Eosin
CAS 17372-87-1
Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 2',4',5',7'-tetrabromo-3',6'-dihydroxy-, sodium salt (1:2)
EPA and Census publish no US supply data for this chemical.
EPA lists this chemical for 2023 but publishes zero or no volume for both production and imports.
Why supply is unknownWhere It Comes From
EPA and Census publish no US supply data for this chemical.
- 2023
- US production Not published · Imports Not published
Why It Matters
No EPA sector or FDA product records name a use for this chemical.
Vendor Pricing
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
18 more vendors
| Vendor | Country Supplier country. Where available, shows shipping origin. When the supplier ships from a different country than where they are registered, both are shown. Most suppliers show registration country only. | $/g | Pack | Purity |
|---|---|---|---|---|
| Angene Chemical | China → Hong Kong | $0.15 | 100 g | 85% |
| Apollo Scientific UK | United Kingdom | $0.17 | 1 kg | 97% |
| BLD Pharmatech Ltd. | China | $0.26 | 500 g | 85% |
| Ambeed, Inc. | United States | $0.28 | 500 g | 85% |
| A2B Chem LLC | United States | $0.30 | 100 g | 85% |
| AA BLOCKS | United States | $0.34 | 100 g | 85% |
| Combi-Blocks, Inc. | United States | $0.36 | 500 g | 88% |
| BLD Pharmatech GmbH | Germany | $0.37 | 100 g | 85% |
| BLD Pharmatech Co., Limited | United States | $0.42 | 100 g | 85% |
| AstaTech, Inc | United States | $0.49 | 100 g | 95% |
| Sigma-Aldrich (Rush Stock) | Germany | $0.84 | 250 g | — |
| Sigma-Aldrich | Germany | $0.84 | 250 g | — |
| AK Scientific Specialized | United States | $2.44 | 25 g | 90% |
| AK Scientific, Inc. | United States | $3.36 | 25 g | 90% |
| TargetMol Chemicals | China → United States | $82.00 | 1 g | 89.01% |
| Labotest KG | Germany | $217.80 | 5000 mg | 90% |
| Apexbio Technology LLC | United States | $500.00 | 100 mg | 98% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 85% |
Chemical Identity
Data Sources
- EPA TSCA InventoryRetrieved 2026-04-29
- EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
Brief citations
Eosin (CAS 17372-87-1) https://chemicalindependence.com/chemical/17372-87-1/ EPA TSCA Inventory: CAS 17372-87-1. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 17372-87-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting