Naphthalenesulfonic acid, dinonyl-, zinc salt (2:1)

CAS 28016-00-4

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

Molecular structure of 28016-00-4 — 1 Zn²⁺

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Import value, 2024$40M

Top sourceGermany 22%

At least one company claimed its 2023 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: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 290410 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 290410, which covers 115 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).

DE 22%GermanyIT 20%ItalyCN 14%ChinaBE 11%BelgiumIN 11%India

Spain
Netherlands
Czech Republic
Brazil
Taiwan
Hong Kong

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.

King Industries

Why It Matters

Sectors

EnergyPaints & CoatingsCore 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

Used in 3 sectors as 1 functional role.

•Corrosion inhibitor in Paint and Coating ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Corrosion inhibitor in All Other Basic Organic Chemical ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Corrosion inhibitor in Petroleum Lubricating Oil and Grease ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS28016-00-4

PubChem CID18401379

DTXSIDDTXSID90890811

FormulaC56H86O6S2Zn

Mol. Weight984.8 g/mol

SMILESCCCCCCCCCC1=CC2=CC=CC=C2C(=C1CCCCCCCCC)S(=O)(=O)[O-].CCCCCCCCCC1=CC2=CC=CC=C2C(=C1CCCCCCCCC)S(=O)(=O)[O-].[Zn+2]

Data Sources

EPA CompTox (DSSTox) · DTXSID90890811Retrieved 2026-04-06
PubChem · compound 18401379Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Naphthalenesulfonic acid, dinonyl-, zinc salt (2:1) (CAS 28016-00-4) https://chemicalindependence.com/chemical/28016-00-4/ EPA CompTox (DSSTox): DTXSID90890811. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID90890811 PubChem: 18401379. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/18401379 EPA Chemical Data Reporting: 28016-00-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 28016-00-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290410 for CAS 28016-00-4. Reporting year: 2024. https://usatrade.census.gov/