1H-Benzo[de]isoquinoline-1,3(2H)-dione

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

Molecular structure of 81-83-4
US ProductionCBI
Import Value$43M
Top SourceJapan 25%

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 292519 · basket

These shares come from HS customs code 292519, which covers 13 chemicals in total. They estimate the bucket's origin mix, not this chemical specifically.

Source Countries
JP 25%JapanCN 21%ChinaGB 21%United KingdomAT 14%AustriaDE 7%Germany

Why It Matters

Sectors
Textiles
Downstream UsesNo data available
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 1 sector as 1 functional role.

  • Pigment in Synthetic Dye and Pigment Manufacturing (100%)Processing as a reactant

Vendor Pricing

$0.47/gAaron Chemicals LLC
CountryHong Kong
Pack$118.00 / 250 g
Purity96%
Vendors27 available

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

26 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina Hong Kong$0.48250 g98%
Combi-Blocks, Inc.United States$0.50500 g97%
A2B Chem LLCUnited States$0.54100 g96%
BLD Pharmatech Co., LimitedUnited States$0.58500 g96%
BLD Pharmatech Ltd.China$0.58500 g96%
Ambeed, Inc.United States$0.58500 g96%
AA BLOCKSUnited States$0.60100 g96%
BLD Pharmatech GmbHGermany$0.75100 g96%
Fluorochem EUGermany$1.1125 g97%
AK Scientific SpecializedUnited States$1.33100 g95%
AK Scientific, Inc.United States$1.86100 g98%
Angene International LimitedUnited States$2.40100 g95%
ALFA AESARGermany$3.0250 g98%
Sigma-Aldrich (Rush Stock)Germany$3.0810 g99%
Sigma-AldrichGermany$3.0810 g99%
AstaTech (2 weeks)United States$9.605 g98%
InterbioscreenHong Kong$24.0010 g95%
TargetMol ChemicalsChina United States$325.00200 mg
Labotest KGGermany$453.001000 mg90%
Key Organics Ltd.United Kingdom$740.00100 mg95%
Maybridge, Ltd.United Kingdom$2414.30100 mg90%
Otava, Ltd.Ukraine$2724.0050 mg95%
Princeton BioMolecular Research (SC)United States$2900.00100 mg90%
Vitas M Chemical LimitedHong Kong$3170.00100 mg90%
AngeneChina Hong Kong$4266.6730 mg98%
TimTec, LLC (back-ordered)United States$32000.0015 mg94%

Chemical Identity

CAS81-83-4
PubChem CID66491
DTXSIDDTXSID0044731
FormulaC12H7NO2
Mol. Weight197.19 g/mol
SMILESC1=CC2=C3C(=C1)C(=O)NC(=O)C3=CC=C2

Data Sources

DTXSID00447312026-04-06

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

Archive: data/sources/comptox/dsstox_identifiers.csv

664912026-04-06

https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/66491/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON

Archive: data/sources/pubchem_properties/66491.json

81-83-42026-04-24

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

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

CAS 81-83-42026-04-25

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

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