Ammonium sulfite

CAS 10196-04-0

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

Molecular structure of 10196-04-0 — 2 NH₄⁺

US productionCBI

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

Import value, 2024$4M

Top sourceItaly 46%

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 283220 · basket

EPA reports by year

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

These shares come from HS customs code 283220, which covers 11 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).

IT 46%ItalyCN 33%ChinaDE 18%GermanyIN 1%IndiaNZ 1%New Zealand

Denmark
Hong Kong
Japan
Spain

EPA-registered manufacturers (10)

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

Tessenderlo Groip Nv/Sa · BE Belgium

Tessenderlo Group Nv/Sa · BE Belgium

Aurorium

East Penn Manufacturing

Ecovyst

Show all 10

Hydrite Chemical

Jupiter Sulphur

Pci Nitrogen

Tessenderlo Kerley

Tessenderlo Kerley, Inc. - Eufaula Facility

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.

Koch Industries

EPA-registered importers (3)

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

Marubeni · JP Japan

Helm America

Macrosource

Why It Matters

Sectors

AgricultureFoodEnergyMetals & MiningConsumer ProductsCore 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 8 sectors as 4 functional roles.

•Soil amendments (fertilizers) in OtherProcessing—repackaging
•Soil amendments (fertilizers) in Pesticide, Fertilizer, and Other Agricultural Chemical Manufacturing (100%)Processing—repackaging
•Reducing agent in All Other Chemical Product and Preparation Manufacturing (80%)Processing—incorporation into formulation, mixture, or reaction product
•Reducing agent in Oil and Gas Drilling, Extraction, and Support activities (15%)Processing—incorporation into formulation, mixture, or reaction product
•Reducing agent in Food, beverage, and tobacco product manufacturing (5%)Processing—incorporation into formulation, mixture, or reaction product
•Soil amendments (fertilizers) in Agriculture, Forestry, Fishing and Hunting (100%)Processing—incorporation into formulation, mixture, or reaction product
•Preservative in All Other Basic Organic Chemical Manufacturing (90%)Processing—incorporation into formulation, mixture, or reaction product
•Intermediate in Pesticide, Fertilizer, and Other Agricultural Chemical Manufacturing (100%)Processing as a reactant
•Soil amendments (fertilizers) in Wholesale and Retail Trade (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.06/gAngene Chemical

CountryChina (registered: Hong Kong)

Pack$30.00 / 500 g

Purity30%

Vendors5 available

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

4 more vendors

Vendor	Country	$/g	Pack	Purity
Aaron Chemicals LLC	Hong Kong	$0.06	500 g	30%
A2B Chem LLC (2 weeks)	United States	$0.07	500 g	30%
AA BLOCKS (2 weeks)	United States	$0.09	500 g	30%
Angene	China → Hong Kong	$4266.67	30 mg	30%

Chemical Identity

CAS10196-04-0

PubChem CID25041

DTXSIDDTXSID2064991

FormulaH8N2O3S

Mol. Weight116.14 g/mol

SMILES[NH4+].[NH4+].[O-]S(=O)[O-]

Data Sources

EPA CompTox (DSSTox) · DTXSID2064991Retrieved 2026-04-06
PubChem · compound 25041Retrieved 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

Ammonium sulfite (CAS 10196-04-0) https://chemicalindependence.com/chemical/10196-04-0/ EPA CompTox (DSSTox): DTXSID2064991. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2064991 PubChem: 25041. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/25041 EPA Chemical Data Reporting: 10196-04-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 10196-04-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 283220 for CAS 10196-04-0. Reporting year: 2024. https://usatrade.census.gov/