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EPA TRI Chemical

Isobutyraldehyde

CAS Number: 78-84-2

Total releases
1.4M lbs
Number of facilities
22
Carcinogen
No
PBT substance
No
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According to the EPA Toxics Release Inventory, Isobutyraldehyde (CAS 78-84-2) is disclosed by 22 Form R facilities totaling 1.4M lbs of reported releases. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.

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Isobutyraldehyde (CAS 78-84-2) 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 501.0K 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

Isobutyraldehyde: how the 1.4M lbs splits

1.4M lbs across all reported pathways

  • Land Disposal501.6K lbs35.2%
  • Air Releases471.1K lbs33.1%
  • Off-site Transfers450.8K lbs31.6%
  • Water Discharges1.1K lbs0.1%

Isobutyraldehyde's 1.4M lbs Form-R total is MIXED, with land disposal making up 35.2% of the bar. Next segment: air releases at 33.1%.

Trend & Where It's Reported

Reported Release Trend

Between 2019 and 2023, cumulative annual Isobutyraldehyde releases across all reporting facilities increased by 287% (97.2K lbs → 376.6K lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for Isobutyraldehyde is highly concentrated: Texas accounts for 89.0% of the reported total (13 facilities). Next: Nebraska.

  • Texas 1.3M lbs
  • Nebraska 109.5K lbs
  • Missouri 21.9K lbs
  • South Carolina 13.4K lbs
  • Tennessee 9.9K lbs
Industry Sources

Reporting for Isobutyraldehyde is highly concentrated by industry: Chemicals facilities account for 56.9% of the reported total (13 facilities). Next: Hazardous Waste.

  • Chemicals 810.9K lbs
  • Hazardous Waste 504.1K lbs
  • Food 109.4K lbs
  • Nonmetallic Mineral Product 49 lbs

Which facilities release the most of this chemical?

Facilities with the largest reported releases of Isobutyraldehyde. Up to 50 shown.

# Facility Release (lbs)
1 Tm Deer Park Services LP
501.0K lbs
2 Monument Chemical Houston LLC
447.0K lbs
3 Eastman Chemical Co Texas Operations
263.6K lbs
4 Cargill Corn Milling North America
109.4K lbs
5 Arnette Polymers LLC
21.9K lbs
6 Basf Corp Pasadena Plant
21.7K lbs
7 Oxea Corp Bay City Plant
20.5K lbs
8 Symrise Inc
13.4K lbs
9 Eastman Chemical Co Tennessee Operations
9.9K lbs
10 Basf Corp - Freeport Site
6.7K lbs
11 Union Carbide Corp Texas City Plant
4.3K lbs
12 Clean Harbors San Leon Inc
1.7K lbs
13 Valicor Environmental Services LLC
1.3K lbs
14 St Charles Operations (taft/star) Union Carbide Corp
755 lbs
15 Texmark Chemicals Inc
741 lbs
16 Celanese Ltd Bay City Plant
455 lbs
17 Clean Harbors Environmental Services Inc
90 lbs
18 Buzzi Unicem Usa-Cape Girardeau
37 lbs
19 Holcim (us) Inc Holly Hill Plant
12 lbs
20 Lyondell Chemical Co
4 lbs
21 Clean Harbors Deer Park LLC
0 lbs
22 Arcwood Environmental - Orange LLC
0 lbs
23 Pflaumer Brothers Inc
0 lbs

Frequently Asked Questions

What is Isobutyraldehyde in the EPA TRI? ▼
Isobutyraldehyde (CAS Number: 78-84-2) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. It is not marked as a carcinogen in the TRI classification set. 22 facilities in the United States report releasing this chemical to the EPA.
How much Isobutyraldehyde is disclosed in U.S. TRI filings? ▼
U.S. facilities have reported a total of 1.4M lbs of Isobutyraldehyde releases to the EPA Toxic Release Inventory across 22 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 Isobutyraldehyde? ▼
Isobutyraldehyde 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 Isobutyraldehyde? ▼
Tm Deer Park Services LP in TX reports the largest disclosed release of Isobutyraldehyde in this dataset, at 501.0K 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 22 facilities on this page.
What is the CAS number for Isobutyraldehyde? ▼
The CAS (Chemical Abstracts Service) Registry Number for Isobutyraldehyde is 78-84-2. 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.