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Ferric subsulfate

Drug ingredient

CAS 1310-45-8

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

Molecular structure of 1310-45-8
4 Fe³⁺ · 2 OH⁻
US productionNot reported
Import value, 2024$179M
Top sourceMexico 46%

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 283329 · basket

These shares come from HS customs code 283329, which covers 36 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
MX 46%MexicoCN 19%ChinaCA 11%CanadaIN 9%IndiaFI 4%Finland
1 FDA-registered drug labeler
Premier Dental Products Company

Why It Matters

Sectors
Health
Downstream Uses

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

  • •Monsels Solution
FDA Shortage Status
No FDA shortage records

Chemical Identity

CAS1310-45-8
PubChem CID159372
DTXSIDDTXSID30893846
FormulaFe4H2O22S5
Mol. Weight737.7 g/mol
SMILES[OH-].[OH-].[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[Fe+3].[Fe+3].[Fe+3].[Fe+3]

Data Sources

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Brief citations

Ferric subsulfate (CAS 1310-45-8) https://chemicalindependence.com/chemical/1310-45-8/ PubChem: 159372. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/159372 EPA TSCA Inventory: CAS 1310-45-8. 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 283329 for CAS 1310-45-8. Reporting year: 2024. https://usatrade.census.gov/