Sodium trithiocarbonate

CAS 534-18-9

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

US productionCBI

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

Import value, 2024$32M

Top sourceChina 39%

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 284290 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 284290, which covers 96 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 39%ChinaDE 33%GermanyCA 9%CanadaGB 4%United KingdomJP 3%Japan

Taiwan
Colombia
Mexico
Denmark
Belgium
Sweden
Switzerland
Italy
Poland
Czech Republic
Armenia

EPA-registered manufacturers (2)

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

Buckman Laboratories

Why It Matters

Sectors

WaterCore 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

Used in 4 sectors as 3 functional roles.

•Intermediate in All Other Basic Inorganic Chemical Manufacturing (100%)Processing as a reactant
•CBI in CBICBI
•Solids separation (precipitating) agent, not otherwise specified in Utilities (50%)Use—non-incorporative activities
•Solids separation (precipitating) agent, not otherwise specified in All Other Basic Organic Chemical Manufacturing (50%)Use—non-incorporative activities

Vendor Pricing

$0.27/gAaron Chemicals LLC

CountryHong Kong

Pack$27.00 / 100 g

Purity40%

Vendors3 available

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

2 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$1.10	10 g	40%
Angene	China → Hong Kong	$4266.67	30 mg	40%

Chemical Identity

CAS534-18-9

PubChem CID101753

DTXSIDDTXSID7060203

FormulaCNa2S3

Mol. Weight154.2 g/mol

SMILESC(=S)([S-])[S-].[Na+].[Na+]

Data Sources

EPA CompTox (DSSTox) · DTXSID7060203Retrieved 2026-04-06
PubChem · compound 101753Retrieved 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

Sodium trithiocarbonate (CAS 534-18-9) https://chemicalindependence.com/chemical/534-18-9/ EPA CompTox (DSSTox): DTXSID7060203. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID7060203 PubChem: 101753. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/101753 EPA Chemical Data Reporting: 534-18-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 534-18-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 284290 for CAS 534-18-9. Reporting year: 2024. https://usatrade.census.gov/