Accessible Rendition: Chemistry Department's Chemical Disposal Flow Chart

The following narrative can used for the proper disposal of chemicals.

  1. Is it food or beverages (Not Solid)?
    • Yes - Safely dispose into the sewer via sink or toilet.
    • No - Then go to Step 2.
  2. Is it human waste or artificial human waste?
    • Yes - Safely dispose into the sewer via sink or toilet.
    • No - Then go to Step 3.
  3. Is it halogenated waste?
    • Yes - Place in a halogenated wast container. (A polyethylene container.)
    • No - Then return the chemical to it's least toxic oxidation state and go to Step 4.
  4. Is it heavy metal waste?
    • Yes - Place in a heavy metal waste container. (A glass or polyethyene container.)
    • No - Then go to Step 5.
  5. Is it a chemical on the TTO List or a non-halogenated solvent?
    • Yes - Place in non-lalogenated wste container. (A metal container.)
    • No - Then go to Step 6.
  6. Is it organic contaminated wash water?
    • Yes - Students are to save the wash water and instructors will test it for halogens. (Flame test.)
      1. 6.1 Does the waste contain halogens?
        • Yes - Place in halogenated waste container. (A polyethylene container.)
        • No- Then neutralize the chemical to the PH range ≥ 5.5 and ≤ 9.5 and safely dispose into the sewer via sink or toilet.
    • No - Then neutralize the checmical to the PH range ≥ 5.5 and ≤ 9.5 and safely dispose into the sewer via sink or toilet.