Calcium polysulfide

CAS 1344-81-6

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

Molecular structure of 1344-81-6 — 1 Ca²⁺

US productionCBI

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

Import value, 2024$23M

Top sourceAustria 29%

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 283090 · basket

EPA reports by year

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

These shares come from HS customs code 283090, which covers 34 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).

AT 29%AustriaDE 17%GermanyGB 13%United KingdomCN 9%ChinaIN 8%India

Philippines
Mexico
Netherlands
Malaysia
Singapore

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.

Tessenderlo Group Nv/Sa · BE Belgium

Tessenderlo Kerley

Why It Matters

Sectors

AgricultureCore 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 2 sectors as 2 functional roles.

•Reducing agent in Services (82%)Use—non-incorporative activities
•Soil amendments (fertilizers) in Pesticide, Fertilizer, and Other Agricultural Chemical Manufacturing (18%)Processing—repackaging

Chemical Identity

CAS1344-81-6

PubChem CID121494065

DTXSIDDTXSID7034414

FormulaCaS5

Mol. Weight200.4 g/mol

SMILES[S-]SSS[S-].[Ca+2]

Data Sources

EPA CompTox (DSSTox) · DTXSID7034414Retrieved 2026-04-06
PubChem · compound 121494065Retrieved 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

Calcium polysulfide (CAS 1344-81-6) https://chemicalindependence.com/chemical/1344-81-6/ EPA CompTox (DSSTox): DTXSID7034414. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID7034414 PubChem: 121494065. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/121494065 EPA Chemical Data Reporting: 1344-81-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 1344-81-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 283090 for CAS 1344-81-6. Reporting year: 2024. https://usatrade.census.gov/