Flag of the United StatesAmerican Chemical Independence

Potassium sodium tartrate

CAS 304-59-6

Butanedioic acid, 2,3-dihydroxy- (2R,3R)-, potassium sodium salt (1:1:1)

Used in 2 industrial sectors tracked by the EPA.

Molecular structure of 304-59-6
1 K⁺ · 1 Na⁺
US production19.7K lb
Import value, 2024$12M
Import volumeCBI
Top sourceSpain 64%

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. 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 291813 · basket

EPA reports by year
2023
US production 19.7K lb · Imports Confidential

These shares come from HS customs code 291813, which covers 21 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
ES 64%SpainMY 14%MalaysiaBE 9%BelgiumCL 4%ChileIT 3%Italy
EPA-registered manufacturers (1)
Macdermid

Why It Matters

Sectors
ElectronicsCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 2 sectors as 1 functional role.

  • •Plating agent in Computer and Electronic Product ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Plating agent in All Other Chemical Product and Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS304-59-6
PubChem CIDNot recorded
DTXSIDDTXSID90889341
FormulaC4H4KNaO6
Mol. Weight210.158 g/mol
SMILES[Na+].[K+].O[C@H]([C@@H](O)C([O-])=O)C([O-])=O

Data Sources

← Back to Dashboard← Back to Electronics

Brief citations

Potassium sodium tartrate (CAS 304-59-6) https://chemicalindependence.com/chemical/304-59-6/ EPA TSCA Inventory: CAS 304-59-6. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 304-59-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 304-59-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291813 for CAS 304-59-6. Reporting year: 2024. https://usatrade.census.gov/