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Diphenylamine

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CAS Number: 122-39-4

Diphenylamine (CAS 122-39-4) is a chemical tracked by the EPA Toxics Release Inventory (TRI) program under Section 313 of the Emergency Planning and Community Right-to-Know Act. The TRI requires industrial facilities above specified threshold quantities to disclose annual manufacturing, processing, and otherwise-used volumes, along with quantities released to air, water, land, and off-site transfers.

Across the United States, 43 facilities have filed TRI Form R disclosures for Diphenylamine, with a cumulative reported release volume of 513.7K lbs. The chemical is not flagged as a carcinogen in the TRI classification set. The largest individual disclosure in the current dataset comes from CYTEC INDUSTRIES INC in TN at 204.8K lbs.

TRI volumes are self-reported estimates, not measured stack emissions, and each pound counts equally regardless of chemical toxicity, so total pounds should not be equated with total risk. Inclusion of a chemical or facility in the TRI does not itself establish a health hazard; it documents the public right-to-know record. Consult EPA's IRIS (Integrated Risk Information System) and the Agency for Toxic Substances and Disease Registry for health-effect summaries.

Release Summary

Total Releases
513.7K lbs
Number of Facilities
43
Carcinogen
No
Persistent Bioaccumulative Toxicant
No

Which facilities release the most of this chemical?

Facilities with the largest reported releases of Diphenylamine. Up to 50 shown.

# Facility Release (lbs)
1 Cytec Industries Inc 204.8K lbs
2 Lubrizol Corp Bayport Facility 179.7K lbs
3 Rubicon LLC 66.0K lbs
4 Parker Hannifin Corp. Inc. 18.1K lbs
5 US Army Fort Stewart (part) 11.6K lbs
6 Parker Hannifin Manhattan Facility 8.6K lbs
7 St. Marks Powder Inc. 5.3K lbs
8 First Chemical Corp 5.1K lbs
9 Chevron Oronite Co LLC - Oak Point Plant 4.3K lbs
10 Goodyear Tire & Rubber Co 3.8K lbs
11 Keystone Cement Co 2.0K lbs
12 Northrop Grumman Systems Corp (new River Energetics) 1.6K lbs
13 Pace International LLC 1.1K lbs
14 The Goodyear Tire & Rubber Co Bayport Chemical Plant 487 lbs
15 Dupont Pontchartrain Works 421 lbs
16 Mwc Michigan Llc. 260 lbs
17 Emerald Performance Materials LLC 243 lbs
18 Ebv Explosives Environmental Co 75 lbs
19 Afton Chemical Corp 75 lbs
20 Buzzi Unicem Usa-Cape Girardeau 53 lbs
21 Centauri Technologies LLC 45 lbs
22 Lnva-North Regional Treatment Plant 39 lbs
23 Veolia Es Technical Solutions LLC Port Arthur Facility 10 lbs
24 Clean Harbors Deer Park LLC 10 lbs
25 Exxonmobil Oil Beaumont Refinery (part) 3 lbs
26 Dow Chemical Co Freeport Facility 1 lbs
27 Clean Harbors el Dorado LLC 1 lbs
28 Ross Incineration Services Inc 0 lbs
29 U.S. Army Tooele Army Depot 0 lbs
30 Coast Southwest Inc 0 lbs
31 Decco US Postharvest Inc 0 lbs
32 U.S. Tooele Army Depot South 0 lbs
33 Federal Cartridge Co-Cci 0 lbs
34 Third Coast Terminals Pearland 0 lbs
35 Delta Deer Park 0 lbs
36 Covestro LLC 0 lbs
37 Blentech Corp 0 lbs
38 General Dynamics Ordnance & Tactical Systems Inc I Area 0 lbs
39 Continental Tire the Americas LLC 0 lbs
40 Basin Electric Antelope Valley Station 0 lbs
41 Inchem Corp 0 lbs
42 Orient Corp of America 0 lbs
43 US Army Picatinny Arsenal 0 lbs

Frequently Asked Questions

What is Diphenylamine? ▼
Diphenylamine (CAS Number: 122-39-4) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. 43 facilities in the United States report releasing this chemical to the EPA.
How much Diphenylamine is released in the U.S.? ▼
U.S. facilities have reported a total of 513.7K lbs of Diphenylamine releases to the EPA Toxic Release Inventory across 43 facilities. Release quantities are self-reported estimates. This includes releases to air, water, land, and off-site transfers.
Is Diphenylamine harmful to health? ▼
Diphenylamine is not classified as a carcinogen in the EPA TRI database. Health effects depend on exposure levels, duration, and route. For specific health questions, consult a toxicologist or your local health agency.
Which facilities release the most Diphenylamine? ▼
The largest reported releasers of Diphenylamine include facilities across multiple states. Release data is self-reported annually to the EPA under the TRI program. View the full list of 43 facilities on this page.
What is the CAS number for Diphenylamine? ▼
The CAS (Chemical Abstracts Service) Registry Number for Diphenylamine is 122-39-4. CAS numbers are unique numerical identifiers assigned to every chemical substance described in the open scientific literature. This identifier is used to search scientific databases and regulatory filings.

Related Guides

Understanding TRI Data
How the Toxic Release Inventory works
Biggest Polluters in America
Which facilities release the most toxics
How to Check Environmental Quality
Step-by-step guide to checking your local environment

Health Information

Data comes from the EPA Toxic Release Inventory (TRI) program. Release quantities are self-reported by facilities and may represent estimates. The total shown aggregates reports across all facilities and reporting years.

PlainEnviro presents this data without advocacy framing. The presence of a chemical in the TRI database does not by itself indicate a health risk at current exposure levels. For health-related questions about specific chemical exposures, consult your local health agency or a toxicologist.

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Data sourced from the U.S. Environmental Protection Agency (EPA). See our methodology for details. Retrieved and formatted by PlainEnviro Editorial

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the EPA Toxic Release Inventory (TRI). Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.