To clean glassware used with organic chemicals, which should be used first?

The initial step in cleaning glassware used with organic chemicals should involve using an organic solvent in a waste container. This approach is correct because organic solvents are effective at dissolving and breaking down organic residues on glassware that may not be removed by water or detergents alone.

When cleaning glassware that has been in contact with non-polar organic compounds, rinsing with an appropriate organic solvent ensures that any residues, such as oils or unreacted reagents, are removed efficiently. It's essential to use a designated waste container for the solvent to adhere to safety protocols and waste disposal regulations, as organic solvents can be hazardous to both health and the environment.

Following this step, other cleaning methods, such as using detergent and water or hot water, can be employed to ensure the glassware is thoroughly cleaned, but starting with a solvent is crucial for effective removal of organic contaminants.