Naphthalene
Drug ingredientCAS 91-20-3
This drug ingredient has classified U.S. production volumes. EPA withholds the number 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, 2024$73M
Top sourceIndia 33%
At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.
Why supply is unknownProduction 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 270740, 290290 · basket
EPA reports by year
- 2023
- US production Confidential · Imports Confidential
- 2019
- US production Confidential · Imports Confidential
These shares come from HS customs code 270740, 290290, which covers 172 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.
Source Countries
Country of origin for US imports, from Census customs data (2024).
IN 33%IndiaES 12%SpainTW 11%TaiwanDE 10%GermanyCN 8%China
- Netherlands
- Switzerland
- Pakistan
- United Kingdom
- Austria
- Indonesia
- Lithuania
- Hong Kong
- Finland
EPA-registered manufacturers (8)
Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.
Shell Plc · GB United Kingdom
Coopers Creek Chemical
Koppers
Lone Star Specialty Products
Shell Chemical Appalachia
Show all 8
Shell Petroleum
Trafigura Trading
Tri-Chem Industries
Domestic parents -- activity not disclosed (1)
EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.
Tartan Oil
EPA-registered importers (12)
Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.
Clariant International · CH Switzerland
Shell Plc · GB United Kingdom
Brenntag Lubricants
Clariant
Exxonmobil Product Solutions, A Div Of Exxon Mobil
Show all 12
Geo Specialty Chemicals
Gunvor Usa
Ies Downstream
Mie
Nalco- An Ecolab
Par Pacific Holdings
Radiac Abrasives
14 FDA-registered drug labelers
Apex Energetics Inc.
Be Well Medical dba Richard Clement Nutrition y Be Well Homeopathics
Bestmade Natural Products
BioActive Nutritional, Inc.
Boiron
Deseret Biologicals, Inc.
Energique, Inc.
Homeocare Laboratories
King Bio Inc.
Newton Laboratories, Inc.
Nutritional Specialties, Inc.
Professional Complementary Health Formulas
Ratis, LLC
Silver Star Brands
Why It Matters
Sectors
HealthAgricultureEnergyElectronicsTransportationConstructionMetals & MiningPlastics & RubberTextilesConsumer ProductsPaints & CoatingsPaper & PrintingCore Chemicals
Downstream Uses
Appears in 22 drug and cosmetic product listings (FDA).
- •Bestmade Natural Products BM13
- •Industriox
- •Allergy Relief Indoor and Outdoor
- •Lung Drops
- •EyeClear Pro
- •Bestmade Natural Products BM26
- •Household Detox
- •Para-Si
Show all 22
- •Cataracc
- •Industriox 6011
- •Respiratory Plus
- •Household Antigens
- •D08 LNG-DRN
- •Breathe-Ease
- •Enviro Detox 6009
- •Opsin II 6015
- •Allergy Escape
- •Visual Detox 6037
- •Bestmade Natural Products BM13 Pellets
- •Tartarus Combination 9259
- •Tobaccotox
- •Naphthalinum
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 20 sectors as 9 functional roles.
- •Intermediate in Petrochemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Fuel agents in Petroleum Refineries (100%)Processing as a reactant
- •Fuel in Petroleum Refineries (100%)Use—non-incorporative activities
- •Binder in Wood Product Manufacturing (3%)Processing—incorporation into formulation, mixture, or reaction product
- •Fuel agents in Services (0%)Processing—incorporation into formulation, mixture, or reaction product
- •Solvent in Oil and Gas Drilling, Extraction, and Support activities (40%)Use—non-incorporative activities
- •Solvent in Petroleum Refineries (60%)Use—non-incorporative activities
- •Solvent in Miscellaneous ManufacturingProcessing—incorporation into article
- •Solvent in Paint and Coating ManufacturingProcessing—incorporation into article
- •Fuel in Wholesale and Retail Trade (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Intermediate in All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant
- •Monomers in All Other Chemical Product and Preparation Manufacturing (100%)Processing as a reactant
- •Abrasives in Miscellaneous Manufacturing (100%)Processing as a reactant
- •Fuel agents in Wholesale and Retail TradeProcessing—incorporation into formulation, mixture, or reaction product
- •Solvent in Plastics Product ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Solvent in Printing Ink ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Solvent in Transportation Equipment ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Solvent in Furniture and Related Product ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Solvent in Adhesive ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Solvent in Electrical Equipment, Appliance, and Component ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Solvent in ConstructionProcessing—incorporation into formulation, mixture, or reaction product
- •Fuel in All other Petroleum and Coal Products Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Fuel in Petrochemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Intermediate in All Other Chemical Product and Preparation Manufacturing (100%)Processing as a reactant
- •Binder in Paint and Coating ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Surfactant (surface active agent) in All Other Chemical Product and Preparation Manufacturing (10%)Processing as a reactant
- •Surfactant (surface active agent) in Textiles, apparel, and leather manufacturing (10%)Processing as a reactant
- •Soil amendments (fertilizers) in Agriculture, Forestry, Fishing and Hunting (10%)Processing as a reactant
- •Surfactant (surface active agent) in Construction (40%)Processing as a reactant
Chemical Identity
CAS91-20-3
PubChem CID931
DTXSIDDTXSID8020913
FormulaC10H8
Mol. Weight128.17 g/mol
SMILESC1=CC=C2C=CC=CC2=C1
Data Sources
- EPA CompTox (DSSTox) · DTXSID8020913Retrieved 2026-04-06
- PubChem · compound 931Retrieved 2026-04-06
- EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
- FDA National Drug Code directoryRetrieved 2026-04-07
- US Census international tradeReporting year: 2024 · Retrieved 2026-10-04
Brief citations
Naphthalene (CAS 91-20-3) https://chemicalindependence.com/chemical/91-20-3/ EPA CompTox (DSSTox): DTXSID8020913. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID8020913 PubChem: 931. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/931 EPA Chemical Data Reporting: 91-20-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting FDA National Drug Code directory: CAS 91-20-3. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 270740,290290 for CAS 91-20-3. Reporting year: 2024. https://usatrade.census.gov/