Unwanted material means any chemical, mixtures of chemicals, products of experiments or other material from a laboratory that is no longer needed, wanted or usable in the laboratory and that is destined for hazardous waste determination by a trained professional. Unwanted materials include reactive acutely hazardous unwanted materials and materials that may eventually be determined not to be solid waste pursuant to 261.2, or a hazardous waste pursuant to 261.3. If an eligible academic entity elects to use another equally effective term in lieu of unwanted material, as allowed by 262.206(1)(i), the equally effective term has the same meaning and is subject to the same requirements as unwanted material under this subpart.
40 CFR § 262.200
The following definitions apply to this subpart: