PlainEnviro

EPA TRI Chemical

M-Xylene

CAS Number: 108-38-3

Total releases
1.0M lbs
Number of facilities
70
Carcinogen
No
PBT substance
No
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According to the EPA Toxics Release Inventory, M-Xylene (CAS 108-38-3) is disclosed by 70 Form R facilities totaling 1.0M lbs of reported releases. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.

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M-Xylene (CAS 108-38-3) 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.

A carcinogen flag, when present on other chemicals in this database, reflects an assessment from EPA, IARC, or the National Toxicology Program rather than a TRI-specific determination. The largest individual disclosure in the current dataset comes from INDORAMA VENTURES in AL at 479.9K 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.

AIR pathway mix

M-Xylene: how the 1.0M lbs splits

1.0M lbs across all reported pathways

  • Air Releases926.9K lbs91.1%
  • Off-site Transfers89.4K lbs8.8%
  • Water Discharges712 lbs0.1%
  • Land Disposal160 lbs<0.1%

M-Xylene's 1.0M lbs Form-R total is AIR, with air releases making up 91.1% of the bar. Next segment: off-site transfers at 8.8%.

Trend & Where It's Reported

Reported Release Trend

Between 2019 and 2023, cumulative annual M-Xylene releases across all reporting facilities increased by 11% (202.6K lbs → 224.8K lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for M-Xylene is concentrated: Alabama accounts for 47.3% of the reported total (2 facilities). Next: Texas.

  • Alabama 480.9K lbs
  • Texas 305.3K lbs
  • Mississippi 115.1K lbs
  • Tennessee 64.2K lbs
  • Nebraska 15.3K lbs
Industry Sources

Reporting for M-Xylene is highly concentrated by industry: Chemicals facilities account for 71.8% of the reported total (14 facilities). Next: Petroleum.

  • Chemicals 730.7K lbs
  • Petroleum 170.5K lbs
  • Natural Gas Processing 76.3K lbs
  • Transportation Equipment 23.6K lbs
  • Petroleum Bulk Terminals 6.5K lbs

Which facilities release the most of this chemical?

Facilities with the largest reported releases of M-Xylene. Up to 50 shown.

# Facility Release (lbs)
1 Indorama Ventures
479.9K lbs
2 Bp Amoco Chemical Company
145.3K lbs
3 Chevron Products Co Pascagoula Refinery
115.1K lbs
4 Rohm & Haas Chemicals LLC - Knoxville Site
64.2K lbs
5 Flint Hills Resources Corpus Christi LLC - West Plant
26.8K lbs
6 Philllips 66 Co Borger Refinery
19.9K lbs
7 Kawasaki Motors Manufacturing Corp USA
15.3K lbs
8 Ineos Joliet LLC
13.8K lbs
9 Eog Resources Inc Titan Hub
11.5K lbs
10 Eog Resources Inc Smiley Hub
11.5K lbs
11 Eog Resources Inc Lyssy Hub
11.5K lbs
12 Eog Resources Inc Shiner Hub
11.3K lbs
13 Eog Resources Inc. Milton Hub
11.3K lbs
14 Eog Resources Inc. T. R. Marshall Hub
11.3K lbs
15 Ortho-Clinical Diagnostics Building 313
11.1K lbs
16 Gb Biosciences LLC
10.8K lbs
17 Seatrium Amfels Inc.
7.9K lbs
18 Formosa Plastics Corp Texas
6.2K lbs
19 Totalenergies Petrochemicals & Refining USA Inc-Port Arthur
3.9K lbs
20 Allied Aviation Fueling Co of Houston Inc.
3.5K lbs
21 Sunoco Euless Tx Terminal
2.6K lbs
22 Etc Northeast Fld Svc Llc/pike Comp Sta
2.4K lbs
23 Palmer Manufacturing & Tank Inc.
2.4K lbs
24 Spectrum Metal Finishing
2.4K lbs
25 Buckeye Texas Processing Llc-Corpus Christi
2.2K lbs
26 Yoakum Cryogenic Plant
1.8K lbs
27 Armstrong Gas Plant
1.5K lbs
28 Puget Sound Coatings
1.5K lbs
29 Phillips 66 Co Sweeny Refinery Complex
1.2K lbs
30 Flint Hills Resources Corpus Christi LLC - East Plant
1.1K lbs
31 Protech Powder Coatings Inc
1.1K lbs
32 Signature Custom Cabinetry
1.0K lbs
33 Pecan Pipeline (wyoming) Jewell Gas Plant
1.0K lbs
34 Hyundai Power Transformers USA
1.0K lbs
35 Trident Gas Plant
918 lbs
36 Veolia N.a. Inc.
780 lbs
37 Pecan Pipeline Co Kripple Kreek Gas Plant
770 lbs
38 Commonwealth Rolled Products Inc
593 lbs
39 Flame Control Coatings,llc
537 lbs
40 Houston Central Gas Plant
505 lbs
41 South Florida Materials Corp DBA Vecenergy-Port Everglades
364 lbs
42 Martin Operating Ptnr LP
338 lbs
43 Kendrick Plastics
285 lbs
44 Univar Solutions USA
86 lbs
45 McGinnis Inc.
70 lbs
46 Coopers Creek Chemical Corp
68 lbs
47 Taylor-Leiker Gas Plant
54 lbs
48 Newberry Gas Plant
50 lbs
49 San Martin Plant
21 lbs
50 Veolia Es Technical Solutions LLC Port Arthur Facility
9 lbs

Frequently Asked Questions

What is M-Xylene in the EPA TRI? ▼
M-Xylene (CAS Number: 108-38-3) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. It is not marked as a carcinogen in the TRI classification set. 70 facilities in the United States report releasing this chemical to the EPA.
How much M-Xylene is disclosed in U.S. TRI filings? ▼
U.S. facilities have reported a total of 1.0M lbs of M-Xylene releases to the EPA Toxic Release Inventory across 70 facilities. Release quantities are self-reported estimates covering air, water, land, and off-site transfers. They are disclosure totals, not toxicity-weighted harm scores.
How does EPA TRI classify M-Xylene? ▼
M-Xylene is not marked as a carcinogen in the TRI classification set. TRI classification flags document inventory listing status; they are not a site-specific exposure or health diagnosis. For health-effect summaries see EPA IRIS and ATSDR toxicological profiles.
Which facilities disclose the most M-Xylene? ▼
Indorama Ventures in AL reports the largest disclosed release of M-Xylene in this dataset, at 479.9K lbs. Most reporting facilities for this chemical fall under chemicals. Release data is self-reported annually to the EPA under the TRI program. View the full list of 70 facilities on this page.
What is the CAS number for M-Xylene? ▼
The CAS (Chemical Abstracts Service) Registry Number for M-Xylene is 108-38-3. 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

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.