Potassium 2,5-dihydroxybenzenesulfonate

CAS 21799-87-1

Companies reported imports and no US production of this chemical to EPA for 2019.

Molecular structure of 21799-87-1 — 1 K⁺

US productionZero

Import value, 2024$11M

Import volume50.5K lb

Import dependency100%

Top sourceIndia 78%

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

Potassium 2,5-dihydroxybenzenesulfonate · US import value by year

2013: $14M · Peak 2022: $18M · 2024: $11M · 2025: $7M

Where It Comes From

Customs basis: HS 290899 · basket

EPA reports by year

2019: US production Zero · Imports 50.5K lb

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 importers (1)

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

Charkit Chemical

Why It Matters

Sectors

Electronics

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

•Plating agents and surface treating agents in Computer and Electronic Product Manufacturing (0%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.07/gAaron Chemicals LLC

CountryHong Kong

Pack$34.00 / 500 g

Purity98%

Vendors18 available

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

17 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.08	500 g	98%
A2B Chem LLC	United States	$0.11	1 kg	98%
Fluorochem EU	Germany	$0.12	500 g	98%
AA BLOCKS	United States	$0.13	1 kg	98%
BLD Pharmatech Ltd.	China	$0.15	1 kg	98%
BLD Pharmatech Co., Limited	United States	$0.18	500 g	98%
BLD Pharmatech GmbH	Germany	$0.18	500 g	98%
Ambeed, Inc.	United States	$0.18	500 g	98%
ALFA AESAR	Germany	$0.23	500 g	98%
Combi-Blocks, Inc.	United States	$0.25	1 kg	96%
AK Scientific Specialized	United States	$0.30	100 g	95%
AK Scientific, Inc.	United States	$0.40	100 g	98%
Sigma-Aldrich (Rush Stock)	Germany	$0.43	100 g	—
Sigma-Aldrich	Germany	$0.43	100 g	—
Angene International Limited	United States	$0.82	100 g	95%
AstaTech (2 weeks)	United States	$30.00	1 g	95%
Angene	China → Hong Kong	$4266.67	30 mg	98%

Chemical Identity

CAS21799-87-1

PubChem CID23672329

DTXSIDDTXSID8044410

FormulaC6H5KO5S

Mol. Weight228.27 g/mol

SMILESC1=CC(=C(C=C1O)S(=O)(=O)[O-])O.[K+]

Data Sources

EPA CompTox (DSSTox) · DTXSID8044410Retrieved 2026-04-06
PubChem · compound 23672329Retrieved 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

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Brief citations

Potassium 2,5-dihydroxybenzenesulfonate (CAS 21799-87-1) https://chemicalindependence.com/chemical/21799-87-1/ EPA CompTox (DSSTox): DTXSID8044410. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID8044410 PubChem: 23672329. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/23672329 EPA Chemical Data Reporting: 21799-87-1. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 21799-87-1. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290899 for CAS 21799-87-1. Reporting year: 2024. https://usatrade.census.gov/