EPA TRI Chemical

1,2-Dichloro-1,1-Difluoroethane (hcfc-132b)

Q: What is 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b) in the EPA TRI?

1,2-Dichloro-1,1-Difluoroethane (hcfc-132b) (CAS Number: 1649-08-7) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. It is not marked as a carcinogen in the TRI classification set. 1 facilities in the United States report releasing this chemical to the EPA.

Q: How much 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b) is disclosed in U.S. TRI filings?

U.S. facilities have reported a total of 94.1K lbs of 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b) releases to the EPA Toxic Release Inventory across 1 facilities. Release quantities are self-reported estimates covering air, water, land, and off-site transfers. They are disclosure totals, not toxicity-weighted harm scores.

Q: How does EPA TRI classify 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b)?

1,2-Dichloro-1,1-Difluoroethane (hcfc-132b) 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.

Q: Which facilities disclose the most 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b)?

Arkema Inc in KY reports the largest disclosed release of 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b) in this dataset, at 94.1K 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 1 facilities on this page.

Q: What is the CAS number for 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b)?

The CAS (Chemical Abstracts Service) Registry Number for 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b) is 1649-08-7. 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.

CAS Number: 1649-08-7

Total releases: 94.1K lbs
Number of facilities: 1
Carcinogen: No
PBT substance: No

Compiled by PlainEnviro · August 25, 2026

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According to the EPA Toxics Release Inventory, 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b) (CAS 1649-08-7) is disclosed by 1 Form R facility totaling 94.1K lbs of reported releases. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.

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1,2-Dichloro-1,1-Difluoroethane (hcfc-132b) (CAS 1649-08-7) 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 ARKEMA INC in KY at 94.1K 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.

AIR pathway mix

1,2-Dichloro-1,1-Difluoroethane (hcfc-132b): how the 94.1K lbs splits

94.1K lbs across all reported pathways

Air Releases94.0K lbs99.9%
Water Discharges71 lbs0.1%
Land Disposal0 lbs<0.1%

1,2-Dichloro-1,1-Difluoroethane (hcfc-132b)'s 94.1K lbs Form-R total is AIR, with air releases making up 99.9% of the bar. Next segment: water discharges at 0.1%.

Trend & Where It's Reported

Reported Release Trend

Between 2019 and 2023, cumulative annual 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b) releases across all reporting facilities decreased by 100% (32.5K lbs → 66 lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b) is highly concentrated: Kentucky accounts for 100.0% of the reported total (1 facility).

Kentucky 94.1K lbs

Industry Sources

Reporting for 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b) is highly concentrated by industry: Chemicals facilities account for 100.0% of the reported total (1 facility).

Chemicals 94.1K lbs

Which facilities release the most of this chemical?

Facilities with the largest reported releases of 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b). Up to 50 shown.

#	Facility	Location	Release (lbs)	Year
1	Arkema Inc	Calvert City, KY	94.1K lbs	2023

Frequently Asked Questions

What is 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b) in the EPA TRI? ▼

1,2-Dichloro-1,1-Difluoroethane (hcfc-132b) (CAS Number: 1649-08-7) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. It is not marked as a carcinogen in the TRI classification set. 1 facilities in the United States report releasing this chemical to the EPA.

How much 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b) is disclosed in U.S. TRI filings? ▼

U.S. facilities have reported a total of 94.1K lbs of 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b) releases to the EPA Toxic Release Inventory across 1 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 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b)? ▼

1,2-Dichloro-1,1-Difluoroethane (hcfc-132b) 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 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b)? ▼

Arkema Inc in KY reports the largest disclosed release of 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b) in this dataset, at 94.1K 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 1 facilities on this page.

What is the CAS number for 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b)? ▼

The CAS (Chemical Abstracts Service) Registry Number for 1,2-Dichloro-1,1-Difluoroethane (hcfc-132b) is 1649-08-7. 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.

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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.