PlainEnviro

EPA TRI Chemical

Diethyl Sulfate

CAS Number: 64-67-5

Total releases
57.0K lbs
Number of facilities
25
Carcinogen
Yes
PBT substance
No
Verify at EPA TRI →
Carcinogen

According to the EPA Toxics Release Inventory, Diethyl Sulfate (CAS 64-67-5) is disclosed by 25 Form R facilities totaling 57.0K 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.

View saved records

Diethyl Sulfate (CAS 64-67-5) 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 US ECOLOGY TEXAS INC in TX at 31.3K 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

Diethyl Sulfate: how the 57.0K lbs splits

57.0K lbs across all reported pathways

  • Land Disposal29.7K lbs52.1%
  • Air Releases25.9K lbs45.5%
  • Off-site Transfers1.4K lbs2.4%

Diethyl Sulfate's 57.0K lbs Form-R total is MIXED, with land disposal making up 52.1% of the bar. Next segment: air releases at 45.5%.

Trend & Where It's Reported

Reported Release Trend

Between 2019 and 2023, cumulative annual Diethyl Sulfate releases across all reporting facilities decreased by 90% (37.2K lbs → 3.8K lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for Diethyl Sulfate is highly concentrated: Texas accounts for 57.5% of the reported total (6 facilities). Next: Kentucky.

  • Texas 32.7K lbs
  • Kentucky 21.3K lbs
  • Alabama 2.1K lbs
  • Tennessee 362 lbs
  • South Carolina 337 lbs
Industry Sources

Reporting for Diethyl Sulfate is highly concentrated by industry: Hazardous Waste facilities account for 55.0% of the reported total (2 facilities). Next: Chemicals.

  • Hazardous Waste 31.3K lbs
  • Chemicals 25.6K lbs

Which facilities release the most of this chemical?

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

# Facility Release (lbs)
1 US Ecology Texas Inc
31.3K lbs
2 Isp Chemicals LLC
21.3K lbs
3 Ascend Performance Materials Operations Llc-Decatur Plant
2.1K lbs
4 Lubrizol Corp
671 lbs
5 Multi-Chem Group Bayport Tx Facility
559 lbs
6 Starchem LLC
328 lbs
7 Ascent Chemicals
250 lbs
8 Lamberti USA Conroe Plant 8910
179 lbs
9 Colonial Chemical Inc
112 lbs
10 Evonik Industries
66 lbs
11 3M Chemical Operations' Cordova Facility
43 lbs
12 Eco-Services Operations
14 lbs
13 Piedmont Chemical Industries I LLC
10 lbs
14 Ethox Chemicals LLC
9 lbs
15 Ac&s Inc
5 lbs
16 Clean Harbors Deer Park LLC
0 lbs
17 Nation Ford Chemical Co
0 lbs
18 Aquapharm Pchem Llc.
0 lbs
19 Verdant Specialty Solutions US LLC
0 lbs
20 Ascent Chemicals
0 lbs
21 Milliken Chemical - Dewey Plant
0 lbs
22 Omega Chemicals Inc
0 lbs
23 Apollo Chemical
0 lbs
24 Croda Inc
0 lbs
25 Elan Chemical Co Inc
0 lbs

Frequently Asked Questions

What is Diethyl Sulfate in the EPA TRI? ▼
Diethyl Sulfate (CAS Number: 64-67-5) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. The TRI extract marks it with a carcinogen classification flag based on EPA/IARC/NTP listings. 25 facilities in the United States report releasing this chemical to the EPA.
How much Diethyl Sulfate is disclosed in U.S. TRI filings? ▼
U.S. facilities have reported a total of 57.0K lbs of Diethyl Sulfate releases to the EPA Toxic Release Inventory across 25 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 Diethyl Sulfate? ▼
Diethyl Sulfate carries a carcinogen classification flag in the TRI database (drawn from EPA, IARC, or NTP listings). 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 Diethyl Sulfate? ▼
US Ecology Texas Inc in TX reports the largest disclosed release of Diethyl Sulfate in this dataset, at 31.3K lbs. Most reporting facilities for this chemical fall under hazardous waste. Release data is self-reported annually to the EPA under the TRI program. View the full list of 25 facilities on this page.
What is the CAS number for Diethyl Sulfate? ▼
The CAS (Chemical Abstracts Service) Registry Number for Diethyl Sulfate is 64-67-5. 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

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

Browse all → | Rankings →
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.