1-Propanesulfonic acid, 3,3'-dithiobis-, sodium salt (1:2)

CAS 27206-35-5

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

Molecular structure of 27206-35-5 — 2 Na⁺

US productionZero

Import value, 2024$760M

Import volume165 lb

Import dependency100%

Top sourceChina 33%

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.

1-Propanesulfonic acid, 3,3'-dithiobis-, sodium salt (1:2) · US import value by year

2013: $743M · Peak 2022: $984M · 2024: $760M · 2025: $751M

Where It Comes From

Customs basis: HS 293090 · basket

EPA reports by year

2023: US production Zero · Imports 165 lb

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 (1)

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

Macdermid

Why It Matters

Sectors

Core 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

•Plating agent in All Other Chemical Product and Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.10/gAaron Chemicals LLC

CountryHong Kong

Pack$52.00 / 500 g

Purity90%

Vendors16 available

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

15 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.12	500 g	90%
A2B Chem LLC	United States	$0.13	500 g	95%
BLD Pharmatech Ltd.	China	$0.17	1 kg	97%
BLD Pharmatech GmbH	Germany	$0.17	500 g	97%
AA BLOCKS	United States	$0.17	500 g	95%
Combi-Blocks, Inc.	United States	$0.25	1 kg	95%
Ambeed, Inc.	United States	$0.50	100 g	97%
AK Scientific Specialized	United States	$0.51	100 g	95%
Fluorochem UK	United Kingdom	$0.51	25 g	90%
AK Scientific, Inc.	United States	$0.68	100 g	98%
BLD Pharmatech Co., Limited	United States	$0.80	25 g	97%
Angene International Limited	United States	$1.14	100 g	95%
AstaTech, Inc	United States	$1.25	100 g	95%
Labotest KG	Germany	$453.00	1000 mg	90%
Angene	China → Hong Kong	$4266.67	30 mg	90%

Chemical Identity

CAS27206-35-5

PubChem CIDNot recorded

DTXSIDDTXSID00889695

FormulaC6H12Na2O6S4

Mol. Weight354.38 g/mol

SMILES[Na+].[Na+].[O-]S(=O)(=O)CCCSSCCCS([O-])(=O)=O

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

← Back to Dashboard ← Back to Core Chemicals

Brief citations

1-Propanesulfonic acid, 3,3'-dithiobis-, sodium salt (1:2) (CAS 27206-35-5) https://chemicalindependence.com/chemical/27206-35-5/ EPA TSCA Inventory: CAS 27206-35-5. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 27206-35-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 27206-35-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293090 for CAS 27206-35-5. Reporting year: 2024. https://usatrade.census.gov/