Formaldehyde and formalin are regulated hazardous waste under EPA RCRA. This guide covers classification, storage, and disposal requirements.

EPA Code U122 Formaldehyde

Formaldehyde, unused commercial solutions, is classified as hazardous waste under EPA code U122. Used formaldehyde-contaminated materials may also be classified as hazardous depending on concentration and state law.

Storage

Secondary containment at 110% of largest container capacity. Hazard labels required. Segregate from incompatibles. Store in well-ventilated area.

Disposal

Use licensed hazardous waste hauler and permitted disposal facility. Do NOT drain, landfill, or burn without proper authorization. Typical cost: $2-10/gallon.

Consult EPA, state environmental agency, and waste management professionals for facility-specific requirements.