2,7-Naphthalenedisulfonic acid, 3,6-dihydroxy-, sodium salt (1:2)

CAS 7153-21-1

Molecular structure of 7153-21-1 — 2 Na⁺

US productionNot reported

Import value, 2024$11M

Top sourceIndia 78%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

Why supply is unknown

Production is reported production, not a complete census of factories. 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

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

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Vendor Pricing

$0.53/gCombi-Blocks, Inc.

CountryUnited States

Pack$265.00 / 500 g

Purity98%

Vendors11 available

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

10 more vendors

Vendor	Country	$/g	Pack	Purity
AK Scientific Specialized	United States	$0.56	500 g	95%
BLD Pharmatech Ltd.	China	$0.57	500 g	98%
BLD Pharmatech Co., Limited	United States	$0.62	500 g	98%
Ambeed, Inc.	United States	$0.62	500 g	98%
AK Scientific, Inc.	United States	$0.75	500 g	98%
BLD Pharmatech GmbH	Germany	$0.79	100 g	98%
AstaTech (2 weeks)	United States	$1.42	100 g	95%
Princeton BioMolecular Research (SC)	United States	$5000.00	30 mg	90%
Vitas M Chemical Limited	Hong Kong	$5133.33	30 mg	90%
TimTec, LLC	United States	$79615.65	10 μmol	90%

Chemical Identity

CAS7153-21-1

PubChem CIDNot recorded

DTXSIDDTXSID2064579

FormulaC10H6Na2O8S2

Mol. Weight364.25 g/mol

SMILES[Na+].[Na+].OC1=CC2=CC(O)=C(C=C2C=C1S([O-])(=O)=O)S([O-])(=O)=O

Data Sources

EPA TSCA InventoryRetrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

2,7-Naphthalenedisulfonic acid, 3,6-dihydroxy-, sodium salt (1:2) (CAS 7153-21-1) https://chemicalindependence.com/chemical/7153-21-1/ EPA TSCA Inventory: CAS 7153-21-1. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 290899 for CAS 7153-21-1. Reporting year: 2024. https://usatrade.census.gov/