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A Hazardous Waste is any material that is subject to the EPA's Hazardous Waste Manifest specified in 40CFR262.

A Hazardous Substance - is any material listed as having Reportable Quantities Pursuant to Section 311 of the Clean Water Act (40CFR117.3)

A Hazardous Material is any material or object that meets the any of the definitions of Hazard Classes in 49 CFR or that is listed in the Hazardous Materials Table at 49CFR172.101

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12y ago
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13y ago
AnswerAll toxic is materials are hazardous, but not all hazardous materials are toxic. For example, an explosive is hazardous but not necessarily toxic. AnswerHazardous materials might not necessarily be toxic. Hazardous materials are things that should be handled with care and can be potentially dangerous if not taken with caution. For example, medical offices have a Hazardous Material box for needles that have been used among other medical equipment. They pose a threat if not handled properly, but just touching a used needle isn't going to be harmful to a person, but they do have potential to harm, that is why it is hazardous to the health. Toxic can be deadly. Toxic can be waste or gas or anything that is deemed fatal. For example, Waste Plants are toxic, and the people who work in these plants are professionals who must wear gas masks and toxic suits - think of Homer Simpson in the opening credits and theme song of The Simpsons if you need a mental picture. So while Hazardous Material has the potential of health risk and endangerment, Toxic Materials are fatal when not handled properly.
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12y ago

A toxic chemical is one that can poison you. It os one kind of hazardous chemical. Other kinds include:

  • flammable liquid
  • flammable solid
  • corrosive
  • compressed gas / aerosol
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13y ago

No.

All hazardous wastes and hazardous substances are hazardous materials, but not all hazardous materials are hazardous wastes or hazardous substances.

In the US regulations of the Department of Transportation, a Hazardous Substance is a material specifically listed by name in a particular part of the regulations. A Hazardous Waste is something meeting the EPA definition of that term. A hazardous material is one that has been determined by the Secretary of Transportation to present a potential risk to life or property in the course of transportation.

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12y ago

Yes, a hazardous waste is always a hazardous material, but a hazardous material is not always a hazardous waste.

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9y ago

hazardous means it's dangerous

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Q: Are hazardous materials hazardous substances and hazardous wastes all the same thing?
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