Tony Pierce, an environmental specialist with the Missouri Department of Natural Resources, shares advice on how to safely dispose of chemicals from your classroom.

Some lab chemicals are also hazardous wastes when disposed.  There are some options for disposal, but often these must be managed with assistance from a contractor.  The following chemicals have been found historically in schools and are a significant concern:

  • Ammonium Perchlorate
  • Benzoyl Peroxide
  • Butanol 2 (Butyl Alcohol)
  • Carbon Disulfide
  • Collodion (Nitrocellulose)
  • Dinitrophenal, 2,4
  • Ethyl Ether (diethyl ether or anhydrous ether)
  • Hydrogen Peroxide, >29 percent
  • Nicotine
  • Nitroglycerin
  • Perchloric Acid
  • Phosphorus, Yellow or White
  • Picric Acid, Trinitrophenol
  • Sodium Azide

For assistance with lab chemical questions, please feel free to contact the Hazardous Waste Program :  800-361-4827, 573-751-3176.

In case of a mercury spill or a mercury thermometer, sphygmomanometer, or elemental mercury is found in a school, please call 573-634-2436.