PlainEnviro

EPA TRI Chemical

4,4'-Isopropylidenediphenol

CAS Number: 80-05-7

Total releases
13.2M lbs
Number of facilities
161
Carcinogen
No
PBT substance
No
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According to the EPA Toxics Release Inventory, 4,4'-Isopropylidenediphenol (CAS 80-05-7) is disclosed by 161 Form R facilities totaling 13.2M lbs of reported releases. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.

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4,4'-Isopropylidenediphenol (CAS 80-05-7) 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 SABIC INNOVATIVE PLASTICS MT. VERNON LLC in IN at 7.1M 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

4,4'-Isopropylidenediphenol: how the 13.2M lbs splits

13.2M lbs across all reported pathways

  • Off-site Transfers9.0M lbs68.3%
  • Land Disposal4.0M lbs29.9%
  • Air Releases227.5K lbs1.7%
  • Water Discharges8.0K lbs0.1%

4,4'-Isopropylidenediphenol's 13.2M lbs Form-R total is MIXED, with off-site transfers making up 68.3% of the bar. Next segment: land disposal at 29.9%.

Trend & Where It's Reported

Reported Release Trend

Between 2019 and 2023, cumulative annual 4,4'-Isopropylidenediphenol releases across all reporting facilities decreased by 23% (2.8M lbs → 2.2M lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for 4,4'-Isopropylidenediphenol is highly concentrated: Indiana accounts for 54.6% of the reported total (10 facilities). Next: Michigan.

  • Indiana 7.2M lbs
  • Michigan 1.8M lbs
  • California 1.3M lbs
  • Ohio 1.2M lbs
  • Texas 787.8K lbs
Industry Sources

Reporting for 4,4'-Isopropylidenediphenol is highly concentrated by industry: Chemicals facilities account for 91.6% of the reported total (105 facilities). Next: Primary Metals.

  • Chemicals 12.1M lbs
  • Primary Metals 344.2K lbs
  • Hazardous Waste 281.5K lbs
  • Transportation Equipment 236.3K lbs
  • Machinery 143.8K lbs

Which facilities release the most of this chemical?

Facilities with the largest reported releases of 4,4'-Isopropylidenediphenol. Up to 50 shown.

# Facility Release (lbs)
1 Sabic Innovative Plastics Mt. Vernon LLC
7.1M lbs
2 M. Argueso & Co. Inc. (d.b.a Paramelt)
1.8M lbs
3 M. Argueso & Co. Inc.
1.2M lbs
4 M. Argueso & Co. Inc. (d.b.a. Paramelt)
748.2K lbs
5 Westlake Epoxy Inc.- Deer Park Site
655.1K lbs
6 Clean Harbors Lone Mountain LLC Lone Mountain Facility
244.0K lbs
7 Pcc Airfoils LLC - Minerva
123.2K lbs
8 Pcc Mentor LLC
107.5K lbs
9 Aalberts Integrated Piping Systems Americas
107.1K lbs
10 Tesla Inc
103.6K lbs
11 Howmet Castings & Services Inc
103.2K lbs
12 Remet Pic Inc.
98.7K lbs
13 Solvay Specialty Polymers USA LLC
96.9K lbs
14 Ppg Industries Inc-Oak Creek
76.6K lbs
15 Gabriel Phenoxies Inc
62.5K lbs
16 Sabic Innovative Plastics US LLC
59.1K lbs
17 Eq Detroit Inc
58.4K lbs
18 Sherwin-Williams Co
57.6K lbs
19 Yamaha Marine Precision Propellers Inc. Greenfield
52.2K lbs
20 Pcc Airfoils Renaissance Park
36.3K lbs
21 Tradebe Treatment & Recycling LLC
34.6K lbs
22 Ppg Industries Ohio Inc - Delaware
30.0K lbs
23 Stoncor Group Inc.
26.0K lbs
24 Ha International LLC
22.8K lbs
25 Basf Corp
21.9K lbs
26 Cera-Met
20.4K lbs
27 Tesla Inc
17.3K lbs
28 Esco Group
16.8K lbs
29 Freeport_olin Bc
16.6K lbs
30 Group 14 Technologies Inc
16.3K lbs
31 Pcc Structurals Inc.
15.8K lbs
32 Akzo Nobel Coatings Inc.
14.0K lbs
33 Evonik Corp
11.9K lbs
34 Akzo Nobel Coatings
11.7K lbs
35 Vantage Specialties
11.1K lbs
36 Ppg Industries Ohio Inc Circleville Oh
10.5K lbs
37 Pcc Structurals-San Leandro
9.9K lbs
38 Penn-Mar Castings LLC
8.2K lbs
39 Palmer International Inc.
6.1K lbs
40 Arnette Polymers LLC
6.1K lbs
41 Pcc Airfoils LLC
5.8K lbs
42 Howmet Castings & Services Inc.
5.8K lbs
43 Pcc Structurals
4.0K lbs
44 Oxiteno USA LLC
3.2K lbs
45 Polynt Composites USA Inc
3.2K lbs
46 Pcc Airfoils Llc/smp
3.2K lbs
47 Essex Specialty Products LLC - Hillsdale Site
3.1K lbs
48 Westlake Epoxy Inc
2.7K lbs
49 Mubea Inc
2.6K lbs
50 Stoncor Group Inc.
2.5K lbs

Frequently Asked Questions

What is 4,4'-Isopropylidenediphenol in the EPA TRI? ▼
4,4'-Isopropylidenediphenol (CAS Number: 80-05-7) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. It is not marked as a carcinogen in the TRI classification set. 161 facilities in the United States report releasing this chemical to the EPA.
How much 4,4'-Isopropylidenediphenol is disclosed in U.S. TRI filings? ▼
U.S. facilities have reported a total of 13.2M lbs of 4,4'-Isopropylidenediphenol releases to the EPA Toxic Release Inventory across 161 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 4,4'-Isopropylidenediphenol? ▼
4,4'-Isopropylidenediphenol 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 4,4'-Isopropylidenediphenol? ▼
Sabic Innovative Plastics Mt. Vernon LLC in IN reports the largest disclosed release of 4,4'-Isopropylidenediphenol in this dataset, at 7.1M 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 161 facilities on this page.
What is the CAS number for 4,4'-Isopropylidenediphenol? ▼
The CAS (Chemical Abstracts Service) Registry Number for 4,4'-Isopropylidenediphenol is 80-05-7. 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.