Disodium dinaphthylmethanedisulfonate

CAS 26545-58-4

Naphthalenesulfonic acid, methylenebis-, sodium salt (1:2)

Companies reported imports and no US production of this chemical to EPA for 2023.

US productionZero

Import value, 2024$40M

Import volume13.1K lb

Import dependency100%

Top sourceGermany 22%

Production is reported production, not a complete census of factories. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Disodium dinaphthylmethanedisulfonate · US import value by year

2013: $32M · Peak 2022: $41M · 2024: $40M · 2025: $33M

Where It Comes From

Customs basis: HS 290410 · basket

EPA reports by year

2023: US production Zero · Imports 13.1K lb

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 importers (1)

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

Atul Usa

Why It Matters

Sectors

Textiles

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

•Dye in Synthetic Dye and Pigment ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS26545-58-4

PubChem CIDNot recorded

DTXSIDDTXSID3041900

FormulaNot recorded

Mol. WeightNot recorded

SMILESNot recorded

Data Sources

EPA TSCA InventoryRetrieved 2026-04-29
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

Disodium dinaphthylmethanedisulfonate (CAS 26545-58-4) https://chemicalindependence.com/chemical/26545-58-4/ EPA TSCA Inventory: CAS 26545-58-4. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 26545-58-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 26545-58-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290410 for CAS 26545-58-4. Reporting year: 2024. https://usatrade.census.gov/