Phthalic anhydride
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$37M
Top SourceSouth Korea 34%
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 291735 · exact
Source Countries
Country of origin for US imports, from Census customs data (2023).
KR 34%South KoreaMX 32%MexicoIL 17%IsraelAT 9%AustriaBR 5%Brazil
- Canada
- Taiwan
- India
- China
- United Kingdom
- Turkey
- Japan
EPA-registered manufacturers (3)
Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.
ExxonMobil
Huntsman
Koppers
EPA-registered importers (16)
Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.
Orbia Advance Corp Sab De Cv · MX Mexico
Pos · KR South Korea
Allnex Usa
Coim Usa In.
Huntsman
Show all 16
Icc Industries
Lanxess
Mexichem Specialty Compounds Inc Dba Alphagary
Panolam Industries International
Polynt Composites Usa
Posco International America
Reichhold Llc 2
Soyventis North America
The Chemical
The Sherwin Williams
Univar Solutions
Why It Matters
Sectors
WaterConstructionPlastics & RubberTextilesPaints & CoatingsPaper & PrintingCore 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 12 sectors as 8 functional roles.
- •Monomers in Plastics Material and Resin Manufacturing (100%)Processing as a reactant
- •Polymerization promoter in All Other Basic Organic Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
- •Ion exchange agent in All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant
- •Intermediate in All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant
- •Intermediate in All Other Basic Inorganic Chemical Manufacturing (98%)Processing—incorporation into formulation, mixture, or reaction product
- •Solvent in Utilities (2%)Processing—incorporation into formulation, mixture, or reaction product
- •Polymerization promoter in Synthetic Dye and Pigment Manufacturing (30%)Processing as a reactant
- •Pigment in Printing Ink Manufacturing (10%)Processing as a reactant
- •Plasticizer in Plastics Product Manufacturing (60%)Processing as a reactant
- •Intermediate in Plastics Product Manufacturing (98%)Processing as a reactant
- •Plasticizer in Adhesive Manufacturing (100%)Processing as a reactant
- •Intermediate in Paint and Coating ManufacturingProcessing as a reactant
- •Plasticizer in Paint and Coating ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Solvent in Paint and Coating ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Intermediate in Plastics Material and Resin ManufacturingProcessing as a reactant
- •Intermediate in ConstructionProcessing as a reactant
- •Intermediate in Not Known or Reasonably AscertainableProcessing as a reactant
- •Hardener in Adhesive Manufacturing (98%)Processing—incorporation into formulation, mixture, or reaction product
- •Hardener in Rubber Product Manufacturing (2%)Processing—incorporation into formulation, mixture, or reaction product
Vendor Pricing
$0.03/gALFA AESAR
CountryGermany
Pack$126.00 / 5 kg
Purity99%
Vendors19 available
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
18 more vendors
| Vendor | Country Supplier country. Where available, shows shipping origin. When the supplier ships from a different country than where they are registered, both are shown. Most suppliers show registration country only. | $/g | Pack | Purity |
|---|---|---|---|---|
| A2B Chem LLC | United States | $0.03 | 500 g | 99% |
| AA BLOCKS | United States | $0.03 | 500 g | 99% |
| Sigma-Aldrich (Rush Stock) | Germany | $0.05 | 2.5 kg | 99% |
| Sigma-Aldrich | Germany | $0.05 | 2.5 kg | 99% |
| AK Scientific Specialized | United States | $0.09 | 1 kg | 98% |
| AK Scientific, Inc. | United States | $0.11 | 1 kg | 99% |
| Apollo Scientific US | United Kingdom | $0.15 | 1 kg | 95% |
| Combi-Blocks, Inc. | United States | $0.25 | 1 kg | 98% |
| Fluorochem EU | Germany | $0.53 | 100 g | 99% |
| Fluorochem UK | United Kingdom | $0.54 | 100 g | 99% |
| Labotest KG | Germany | $217.80 | 5000 mg | 90% |
| Otava, Ltd. | Ukraine | $460.00 | 250 mg | 90% |
| Key Organics Ltd. | United Kingdom | $1960.00 | 100 mg | 95% |
| Otava, Ltd. (2 weeks) | Ukraine | $2724.00 | 50 mg | 90% |
| Princeton BioMolecular Research (SC) | United States | $2900.00 | 100 mg | 90% |
| Vitas M Chemical Limited | Hong Kong | $3170.00 | 100 mg | 90% |
| Asinex | Netherlands | $6461.40 | 100 mg | 90% |
| TimTec, LLC (back-ordered) | United States | $32000.00 | 15 mg | 94% |
Chemical Identity
CAS85-44-9
PubChem CID6811
DTXSIDDTXSID2021159
FormulaC8H4O3
Mol. Weight148.11 g/mol
SMILESC1=CC=C2C(=C1)C(=O)OC2=O
Data Sources
DTXSID20211592026-04-06
https://doi.org/10.23645/epacomptox.5588566
Archive: data/sources/comptox/dsstox_identifiers.csv
68112026-04-06
https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/6811/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON
Archive: data/sources/pubchem_properties/6811.json
85-44-92026-04-24
https://www.epa.gov/chemical-data-reporting
Archive: data/sources/epa_cdr/2020_cdr.csv
CAS 85-44-92026-04-25
https://www.epa.gov/chemical-data-reporting
Archive: data/sources/epa_cdr/2020_cdr_industrial.csv