♦ Carcinogen

4,4'-Diaminodiphenyl ether

CAS # 101-80-4

26,310 lbs total reported releases across all facilities and years.

Facilities listed below reported releases of this chemical to the EPA Toxic Release Inventory (TRI). Quantities are self-reported annual totals in pounds, broken out by release pathway. Click any facility name for its full compliance profile.

National Release Trend (2015–2024) -82% overall

Year	Total Released (lbs)	Reporting Facilities	vs Prior Year
2015	3,988	5	—
2016	6,197	5	+55%
2017	3,961	5	-36%
2018	3,785	6	-4%
2019	3,272	4	-14%
2020	3,188	5	-3%
2021	659	5	-79%
2022	259	5	-61%
2023	279	5	+8%
2024	723	5	+159%

Top Releasing Industries

Industry Sector	Total Released (lbs)	Facilities
Manufacturing	26,306	6
Administrative and Support and Waste Management	4	1

Facility	Location	Year	Total (lbs)	Air	Water
KANEKA NORTH AMERICA LLC	PASADENA, TX	2024	—	—	—
ESSEX FURUKAWA MAGNET WIRE USA LLC	FORT WAYNE, IN	2024	—	—	—
DUPONT SPECIALTY PRODUCTS - CIRCLEVILLE	CIRCLEVILLE, OH	2024	719	21	698
SYENSQO SPECIALTY POLYMERS USA, LLC	GREENVILLE, SC	2024	4	4	—
I.S.T. (USA) CORP.	PARLIN, NJ	2024	0	0	—
KANEKA NORTH AMERICA LLC	PASADENA, TX	2023	—	—	—
ESSEX FURUKAWA MAGNET WIRE USA LLC	FORT WAYNE, IN	2023	—	—	—
DUPONT SPECIALTY PRODUCTS - CIRCLEVILLE	CIRCLEVILLE, OH	2023	275	25	250
SYENSQO SPECIALTY POLYMERS USA, LLC	GREENVILLE, SC	2023	3	3	—
I.S.T. (USA) CORP.	PARLIN, NJ	2023	0	0	—
KANEKA NORTH AMERICA LLC	PASADENA, TX	2022	—	—	—
ESSEX FURUKAWA MAGNET WIRE USA LLC	FORT WAYNE, IN	2022	—	—	—
DUPONT SPECIALTY PRODUCTS - CIRCLEVILLE	CIRCLEVILLE, OH	2022	255	5	250
SYENSQO SPECIALTY POLYMERS USA, LLC	GREENVILLE, SC	2022	3	3	—
I.S.T. (USA) CORP.	PARLIN, NJ	2022	0	0	—
ESSEX FURUKAWA MAGNET WIRE USA LLC	FORT WAYNE, IN	2021	—	—	—
KANEKA NORTH AMERICA LLC	PASADENA, TX	2021	—	—	—
DUPONT SPECIALTY PRODUCTS - CIRCLEVILLE	CIRCLEVILLE, OH	2021	654	250	404
SYENSQO SPECIALTY POLYMERS USA, LLC	GREENVILLE, SC	2021	5	5	—
I.S.T. (USA) CORP.	PARLIN, NJ	2021	0	0	—
ESSEX FURUKAWA MAGNET WIRE USA LLC	FORT WAYNE, IN	2020	—	—	—
KANEKA NORTH AMERICA LLC	PASADENA, TX	2020	—	—	—
DUPONT SPECIALTY PRODUCTS - CIRCLEVILLE	CIRCLEVILLE, OH	2020	3,186	2,893	293
SYENSQO SPECIALTY POLYMERS USA, LLC	GREENVILLE, SC	2020	2	2	—
I.S.T. (USA) CORP.	PARLIN, NJ	2020	0	0	—
ESSEX FURUKAWA MAGNET WIRE USA LLC	FORT WAYNE, IN	2019	—	—	—
DUPONT SPECIALTY PRODUCTS - CIRCLEVILLE	CIRCLEVILLE, OH	2019	3,269	2,977	292
SYENSQO SPECIALTY POLYMERS USA, LLC	GREENVILLE, SC	2019	3	3	—
I.S.T. (USA) CORP.	PARLIN, NJ	2019	0	0	—
HERAEUS EPURIO LLC	VANDALIA, OH	2018	—	—	—
ESSEX FURUKAWA MAGNET WIRE USA LLC	FORT WAYNE, IN	2018	—	—	—
DUPONT SPECIALTY PRODUCTS - CIRCLEVILLE	CIRCLEVILLE, OH	2018	3,779	3,309	470
SYENSQO SPECIALTY POLYMERS USA, LLC	GREENVILLE, SC	2018	4	4	—
ROSS INCINERATION SERVICES (GRAFTON, OH)	GRAFTON, OH	2018	1	1	—
KANEKA NORTH AMERICA LLC	PASADENA, TX	2018	1	1	—
ESSEX FURUKAWA MAGNET WIRE USA LLC	FORT WAYNE, IN	2017	—	—	—
DUPONT SPECIALTY PRODUCTS - CIRCLEVILLE	CIRCLEVILLE, OH	2017	3,954	3,444	510
ROSS INCINERATION SERVICES (GRAFTON, OH)	GRAFTON, OH	2017	3	3	—
SYENSQO SPECIALTY POLYMERS USA, LLC	GREENVILLE, SC	2017	3	3	—
KANEKA NORTH AMERICA LLC	PASADENA, TX	2017	1	1	—
ESSEX FURUKAWA MAGNET WIRE USA LLC	FORT WAYNE, IN	2016	—	—	—
HERAEUS EPURIO LLC	VANDALIA, OH	2016	—	—	—
DUPONT SPECIALTY PRODUCTS - CIRCLEVILLE	CIRCLEVILLE, OH	2016	6,192	5,828	364
SYENSQO SPECIALTY POLYMERS USA, LLC	GREENVILLE, SC	2016	4	4	—
KANEKA NORTH AMERICA LLC	PASADENA, TX	2016	1	1	—
ESSEX FURUKAWA MAGNET WIRE USA LLC	FORT WAYNE, IN	2015	—	—	—
HERAEUS EPURIO LLC	VANDALIA, OH	2015	—	—	—
DUPONT SPECIALTY PRODUCTS - CIRCLEVILLE	CIRCLEVILLE, OH	2015	3,984	3,599	385
SYENSQO SPECIALTY POLYMERS USA, LLC	GREENVILLE, SC	2015	3	3	—
KANEKA NORTH AMERICA LLC	PASADENA, TX	2015	1	1	—