EPA TRI Chemical
N-Methyl-2-Pyrrolidone
CAS Number: 872-50-4
- Total releases
- 56.0M lbs
- Number of facilities
- 511
- Carcinogen
- No
- PBT substance
- No
According to the EPA Toxics Release Inventory, N-Methyl-2-Pyrrolidone (CAS 872-50-4) is disclosed by 511 Form R facilities totaling 56.0M lbs of reported releases. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.
N-Methyl-2-Pyrrolidone (CAS 872-50-4) 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.
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 TM DEER PARK SERVICES LP in TX at 10.6M 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.
MIXED pathway mix
N-Methyl-2-Pyrrolidone: how the 56.0M lbs splits
56.0M lbs across all reported pathways
- Off-site Transfers28.5M lbs50.8%
- Land Disposal20.4M lbs36.4%
- Air Releases7.1M lbs12.6%
- Water Discharges36.6K lbs0.1%
N-Methyl-2-Pyrrolidone's 56.0M lbs Form-R total is MIXED, with off-site transfers making up 50.8% of the bar. Next segment: land disposal at 36.4%.
Trend & Where It's Reported
Between 2019 and 2023, cumulative annual N-Methyl-2-Pyrrolidone releases across all reporting facilities increased by 11% (10.2M lbs → 11.4M lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.
Reporting for N-Methyl-2-Pyrrolidone is concentrated: Texas accounts for 36.8% of the reported total (52 facilities). Next: North Carolina.
- Texas 20.6M lbs
- North Carolina 11.2M lbs
- Louisiana 5.0M lbs
- Alabama 4.1M lbs
- Virginia 2.8M lbs
Reporting for N-Methyl-2-Pyrrolidone is highly concentrated by industry: Chemicals facilities account for 50.1% of the reported total (218 facilities). Next: Hazardous Waste.
- Chemicals 28.1M lbs
- Hazardous Waste 12.6M lbs
- Miscellaneous Manufacturing 4.6M lbs
- Electrical Equipment 2.5M lbs
- Transportation Equipment 1.9M lbs
Which facilities release the most of this chemical?
Facilities with the largest reported releases of N-Methyl-2-Pyrrolidone. Up to 50 shown.
Frequently Asked Questions
What is N-Methyl-2-Pyrrolidone in the EPA TRI? ▼
How much N-Methyl-2-Pyrrolidone is disclosed in U.S. TRI filings? ▼
How does EPA TRI classify N-Methyl-2-Pyrrolidone? ▼
Which facilities disclose the most N-Methyl-2-Pyrrolidone? ▼
What is the CAS number for N-Methyl-2-Pyrrolidone? ▼
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.
Related
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.