N,N'-Diphenyl-p-phenylenediamine
CAS 74-31-7
U.S. production volumes are classified as confidential business information.
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. US production volume is confidential. 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 292151 · basket
- 2023
- US production Confidential · Imports Confidential
- 2019
- US production Confidential · Imports Confidential
These shares come from HS customs code 292151, which covers 51 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.
- United Kingdom
- Slovakia
- Argentina
- Brazil
- Poland
- Spain
- Netherlands
- Taiwan
- Japan
Why It Matters
Industrial Uses
Used in 2 sectors as 1 functional role.
- •Chemical reaction regulator in Synthetic Rubber Manufacturing (90%)Processing—incorporation into formulation, mixture, or reaction product
- •Chemical reaction regulator in Plastics Material and Resin Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product
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 |
|---|---|---|---|---|
| Aaron Chemicals LLC | Hong Kong | $0.26 | 250 g | — |
| BLD Pharmatech Ltd. | China | $0.34 | 500 g | 95% |
| A2B Chem LLC | United States | $0.43 | 100 g | 95% |
| AA BLOCKS | United States | $0.52 | 500 g | 98% |
| Cayman Europe | Estonia | $0.74 | 500 g | 98% |
| AK Scientific, Inc. | United States | $1.12 | 500 g | 98% |
| AK Scientific Specialized | United States | $1.50 | 500 g | 99% |
| AstaTech (2 weeks) | United States | $1.92 | 25 g | 97% |
| Angene International Limited | United States | $2.37 | 500 g | 99% |
| Combi-Blocks, Inc. | United States | $4.80 | 25 g | 95% |
| Sigma-Aldrich (Rush Stock) | Germany | $7.72 | 25 g | 98% |
| Sigma-Aldrich | Germany | $7.72 | 25 g | 98% |
| MedKoo Biosciences, Inc | United States | $15.20 | 25 g | 98% |
| MedChemExpress MCE | Sweden | $31.46 | 1 g | 98.02% |
| Key Organics Ltd. | United Kingdom | $740.00 | 100 mg | 95% |
| Molnova | China | $1284.00 | 500 mg | 99% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 98% |
| TimTec, LLC (back-ordered) | United States | $32000.00 | 15 mg | 94% |
Chemical Identity
Data Sources
- EPA CompTox (DSSTox) · DTXSID9020538Retrieved 2026-04-06
- PubChem · compound 6319Retrieved 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
N,N'-Diphenyl-p-phenylenediamine (CAS 74-31-7) https://chemicalindependence.com/chemical/74-31-7/ EPA CompTox (DSSTox): DTXSID9020538. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9020538 PubChem: 6319. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6319 EPA Chemical Data Reporting: 74-31-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 74-31-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 292151 for CAS 74-31-7. Reporting year: 2024. https://usatrade.census.gov/