Warning : Undefined variable $pageheading in /home/ehsocom/public_html/Hazwaste_Character.htm on line 27
How to Identify Hazardous Wastes - Characteristic Haz Wastes - D001 to D043
By EHSO.com, the site for free, objective, practical information about the environment, health and safety in 2026!
How to Identify Hazardous Wastes - Characteristic Haz Wastes - D001 to D043
How to Identify Hazardous Wastes - Characteristic Haz Wastes - D001 to D043
EPA Toxicity Characteristic Hazardous Waste Information
Back to the Table of Contents page for information on many other subjects!
Related guidance memos from the EPA
Maximum Concentration of Contaminants for the Toxicity Characteristic
| EPA HW No. 1 | Contaminant | CAS No. 2 | Regulatory Level (mg/L) |
| D004 | Arsenic | 7440-38-2 | 5.0 |
| D005 | Barium | 7440-39-3 | 100.0 |
| D018 | Benzene | 71-43-2 | 0.5 |
| D006 | Cadmium | 7440-43-9 | 1.0 |
| D019 | Carbon tetrachloride | 56-23-5 | 0.5 |
| D020 | Chlordane | 57-74-9 | 0.03 |
| D021 | Chlorobenzene | 108-90-7 | 100.0 |
| D022 | Chloroform | 67-66-3 | 6.0 |
| D007 | Chromium | 7440-47-3 | 5.0 |
| D023 | o-Cresol | 95-48-7 | 4 200.0 |
| D024 | m-Cresol | 108-39-4 | 4 200.0 |
| D025 | p-Cresol | 106-44-5 | 4 200.0 |
| D026 | Cresol | -- | 4 200.0 |
| D016 | 2,4-D | 94-75-7 | 10.0 |
| D027 | 1,4-Dichlorobenzene | 106-46-7 | 7.5 |
| D028 | 1,2-Dichloroethane | 107-06-2 | 0.5 |
| D029 | 1,1-Dichloroethylene | 75-35-4 | 0.7 |
| D030 | 2,4-Dinitrotoluene | 121-14-2 | 3 0.13 |
| D012 | Endrin | 72-20-8 | 0.02 |
| D031 | Heptachlor (and its epoxide) | 76-44-8 | 0.008 |
| D032 | Hexachlorobenzene | 118-74-1 | 3 0.13 |
| D033 | Hexachlorobutadiene | 87-68-3 | 0.5 |
| D034 | Hexachloroethane | 67-72-1 | 3.0 |
| D008 | Lead | 7439-92-1 | 5.0 |
| D013 | Lindane | 58-89-9 | 0.4 |
| D009 | Mercury | 7439-97-6 | 0.2 |
| D014 | Methoxychlor | 72-43-5 | 10.0 |
| D035 | Methyl ethyl ketone | 78-93-3 | 200.0 |
| D036 | Nitrobenzene | 98-95-3 | 2.0 |
| D037 | Pentrachlorophenol | 87-86-5 | 100.0 |
| D038 | Pyridine | 110-86-1 | 3 5.0 |
| D010 | Selenium | 7782-49-2 | 1.0 |
| D011 | Silver | 7440-22-4 | 5.0 |
| D039 | Tetrachloroethylene | 127-18-4 | 0.7 |
| D015 | Toxaphene | 8001-35-2 | 0.5 |
| D040 | Trichloroethylene | 79-01-6 | 0.5 |
| D041 | 2,4,5-Trichlorophenol | 95-95-4 | 400.0 |
| D042 | 2,4,6-Trichlorophenol | 88-06-2 | 2.0 |
| D017 | 2,4,5-TP (Silvex) | 93-72-1 | 1.0 |
| D043 | Vinyl chloride | 75-01-4 | 0.2 |
2 Chemical abstracts service number.
3 Quantitation limit is greater than the calculated regulatory level. The quantitation limit therefore becomes the regulatory level.
4 If o-, m-, and p-Cresol concentrations cannot be differentiated, the total cresol (D026) concentration is used. The regulatory level of total cresol is 200 mg/l.
US Federal Register notices of interest:
[55 FR 11862, Mar. 29, 1990, as amended at 55 FR 22684, June 1, 1990; 55 FR 26987, June 29, 1990; 58 FR 46049, Aug. 31, 1993]
EPA Listed Hazardous Waste
EPA Listed Hazardous Waste can be found on pages 18-37 of the followingAdobe Acrobat file. You need to open the file with the Adobe Acrobat Reader.
If you do not have the Adobe Acrobat Reader, it is available free.
Download file 40P0261.PDF
EPA Listed Hazardous Waste
Learn more about hazardous waste and the regulations that govern it:
- Definition of Solid Waste (DSW) : Before a material can be classified as a hazardous waste, it must first be a solid waste as defined under RCRA. Resources , including an interactive tool , are available to help.
- Types of Hazardous Waste : Hazardous waste are divided into listed wastes, characteristic wastes, universal wastes , and mixed wastes. Specific procedures determine how waste is identified , classified, listed, and delisted.
- Generators : Hazardous waste generators are divided into categories based on the amount of waste they produce each month. Different regulations apply to each generator category.
- Transporters : Hazardous waste transporters move waste from one site to another by highway, rail, water, or air. Federal and, in some cases, State regulations govern hazardous waste transportation, including the Manifest System
- Treatment, Storage, and Disposal (TSD) : Requirements for TSD facilities govern the treatment, storage and disposal of hazadous waste, including land disposal , the permitting process and requirements for TSD facilities .
- Waste Minimization : EPA, States, and industries are working to reduce the amount, toxicity, and persistence of wastes that are generated.
- Hazardous Waste Recycling : EPA is addressing safe and protective reuse and reclamation of hazardous materials.
- Corrective Action : RCRA compels those responsible for releasing hazardous pollutants into the soil, water, or air to clean up those releases.
- Test Methods : EPA has a variety of analytical chemistry and characteristic testing methodologies, environmental sampling and monitoring, and quality assurance in place to support RCRA.
- International Waste : EPA provides information and guidance on regulations, agreements, initiatives, and other developments in waste policy and law, both in the United States and abroad.
This page was updated on 29-Aug-2025
