2,4-Dichloro-6-hydroxy-s-triazine sodium salt)

CAS 2736-18-7

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

Molecular structure of 2736-18-7 — 1 Na⁺

US productionCBI

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

Import value, 2024$309M

Top sourceChina 40%

At least one company claimed its 2019 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: 2019. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 293369 · basket

EPA reports by year

2023: US production Not published · Imports Not published
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 293369, which covers 192 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 40%ChinaJP 19%JapanIN 15%IndiaES 11%SpainDE 5%Germany

Canada
Austria
United Kingdom
Netherlands
United Arab Emirates
Malaysia
Indonesia
Turkey
Belgium
Ukraine
Hungary
Latvia
Russia
Hong Kong

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.

Fujifilm Holdings Japan · JP Japan

Alzchem

Fujifilm Holdings America

Why It Matters

Sectors

Consumer Products

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 1 sector as 2 functional roles.

•Intermediate in Photographic Film, Paper, Plate, and Chemical Manufacturing (100%)Processing as a reactant
•Hardener in Photographic Film, Paper, Plate, and Chemical Manufacturing (100%)Processing—incorporation into article

Chemical Identity

CAS2736-18-7

PubChem CID23671635

DTXSIDDTXSID00890564

FormulaC3Cl2N3NaO

Mol. Weight187.94 g/mol

SMILESC1(=NC(=NC(=N1)Cl)Cl)[O-].[Na+]

Data Sources

EPA CompTox (DSSTox) · DTXSID00890564Retrieved 2026-04-06
PubChem · compound 23671635Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

2,4-Dichloro-6-hydroxy-s-triazine sodium salt) (CAS 2736-18-7) https://chemicalindependence.com/chemical/2736-18-7/ EPA CompTox (DSSTox): DTXSID00890564. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID00890564 PubChem: 23671635. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/23671635 EPA Chemical Data Reporting: 2736-18-7. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 2736-18-7. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293369 for CAS 2736-18-7. Reporting year: 2024. https://usatrade.census.gov/