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2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[2-[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]diazenyl]-, sodium salt (1:?)

CAS 78952-61-1

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

Molecular structure of 78952-61-1
4 Na⁺
US productionZero
Import value, 2024$309M
Import volume44.9K lb
Import dependency100%
Top sourceChina 40%

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.

2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[2-[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]diazenyl]-, sodium salt (1:?) · US import value by year
$292M2013$633M2022$309M2024$357M2025

2013: $292M · Peak 2022: $633M · 2024: $309M · 2025: $357M

Where It Comes From

Customs basis: HS 293369 · basket

EPA reports by year
2023
US production Not published · Imports Not published
2019
US production Zero · Imports 44.9K lb

These shares come from HS customs code 293369, which covers 192 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 40%ChinaJP 19%JapanIN 15%IndiaES 11%SpainDE 5%Germany
Domestic parents -- activity not disclosed (1)
Dystar

Why It Matters

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

Industrial Uses

  • •Dye in Textiles, apparel, and leather manufacturing (0%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS78952-61-1
PubChem CID166507
DTXSIDDTXSID901013835
FormulaC27H18ClN7Na4O16S5
Mol. Weight984.2 g/mol
SMILESC1=CC(=CC(=C1)S(=O)(=O)[O-])NC2=NC(=NC(=N2)Cl)NC3=C4C(=CC(=C3)S(=O)(=O)[O-])C=C(C(=C4O)N=NC5=CC=C(C=C5)S(=O)(=O)CCOS(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+]

Data Sources

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Brief citations

2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[2-[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]diazenyl]-, sodium salt (1:?) (CAS 78952-61-1) https://chemicalindependence.com/chemical/78952-61-1/ EPA CompTox (DSSTox): DTXSID901013835. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID901013835 PubChem: 166507. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/166507 EPA Chemical Data Reporting: 78952-61-1. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 78952-61-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293369 for CAS 78952-61-1. Reporting year: 2024. https://usatrade.census.gov/