Duralink HTS

CAS 5719-73-3

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

Molecular structure of 5719-73-3 — 2 Na⁺

US productionCBI

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

Import value, 2024$760M

Import volume1.3M lb

Top sourceChina 33%

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 293090 · basket

EPA reports by year

2023: US production Confidential · Imports 1.3M lb
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 293090, which covers 418 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).

CN 33%ChinaES 14%SpainCH 9%SwitzerlandIT 7%ItalyIN 7%India

Israel
Croatia
Ukraine
Slovakia
United Arab Emirates
Ireland
Poland
Lithuania
Brazil
Singapore
Australia
Armenia
Hong Kong
Vietnam
Czech Republic
Hungary
Greece
Russia

EPA-registered importers (2)

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

Michelin North America

Michelin North American

Why It Matters

Sectors

Metals & MiningPlastics & Rubber

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 2 sectors as 2 functional roles.

•Stabilizing agent in Rubber Product Manufacturing (99%)Processing—incorporation into article
•Stabilizing agent in Other (1%)Processing—incorporation into article
•Adhesion/cohesion promoter in Rubber Product Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.59/gBLD Pharmatech Ltd.

CountryChina

Pack$295.00 / 500 g

Purity98%

Vendors3 available

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

2 more vendors

Vendor	Country	$/g	Pack	Purity
Ambeed, Inc.	United States	$0.59	500 g	98%
AstaTech (2 weeks)	United States	$1.88	25 g	95%

Chemical Identity

CAS5719-73-3

PubChem CID79797

DTXSIDDTXSID3042473

FormulaC6H12Na2O6S4

Mol. Weight354.4 g/mol

SMILESC(CCCSS(=O)(=O)[O-])CCSS(=O)(=O)[O-].[Na+].[Na+]

Data Sources

EPA CompTox (DSSTox) · DTXSID3042473Retrieved 2026-04-06
PubChem · compound 79797Retrieved 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

Duralink HTS (CAS 5719-73-3) https://chemicalindependence.com/chemical/5719-73-3/ EPA CompTox (DSSTox): DTXSID3042473. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID3042473 PubChem: 79797. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/79797 EPA Chemical Data Reporting: 5719-73-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 5719-73-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293090 for CAS 5719-73-3. Reporting year: 2024. https://usatrade.census.gov/