plc · GB United Kingdom
Aleris Rolled Products
Allied Metal
Arconic
Ecka Granules Of America
Show all 15
Globe Specialty Metals
Hemlock Semiconductor Operations
Luvata Appleton
Mississippi Silicon
Mitsubishi Polycrystalline Silicon America
Momentive Performance Materials
North American Hoganas
Rec Silicon
Tennessee Aluminum Processors
Top Die Casting
EPA-registered importers (45)
Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.
Basf Se · DE Germany
Glencore Plc · CH Switzerland
Hindalco Industries · IN India
Keihin Thermal Technology · JP Japan
Toyota Tsusho · JP Japan
Show all 45
Uacj · JP Japan
3M
Alcoa
Aleris Rolled Products
Allied Mineral Products, Llc.
Alter Trading
American Metal Fibers
Arconic
Basf
Basstech International
Berkshire Hathaway
California Steel Industries
Cbc America
Century Aluminum
Cleveland-Cliffs
Elg Metals
Glencore
Honda Trading America
Kaiser Aluminum Investment
Keihin Thermal Technology Of America
Mitsubishi Corp (Americas)
Neenah Enterprises
Novelis
Nucor
Omnisource
Rio Tinto America Holdings
Saint-Gobain
Schnitzer Steel
Schnitzer Steel Industries
Scm Metal Products
Specialty Minerals
St. Marys Cement In
Steel Dynamics
Steel Of West Virginia
Sterling Steel
The Dow Chemical
The Lincoln Electric
Tms International
Toyota Tsusho America
Tri-Arrows Aluminum
Why It Matters
Sectors
EnergyWaterElectronicsTransportationConstructionMetals & MiningPlastics & RubberConsumer ProductsPaints & CoatingsCore Chemicals
Downstream UsesNo data available
FDA Shortage Status
Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."
No FDA shortage records
Industrial Uses
Used in 13 sectors as 8 functional roles.
- •Abrasives in Miscellaneous Manufacturing (0%)Processing—incorporation into article
- •Alloys in Primary Metal Manufacturing (50%)Processing—incorporation into article
- •Alloys in Fabricated Metal Product Manufacturing (30%)Processing—incorporation into article
- •Alloys in Transportation Equipment Manufacturing (10%)Processing—incorporation into article
- •Alloys in Wholesale and Retail Trade (10%)Processing—incorporation into article
- •Alloys in OtherProcessing—incorporation into article
- •Hardener in Non-metallic Mineral Product Manufacturing (includes clay, glass, cement, concrete, lime, gypsum, and other non-metallic mineral product manufacturing) (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Alloys in Miscellaneous Manufacturing (1%)Processing—incorporation into article
- •Pigment in Paint and Coating Manufacturing (55%)Processing—incorporation into formulation, mixture, or reaction product
- •Intermediate in Primary Metal Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Intermediate in All Other Chemical Product and Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Fillers in Machinery ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Intermediate in All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant
- •Intermediate in All Other Basic Inorganic Chemical Manufacturing (100%)Processing as a reactant
- •Oxidizing/reducing agents in Primary Metal Manufacturing (15%)Processing—incorporation into article
- •Semiconductor and photovoltaic agent in Electrical Equipment, Appliance, and Component ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
Chemical Identity
CAS7440-21-3
PubChem CID5461123
DTXSIDDTXSID0051441
FormulaSi
Mol. Weight28.085 g/mol
SMILES[Si]
Data Sources
DTXSID00514412026-04-06
https://doi.org/10.23645/epacomptox.5588566
Archive: data/sources/comptox/dsstox_identifiers.csv
54611232026-04-06
https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/5461123/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON
Archive: data/sources/pubchem_properties/5461123.json
7440-21-32026-04-24
https://www.epa.gov/chemical-data-reporting
Archive: data/sources/epa_cdr/2020_cdr.csv
CAS 7440-21-32026-04-07
https://open.fda.gov/data/ndc/
Archive: data/sources/fda/ndc/ndc.json