2,4-Dinitrophenol

CAS 51-28-5

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, 2024$11M

Top sourceIndia 78%

At least one company claimed its 2019 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

Production is reported production, not a complete census of factories. US production volume is confidential. Production reporting year: 2019. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 290899 · basket

EPA reports by year

2019: US production Confidential · Imports Confidential

These shares come from HS customs code 290899, which covers 60 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 78%IndiaCN 19%ChinaJP 1%JapanAE 1%United Arab Emirates

Italy
Hungary
Germany
Netherlands
Canada
Mexico

EPA-registered manufacturers (1)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Si Group Usa (Usaa)

Why It Matters

Sectors

Core Chemicals

Downstream UsesNot recorded

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

•Intermediate in All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant

Vendor Pricing

$0.19/gSigma-Aldrich (Rush Stock)

CountryGermany

Pack$189.46 / 1 kg

Purity98%

Vendors12 available

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

11 more vendors

Vendor	Country	$/g	Pack	Purity
Sigma-Aldrich	Germany	$0.19	1 kg	98%
A2B Chem LLC (2 weeks)	United States	$0.59	100 g	—
AA BLOCKS (2 weeks)	United States	$0.65	100 g	—
AstaTech, Inc	United States	$0.69	500 g	97%
Aaron Chemicals LLC	Hong Kong	$0.77	100 g	—
AK Scientific, Inc.	United States	$9.40	5 g	98%
Labotest KG	Germany	$217.80	5000 mg	90%
Otava, Ltd.	Ukraine	$460.00	250 mg	95%
Princeton BioMolecular Research (SC)	United States	$2900.00	100 mg	90%
Vitas M Chemical Limited	Hong Kong	$3170.00	100 mg	90%
ChemDiv, Inc.	United States	$4070.00	100 mg	90%

Chemical Identity

CAS51-28-5

PubChem CID1493

DTXSIDDTXSID0020523

FormulaC6H4N2O5

Mol. Weight184.11 g/mol

SMILESC1=CC(=C(C=C1[N+](=O)[O-])[N+](=O)[O-])O

Data Sources

EPA CompTox (DSSTox) · DTXSID0020523Retrieved 2026-04-06
PubChem · compound 1493Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

← Back to Dashboard ← Back to Core Chemicals

Brief citations

2,4-Dinitrophenol (CAS 51-28-5) https://chemicalindependence.com/chemical/51-28-5/ EPA CompTox (DSSTox): DTXSID0020523. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID0020523 PubChem: 1493. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/1493 EPA Chemical Data Reporting: 51-28-5. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 51-28-5. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290899 for CAS 51-28-5. Reporting year: 2024. https://usatrade.census.gov/