Proxan-sodium

CAS 140-93-2

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

US productionZero

Import value, 2024$760M

Import volume379.2K 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.

Proxan-sodium · 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 379.2K lb
2019: US production Zero · Imports 813.2K 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

Domestic parents -- activity not disclosed (1)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

Montana Resources

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.

Eagle Mine

Wego Chemical Group

Why It Matters

Sectors

Metals & Mining

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

•Surfactant (surface active agent) in Mining (except Oil and Gas) and support activities (100%)Processing as a reactant

Vendor Pricing

$0.53/gMedChemExpress MCE

CountrySweden

Pack$262.57 / 500 g

PurityNot recorded

Vendors3 available

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

2 more vendors

Vendor	Country	$/g	Pack	Purity
Combi-Blocks, Inc.	United States	$0.72	500 g	90%
MedKoo Biosciences, Inc	United States	$320.00	1 g	98%

Chemical Identity

CAS140-93-2

PubChem CID23690438

DTXSIDDTXSID8027084

FormulaC4H7NaOS2

Mol. Weight158.2 g/mol

SMILESCC(C)OC(=S)[S-].[Na+]

Data Sources

EPA CompTox (DSSTox) · DTXSID8027084Retrieved 2026-04-06
PubChem · compound 23690438Retrieved 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

← Back to Dashboard ← Back to Metals & Mining

Brief citations

Proxan-sodium (CAS 140-93-2) https://chemicalindependence.com/chemical/140-93-2/ EPA CompTox (DSSTox): DTXSID8027084. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID8027084 PubChem: 23690438. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/23690438 EPA Chemical Data Reporting: 140-93-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 140-93-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293090 for CAS 140-93-2. Reporting year: 2024. https://usatrade.census.gov/