EPA TRI Chemical
Carbonyl Sulfide
CAS Number: 463-58-1
- Total releases
- 54.7M lbs
- Number of facilities
- 135
- Carcinogen
- No
- PBT substance
- No
According to the EPA Toxics Release Inventory, Carbonyl Sulfide (CAS 463-58-1) is disclosed by 135 Form R facilities totaling 54.7M lbs of reported releases. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.
Carbonyl Sulfide (CAS 463-58-1) 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.
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 INEOS PIGMENTS USA INC in OH at 16.3M 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
Carbonyl Sulfide: how the 54.7M lbs splits
54.7M lbs across all reported pathways
- Air Releases54.1M lbs98.8%
- Off-site Transfers647.4K lbs1.2%
- Land Disposal11.4K lbs<0.1%
- Water Discharges1.5K lbs<0.1%
Carbonyl Sulfide's 54.7M lbs Form-R total is AIR, with air releases making up 98.8% of the bar. Next segment: off-site transfers at 1.2%.
Trend & Where It's Reported
Between 2019 and 2023, cumulative annual Carbonyl Sulfide releases across all reporting facilities decreased by 26% (12.3M lbs → 9.1M lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.
Reporting for Carbonyl Sulfide is concentrated: Ohio accounts for 40.0% of the reported total (7 facilities). Next: Tennessee.
- Ohio 21.9M lbs
- Tennessee 12.9M lbs
- Mississippi 3.6M lbs
- Indiana 3.2M lbs
- Kentucky 3.1M lbs
Reporting for Carbonyl Sulfide is highly concentrated by industry: Chemicals facilities account for 72.8% of the reported total (35 facilities). Next: Primary Metals.
- Chemicals 39.9M lbs
- Primary Metals 12.9M lbs
- Petroleum 1.5M lbs
- Nonmetallic Mineral Product 392.1K lbs
- Natural Gas Processing 1.0K lbs
Which facilities release the most of this chemical?
Facilities with the largest reported releases of Carbonyl Sulfide. Up to 50 shown.
Frequently Asked Questions
What is Carbonyl Sulfide in the EPA TRI? ▼
How much Carbonyl Sulfide is disclosed in U.S. TRI filings? ▼
How does EPA TRI classify Carbonyl Sulfide? ▼
Which facilities disclose the most Carbonyl Sulfide? ▼
What is the CAS number for Carbonyl Sulfide? ▼
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.