ST CHARLES OPERATIONS (TAFT/STAR) UNION CARBIDE CORP
Hahnville, LA · Parent: DOW INC
Quick Facts
Chemical Releases
Aggregated across all reporting years (2023–2023). Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Ethylene | 125.7K lbs | \u2014 |
| Ammonia | 89.0K lbs | \u2014 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 63.5K lbs | \u2014 |
| Propylene | 29.5K lbs | \u2014 |
| Formaldehyde | 16.5K lbs | Carcinogen |
| Acrylic acid | 15.7K lbs | \u2014 |
| Acetaldehyde | 7.8K lbs | Carcinogen |
| Methanol | 7.1K lbs | \u2014 |
| Allyl alcohol | 6.7K lbs | \u2014 |
| Ethylene oxide | 6.4K lbs | Carcinogen |
| Methyl acrylate | 5.7K lbs | Carcinogen |
| Diethanolamine | 5.1K lbs | \u2014 |
| Benzene | 4.3K lbs | Carcinogen |
| Nonylphenol | 3.9K lbs | \u2014 |
| Hydroquinone | 3.0K lbs | \u2014 |
| n-Butyl alcohol | 2.9K lbs | \u2014 |
| Zinc compounds | 2.5K lbs | \u2014 |
| Ethylene glycol | 2.5K lbs | \u2014 |
| Toluene | 2.3K lbs | \u2014 |
| 1,3-Butadiene | 2.2K lbs | Carcinogen |
| Acrolein | 2.0K lbs | Carcinogen |
| n-Hexane | 2.0K lbs | \u2014 |
| Butyraldehyde | 1.9K lbs | \u2014 |
| Xylene (mixed isomers) | 1.1K lbs | \u2014 |
| Hydrogen sulfide | 997 lbs | \u2014 |
| N-Hydroxyethylethylenediamine | 916 lbs | \u2014 |
| Ethylbenzene | 719 lbs | Carcinogen |
| Formic acid | 613 lbs | \u2014 |
| Styrene | 596 lbs | Carcinogen |
| Vanadium compounds | 584 lbs | \u2014 |
| Naphthalene | 267 lbs | Carcinogen |
| 1,2,4-Trimethylbenzene | 262 lbs | \u2014 |
| Certain glycol ethers | 182 lbs | \u2014 |
| Isobutyraldehyde | 91 lbs | \u2014 |
| Nonylphenol Ethoxylates | 86 lbs | \u2014 |
| 1,2-Dichloroethane | 70 lbs | Carcinogen |
| Propionaldehyde | 51 lbs | \u2014 |
| Biphenyl | 31 lbs | \u2014 |
| Cyclohexane | 1 lbs | \u2014 |
| Pyridine | 1 lbs | Carcinogen |
| Phthalic anhydride | 1 lbs | \u2014 |
| Molybdenum trioxide | 0 lbs | Carcinogen |
| Anthracene | 0 lbs | \u2014 |
| Isoprene | 0 lbs | Carcinogen |
| Cumene | 0 lbs | Carcinogen |
| Polycyclic aromatic compounds | 0 lbs | Carcinogen |
| Dimethyl phthalate | 0 lbs | \u2014 |
| Dicyclopentadiene | 0 lbs | \u2014 |
Location
About TRI Data
Data comes from the EPA Toxic Release Inventory (TRI) program. Facilities that manufacture, process, or otherwise use listed toxic chemicals above threshold amounts are required to report annually to the EPA.
Release quantities are self-reported by the facility and may represent estimates rather than exact measurements. "Total releases" includes releases to air, water, land, and off-site transfers for disposal. Quantities shown here are aggregated across all available reporting years.
PlainEnviro presents this data without advocacy framing. The presence of a facility in the TRI database does not by itself indicate a health risk. For site-specific health questions, consult your local environmental or health agency.