Flag of the United StatesAmerican Chemical Independence

potassium tartrate

Drug ingredient

CAS 921-53-9

This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.

Molecular structure of 921-53-9
2 K⁺
US productionNot reported
Import value, 2024$12M
Top sourceSpain 64%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

Why supply is unknown

Production is reported production, not a complete census of factories. 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

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
1 FDA-registered drug labeler
Hahnemann Laboratories, INC.

Why It Matters

Sectors
Health
Downstream Uses

Appears in 1 drug and cosmetic product listings (FDA).

  • •Kali Tartaricum
FDA Shortage Status
No FDA shortage records

Chemical Identity

CAS921-53-9
PubChem CID8984
DTXSIDDTXSID90889442
FormulaC4H4K2O6
Mol. Weight226.27 g/mol
SMILESC(C(C(=O)[O-])O)(C(=O)[O-])O.[K+].[K+]

Data Sources

← Back to Dashboard← Back to Health

Brief citations

potassium tartrate (CAS 921-53-9) https://chemicalindependence.com/chemical/921-53-9/ PubChem: 8984. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/8984 EPA TSCA Inventory: CAS 921-53-9. Retrieved 2026-04-24. https://www.epa.gov/tsca-inventory FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 291813 for CAS 921-53-9. Reporting year: 2024. https://usatrade.census.gov/