♦ Carcinogen

4,4'-Methylenedianiline

CAS # 101-77-9

1,709,858 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) -50% overall

Year	Total Released (lbs)	Reporting Facilities	vs Prior Year
2015	314,633	24	—
2016	143,176	20	-54%
2017	163,621	20	+14%
2018	222,623	20	+36%
2019	4,307	10	-98%
2020	68,606	20	+1493%
2021	248,673	18	+262%
2022	267,939	19	+8%
2023	118,250	19	-56%
2024	158,029	20	+34%

Top Releasing Industries

Industry Sector	Total Released (lbs)	Facilities
Manufacturing	1,709,320	22
Administrative and Support and Waste Management	538	9

Facility	Location	Year	Total (lbs)	Air	Water
EVONIK CORPORATION	HAYSVILLE, KS	2022	10	10	—
TUBO - FGS, L.L.C. (FIBER GLASS SYSTEMS)	LITTLE ROCK, AR	2022	10	10	—
BAYER MATERIALSCIENCE BAYTOWN	BAYTOWN, TX	2022	7	7	—
DUOLINE TECHNOLOGIES LLC	GILMER, TX	2022	2	2	—
SYENSQO SPECIALTY POLYMERS USA, LLC	GREENVILLE, SC	2022	1	1	—
CLEAN HARBORS EL DORADO LLC	EL DORADO, AR	2022	0	0	—
CLEAN HARBORS DEER PARK LLC	LA PORTE, TX	2022	0	0	—
HUNTSMAN ADVANCED MATERIALS AMERICAS INC	MC INTOSH, AL	2022	0	0	—
URETHANE SYSTEMS USA LLC	GASTONIA, NC	2021	—	—	—
NOV FIBER GLASS SYSTEMS BURKBURNETT	BURKBURNETT, TX	2021	—	—	—
BAYER MATERIALSCIENCE BAYTOWN	BAYTOWN, TX	2021	—	—	—
HUNTSMAN ADVANCED MATERIALS AMERICAS INC	MC INTOSH, AL	2021	—	—	—
ELANTAS PDG, INC.	SAINT LOUIS, MO	2021	—	—	—
RUBICON LLC - GEISMAR FACILITY	GEISMAR, LA	2021	240,015	15	—
FUTURE PIPE INDUSTRIES	HOUSTON, TX	2021	3,739	3,739	—
THE DOW CHEMICAL COMPANY TEXAS OPERATIONS	FREEPORT, TX	2021	2,579	112	2,458
BASF CORP - GEISMAR SITE	GEISMAR, LA	2021	2,210	1,340	870
INSPEC FOAMS INC	MAGNOLIA, AR	2021	100	100	—
TUBO - FGS, L.L.C. (FIBER GLASS SYSTEMS)	LITTLE ROCK, AR	2021	10	10	—
EVONIK CORPORATION	HAYSVILLE, KS	2021	10	10	—
VEOLIA ES TECHNICAL SOLUTIONS	BEAUMONT, TX	2021	5	5	—
SYENSQO SPECIALTY POLYMERS USA, LLC	GREENVILLE, SC	2021	3	3	—
DUOLINE TECHNOLOGIES LLC	GILMER, TX	2021	2	2	—
CLEAN HARBORS DEER PARK LLC	LA PORTE, TX	2021	0	0	—
CLEAN HARBORS EL DORADO LLC	EL DORADO, AR	2021	0	0	—
EVONIK CORPORATION	LOS ANGELES, CA	2021	0	0	—
URETHANE SYSTEMS USA LLC	GASTONIA, NC	2020	—	—	—
BAYER MATERIALSCIENCE BAYTOWN	BAYTOWN, TX	2020	—	—	—
STERICYCLE ENVIRONMENTAL SOLUTIONS - TACOMA FACILITY	TACOMA, WA	2020	—	—	—
ELANTAS PDG, INC.	SAINT LOUIS, MO	2020	—	—	—
EVONIK CORPORATION	LOS ANGELES, CA	2020	—	—	—
NOV FIBER GLASS SYSTEMS BURKBURNETT	BURKBURNETT, TX	2020	—	—	—
HUNTSMAN ADVANCED MATERIALS AMERICAS INC	MC INTOSH, AL	2020	—	—	—
RUBICON LLC - GEISMAR FACILITY	GEISMAR, LA	2020	61,011	11	—
FUTURE PIPE INDUSTRIES	HOUSTON, TX	2020	2,801	2,801	—
THE DOW CHEMICAL COMPANY TEXAS OPERATIONS	FREEPORT, TX	2020	2,378	35	2,335
BASF CORP - GEISMAR SITE	GEISMAR, LA	2020	2,284	1,319	965
INSPEC FOAMS INC	MAGNOLIA, AR	2020	100	100	—
TUBO - FGS, L.L.C. (FIBER GLASS SYSTEMS)	LITTLE ROCK, AR	2020	10	10	—
EVONIK CORPORATION	HAYSVILLE, KS	2020	10	10	—
VEOLIA ES TECHNICAL SOLUTIONS	BEAUMONT, TX	2020	8	8	—
DUOLINE TECHNOLOGIES LLC	GILMER, TX	2020	2	2	—
SYENSQO SPECIALTY POLYMERS USA, LLC	GREENVILLE, SC	2020	2	2	—
CLEAN HARBORS EL DORADO LLC	EL DORADO, AR	2020	0	0	—
CLEAN HARBORS DEER PARK LLC	LA PORTE, TX	2020	0	0	—
ROSS INCINERATION SERVICES (GRAFTON, OH)	GRAFTON, OH	2020	0	0	—
EVONIK CORPORATION	HAYSVILLE, KS	2019	—	—	—
HUNTSMAN ADVANCED MATERIALS AMERICAS INC	MC INTOSH, AL	2019	—	—	—
ELANTAS PDG, INC.	SAINT LOUIS, MO	2019	—	—	—
THE DOW CHEMICAL COMPANY TEXAS OPERATIONS	FREEPORT, TX	2019	4,094	111	3,983