School Environmental Health
Polychlorinated Biphenyls (PCBs)

Polychlorinated biphenyls (PCBs) are not a single chemical, but a class of 209 synthetic compounds, often used as insulators in electrical equipment, such as transformers, capacitors and ballasts. PCBs also were used as plasticizers in caulking and as thermal stabilizers in hydraulic and lubricating fluids.

Minnesota Pollution Control Agency

• Responding to PCB Leaks and Spills (PDF)
• Identifying, Using and Managing PCBs (PDF)
• Managing PCBs in Ballasts and Small Capacitors (PDF)
• Storing PCBs (PDF)

US Environmental Protection Agency

• Polychlorinated Biphenyls (PCBs) in Building Materials