Elementary Neutralization Guide

Hazardous waste may have up to (4) potential "characteristic properties" as defined by the EPA:  ignitability, corrosivity, reactivity, and toxicity.

Hazardous waste that is regulated only for the characteristic of corrosivity (pH <=2 and pH >=12.5) can be treated (neutralized) and disposed of down a sink drain as long as several conditions are met:

  • The waste is hazardous ONLY because of the corrosivity characteristic.  It can not contain any underlying hazardous constituents, such as heavy metals or trace organic solvents
  • ​The waste is neutralized in a container, which is any portable device which has a lid/cap that can be securely closed
  • ​The waste must be brought to a pH between 5 and 9 in order to comply with local waste water treatment plant regulations before drain disposal
  • If the hazardous waste is being accumulated for any time prior to neutralization, the container must have the words “Hazardous Waste” displayed along with an accurate description of the contents.  Additionally, the cap/lid must be kept on the container at all times unless adding waste
  • Appropriate PPE must be worn and the activity must take place under a fume hood using accepted neutralization procedures to ensure safety

If you are unsure about a hazardous chemical waste or need any assistance, please call 706-542-5801.