EPA TRI Chemical
3,3'-Dichlorobenzidine Dihydrochloride
CAS Number: 612-83-9
- Total releases
- 85 lbs
- Number of facilities
- 3
- Carcinogen
- Yes
- PBT substance
- No
According to the EPA Toxics Release Inventory, 3,3'-Dichlorobenzidine Dihydrochloride (CAS 612-83-9) is disclosed by 3 Form R facilities totaling 85 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.
3,3'-Dichlorobenzidine Dihydrochloride (CAS 612-83-9) 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 SUN CHEMICAL CORP MUSKEGON PLANT in MI at 79 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.
OFFSITE pathway mix
3,3'-Dichlorobenzidine Dihydrochloride: how the 85 lbs splits
85 lbs across all reported pathways
- Off-site Transfers65 lbs76.6%
- Air Releases20 lbs23.4%
- Land Disposal0 lbs<0.1%
3,3'-Dichlorobenzidine Dihydrochloride's 85 lbs Form-R total is OFFSITE, with off-site transfers making up 76.6% of the bar. Next segment: air releases at 23.4%.
Trend & Where It's Reported
Between 2019 and 2023, cumulative annual 3,3'-Dichlorobenzidine Dihydrochloride releases across all reporting facilities increased by 99% (19 lbs → 38 lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.
Reporting for 3,3'-Dichlorobenzidine Dihydrochloride is highly concentrated: Michigan accounts for 92.3% of the reported total (1 facility). Next: Illinois.
- Michigan 79 lbs
- Illinois 6 lbs
- Ohio 1 lbs
Reporting for 3,3'-Dichlorobenzidine Dihydrochloride is highly concentrated by industry: Chemicals facilities account for 100.0% of the reported total (3 facilities).
- Chemicals 85 lbs
Which facilities release the most of this chemical?
Facilities with the largest reported releases of 3,3'-Dichlorobenzidine Dihydrochloride. Up to 50 shown.
| # | Facility | Release (lbs) |
|---|---|---|
| 1 | Sun Chemical Corp Muskegon Plant | |
| 2 | Apollo Colors Inc. | |
| 3 | Flint Group Pigments |
Frequently Asked Questions
What is 3,3'-Dichlorobenzidine Dihydrochloride in the EPA TRI? ▼
How much 3,3'-Dichlorobenzidine Dihydrochloride is disclosed in U.S. TRI filings? ▼
How does EPA TRI classify 3,3'-Dichlorobenzidine Dihydrochloride? ▼
Which facilities disclose the most 3,3'-Dichlorobenzidine Dihydrochloride? ▼
What is the CAS number for 3,3'-Dichlorobenzidine Dihydrochloride? ▼
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
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.