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Sodium (2-pyridylthio)-N-oxide

CAS 3811-73-2

2-Pyridinethiol, 1-oxide, sodium salt (1:1)

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

Molecular structure of 3811-73-2
1 Na⁺
US productionCBI
Import value, 2024$1.3B
Top sourceChina 32%

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 293339 · basket

EPA reports by year
2023
US production Confidential · Imports Confidential

These shares come from HS customs code 293339, which covers 397 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 32%ChinaIN 15%IndiaDE 10%GermanyBE 9%BelgiumCH 8%Switzerland

Why It Matters

Sectors
Agriculture
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

  • •Soil amendments (fertilizers) in Pesticide, Fertilizer, and Other Agricultural Chemical ManufacturingNot Known or Reasonably Ascertainable

Chemical Identity

CAS3811-73-2
PubChem CIDNot recorded
DTXSIDDTXSID3042390
FormulaC5H4NNaOS
Mol. Weight149.14 g/mol
SMILES[Na+].[O-][N+]1=C([S-])C=CC=C1

Data Sources

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Brief citations

Sodium (2-pyridylthio)-N-oxide (CAS 3811-73-2) https://chemicalindependence.com/chemical/3811-73-2/ EPA TSCA Inventory: CAS 3811-73-2. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 3811-73-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 3811-73-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293339 for CAS 3811-73-2. Reporting year: 2024. https://usatrade.census.gov/