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Solvent Waste

Waste solvent from chemical processes or cleaning should be be collected for disposal as hazardous waste.

Waste solvent at Earlham typically falls into four waste stream categories:

  • Non-Halogenated Solvent Waste:  This is the most common waste stream, consisting of solvents such as acetone, ethanol, methanol, ether, hexanes, ethyl acetate, and toluene.
  • Halogenated Solvent Waste:  Solvent waste that contains, either in total or as a mixture, halogenated solvents such as chloroform, dichloromethane (methylene chloride)
  • Heavy Metals Solvent Waste:  Solvent waste that contains quantities of heavy metals, such as arsenic, barium, cadmium, chromium, lead, mercury, selenium and silver
  • Paint Solvent and Residue:  Solvent waste resulting from using oil based paints and thinners, including amounts of oil-based paint residue

All of these waste streams should be collected in a container that is suitable for the waste being collected and labeled with the words "HAZARDOUS WASTE" along with the name of the waste stream.

If you are unsure of what waste stream your process falls under, are starting a new process that generates waste, or have any other questions, please contact the Chemical Hygiene Officer.

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Earlham College, an independent, residential college, aspires to provide the highest-quality undergraduate education in the liberal arts, including the sciences, shaped by the distinctive perspectives of the Religious Society of Friends (Quakers).

Earlham College
801 National Road West
Richmond, Indiana
1-765-983-1200 — Main Switchboard
1-800-EARLHAM (327-5426) — Admission


Earlham admits students of any race, color, national and ethnic origin, age, gender and sexual orientation to all the rights, privileges, programs, and activities generally accorded or made available to students at the school. It does not discriminate on the basis of race, color, national and ethnic origin, age, gender and sexual orientation in administration of its educational policies, admissions policies, scholarship and loan programs, and athletic and other school-administered programs.