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Metham Sodium

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CAS Number: 137-42-8

Metham Sodium (CAS 137-42-8) 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.

Across the United States, 13 facilities have filed TRI Form R disclosures for Metham Sodium, with a cumulative reported release volume of 106.9K lbs. The chemical is not flagged as a carcinogen in the TRI classification set. The largest individual disclosure in the current dataset comes from US ECOLOGY IDAHO INC. in ID at 40.9K 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.

Release Summary

Total Releases
106.9K lbs
Number of Facilities
13
Carcinogen
No
Persistent Bioaccumulative Toxicant
No

Which facilities release the most of this chemical?

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

# Facility Release (lbs)
1 US Ecology Idaho Inc. 40.9K lbs
2 Amvac Chemical Co 27.4K lbs
3 Tessenderlo Kerley Inc. 19.9K lbs
4 Tm Deer Park Services LP 11.8K lbs
5 Tidewater Terminal Co Snake River Terminal 4.3K lbs
6 Tessenderlo Kerley Inc. 1.8K lbs
7 Buckman Laboratories Inc. 784 lbs
8 Kelly Products Inc 25 lbs
9 Amvac Chemical Corp 0 lbs
10 Douglas Products & Packaging Co 0 lbs
11 Tessenderlo Kerely Inc. 0 lbs
12 Kemira Water Solutions Inc. 0 lbs
13 Triest Ag Group Inc 0 lbs

Frequently Asked Questions

What is Metham Sodium? ▼
Metham Sodium (CAS Number: 137-42-8) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. 13 facilities in the United States report releasing this chemical to the EPA.
How much Metham Sodium is released in the U.S.? ▼
U.S. facilities have reported a total of 106.9K lbs of Metham Sodium releases to the EPA Toxic Release Inventory across 13 facilities. Release quantities are self-reported estimates. This includes releases to air, water, land, and off-site transfers.
Is Metham Sodium harmful to health? ▼
Metham Sodium is not classified as a carcinogen in the EPA TRI database. Health effects depend on exposure levels, duration, and route. For specific health questions, consult a toxicologist or your local health agency.
Which facilities release the most Metham Sodium? ▼
The largest reported releasers of Metham Sodium include facilities across multiple states. Release data is self-reported annually to the EPA under the TRI program. View the full list of 13 facilities on this page.
What is the CAS number for Metham Sodium? ▼
The CAS (Chemical Abstracts Service) Registry Number for Metham Sodium is 137-42-8. 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 Editorial

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.