4H-3,1-Benzoxazin-4-one, 2,2'-(1,4-phenylene)bis-

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

Molecular structure of 18600-59-4
US ProductionCBI
Import Value$6.4B
Top SourceSingapore 36%

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 293499 · basket

These shares come from HS customs code 293499, which covers 57 chemicals in total. They estimate the bucket's origin mix, not this chemical specifically.

Source Countries
SG 36%SingaporeIE 23%IrelandCN 11%ChinaCH 6%SwitzerlandIN 5%India
EPA-registered manufacturers (1)
Solvay

Why It Matters

Sectors
Plastics & Rubber
Downstream UsesNo data available
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 1 sector as 1 functional role.

  • UV stabilizer in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.83/gAaron Chemicals LLC
CountryHong Kong
Pack$414.00 / 500 g
Purity98%
Vendors17 available

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

16 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina Hong Kong$0.89500 g98%
Combi-Blocks, Inc.United States$1.40100 g98%
BLD Pharmatech Ltd.China$1.54100 g95%
A2B Chem LLCUnited States$1.60100 g98%
AA BLOCKSUnited States$1.85100 g98%
AK Scientific SpecializedUnited States$2.40100 g95%
Ambeed, Inc.United States$2.5010 g95%
AK Scientific, Inc.United States$3.21100 g99%
Angene International LimitedUnited States$5.28100 g99%
AstaTech (2 weeks)United States$180.005 g95%
Labotest KGGermany$453.001000 mg90%
Vitas M Chemical LimitedHong Kong$4020.0050 mg90%
Princeton BioMolecular Research (SC)United States$4200.0050 mg90%
AngeneChina Hong Kong$4266.6730 mg98%
AsinexNetherlands$9292.8050 mg90%
TimTec, LLC (back-ordered)United States$32000.0015 mg94%

Chemical Identity

CAS18600-59-4
PubChem CID3098422
DTXSIDDTXSID40864845
FormulaC22H12N2O4
Mol. Weight368.3 g/mol
SMILESC1=CC=C2C(=C1)C(=O)OC(=N2)C3=CC=C(C=C3)C4=NC5=CC=CC=C5C(=O)O4

Data Sources

DTXSID408648452026-04-06

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

Archive: data/sources/comptox/dsstox_identifiers.csv

30984222026-04-06

https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/3098422/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON

Archive: data/sources/pubchem_properties/3098422.json

18600-59-42026-04-24

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

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

CAS 18600-59-42026-04-25

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

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