Organic chemistry experiments involve chemicals that must be handled with care. As evident by the material safety data sheets, the chemicals we use can be hazardous. Just as it's important to use caution handling the chemicals during the experiment, we must properly dispose of chemicals after finishing the experiment. Absolutely no waste should be thrown away in the trash. All liquids, including both reaction products and leftover chemical reagents, should be placed in the appropriately labeled bottle in the fume hood designated for waste collection. If you obtain too much of a chemical and have excess leftover at the end of the experiment, do not return the reagent to the bottle you obtained it from. This excess reagent is contaminated and should be placed in the waste bottle. Use the attached funnel to pour all liquids into the bottle. Close the top of the funnel after every addition of waste. Do not pour any liquids down the sink. Solid waste does not go in the trash. Place all solid waste from the experiment into the container labeled for solid waste in the fume hood. This includes the products of your reactions as well as any excess reagents that were not used. If any glass was broken during the experiment, be sure to carefully discard it in the broken glass container.