EPA TRI Chemical
Pyridine
CAS Number: 110-86-1
- Total releases
- 2.3M lbs
- Number of facilities
- 72
- Carcinogen
- Yes
- PBT substance
- No
According to the EPA Toxics Release Inventory, Pyridine (CAS 110-86-1) is disclosed by 72 Form R facilities totaling 2.3M lbs of reported releases. The TRI extract marks this chemical with a carcinogen classification flag. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.
Pyridine (CAS 110-86-1) 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.
The carcinogen flag above reflects an assessment from EPA, the International Agency for Research on Cancer, or the National Toxicology Program, not a TRI-specific determination. The largest individual disclosure in the current dataset comes from CORNERSTONE CHEMICAL CO LLC in LA at 736.4K 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.
LAND pathway mix
Pyridine: how the 2.3M lbs splits
2.3M lbs across all reported pathways
- Land Disposal2.0M lbs87.4%
- Off-site Transfers151.6K lbs6.5%
- Air Releases142.6K lbs6.1%
- Water Discharges286 lbs<0.1%
Pyridine's 2.3M lbs Form-R total is LAND, with land disposal making up 87.4% of the bar. Next segment: off-site transfers at 6.5%.
Trend & Where It's Reported
Between 2019 and 2023, cumulative annual Pyridine releases across all reporting facilities decreased by 18% (468.8K lbs → 386.1K lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.
Reporting for Pyridine is concentrated: Texas accounts for 33.5% of the reported total (11 facilities). Next: Louisiana.
- Texas 784.8K lbs
- Louisiana 736.4K lbs
- Ohio 519.4K lbs
- Indiana 157.2K lbs
- Michigan 95.4K lbs
Reporting for Pyridine is highly concentrated by industry: Chemicals facilities account for 95.1% of the reported total (42 facilities). Next: Primary Metals.
- Chemicals 2.2M lbs
- Primary Metals 57.9K lbs
- Hazardous Waste 25.8K lbs
- Chemical Wholesalers 25.1K lbs
- Nonmetallic Mineral Product 4.1K lbs
Which facilities release the most of this chemical?
Facilities with the largest reported releases of Pyridine. Up to 50 shown.
Frequently Asked Questions
What is Pyridine in the EPA TRI? ▼
How much Pyridine is disclosed in U.S. TRI filings? ▼
How does EPA TRI classify Pyridine? ▼
Which facilities disclose the most Pyridine? ▼
What is the CAS number for Pyridine? ▼
Health Information
Carcinogen Classification: This chemical is classified as a known or suspected carcinogen by the EPA under the Toxic Release Inventory program. This classification is based on evaluations by agencies including the International Agency for Research on Cancer (IARC), the National Toxicology Program (NTP), and the EPA itself.
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.