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Benzenesulfonic acid, 3,3′-[methylenebis[[2,4(or 4,6)-dihydroxyphenylene]-2,1-diazenediyl]]bis-, potassium sodium salt (1:?:?)

CAS 243869-48-9

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

Molecular structure of 243869-48-9
US productionZero
Import value, 2024$6.1B
Import volume19.1K lb
Import dependency100%
Top sourceJapan 32%

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.

Benzenesulfonic acid, 3,3′-[methylenebis[[2,4(or 4,6)-dihydroxyphenylene]-2,1-diazenediyl]]bis-, potassium sodium salt (1:?:?) · US import value by year
$0M2013$7.7B2023$6.1B2024$5.9B2025

2013: $0M · Peak 2023: $7.7B · 2024: $6.1B · 2025: $5.9B

Where It Comes From

Customs basis: HS 382499 · basket

EPA reports by year
2023
US production Zero · Imports 19.1K lb
2019
US production Confidential · Imports Confidential

These shares come from HS customs code 382499, which covers 206 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
JP 32%JapanKR 27%South KoreaDE 8%GermanyCA 6%CanadaCN 4%China

Why It Matters

Sectors
Textiles
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

  • •Dye in Textiles, apparel, and leather manufacturing (100%)Processing—incorporation into article

Chemical Identity

CAS243869-48-9
PubChem CIDNot recorded
DTXSIDDTXSID601078220
FormulaNot recorded
Mol. WeightNot recorded
SMILESNot recorded

Data Sources

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Brief citations

Benzenesulfonic acid, 3,3′-[methylenebis[[2,4(or 4,6)-dihydroxyphenylene]-2,1-diazenediyl]]bis-, potassium sodium salt (1:?:?) (CAS 243869-48-9) https://chemicalindependence.com/chemical/243869-48-9/ EPA CompTox (DSSTox): DTXSID601078220. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID601078220 EPA Chemical Data Reporting: 243869-48-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 243869-48-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 382499 for CAS 243869-48-9. Reporting year: 2024. https://usatrade.census.gov/