2-Naphthalenesulfonic acid, 7,7'-(carbonyldiimino)bis[4-hydroxy-, sodium salt (1:2)
CAS 20324-87-2
EPA’s 2023 records show zero U.S. production of this chemical.
At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.
Why supply is unknownProduction 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 292421 · basket
- 2023
- US production Zero · Imports Confidential
- 2019
- US production Confidential · Imports Confidential
These shares come from HS customs code 292421, which covers 26 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.
- South Korea
- Spain
- Singapore
- Ukraine
- Italy
- Poland
- Hong Kong
Why It Matters
Industrial Uses
- •Intermediate in Synthetic Dye and Pigment Manufacturing (100%)Processing as a reactant
Vendor Pricing
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
16 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 |
|---|---|---|---|---|
| AA BLOCKS | United States | $14.64 | 25 g | 99% |
| Angene International Limited | United States | $24.68 | 25 g | 98% |
| Combi-Blocks, Inc. | United States | $480.00 | 1 g | 95% |
| TargetMol Chemicals | China → United States | $586.00 | 500 mg | 99.98% |
| BLD Pharmatech Co., Limited | United States | $800.00 | 250 mg | 99% |
| BLD Pharmatech Ltd. | China | $800.00 | 250 mg | 99% |
| Ambeed, Inc. | United States | $800.00 | 250 mg | 99% |
| TargetMol Chemicals US | United States | $1180.00 | 100 mg | 99.98% |
| Molnova | China | $1292.00 | 500 mg | 99% |
| TargetMol Chemicals EU | Austria | $1360.00 | 50 mg | 99.98% |
| Aaron Chemicals LLC | Hong Kong | $1430.00 | 100 mg | 99% |
| Angene Chemical | China → Hong Kong | $1650.00 | 100 mg | 99% |
| ChemBridge Corporation | Kazakhstan | $7400.00 | 50 mg | 90% |
| AstaTech (2 weeks) | United States | $8208.00 | 250 mg | 98% |
| Apexbio Technology LLC | United States | $8640.00 | 25 mg | 99.49% |
| MedKoo Biosciences, Inc | United States | $10000.00 | 25 mg | 98% |
Chemical Identity
Data Sources
- EPA CompTox (DSSTox) · DTXSID80889678Retrieved 2026-04-06
- PubChem · compound 88489Retrieved 2026-04-06
- EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
- EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
- US Census international tradeReporting year: 2024 · Retrieved 2026-10-04
Brief citations
2-Naphthalenesulfonic acid, 7,7'-(carbonyldiimino)bis[4-hydroxy-, sodium salt (1:2) (CAS 20324-87-2) https://chemicalindependence.com/chemical/20324-87-2/ EPA CompTox (DSSTox): DTXSID80889678. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID80889678 PubChem: 88489. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/88489 EPA Chemical Data Reporting: 20324-87-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 20324-87-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 292421 for CAS 20324-87-2. Reporting year: 2024. https://usatrade.census.gov/