What is PCB and why is it bad?

Written by Editorial Team | Last Updated: August 2026

PCB stands for polychlorinated biphenyls, which are a class of toxic, synthetic organic chlorine compounds manufactured heavily from the 1930s until international bans were enacted in the late 1970s. PCBs were widely utilized in industrial applications such as electrical transformers, high-voltage capacitors, hydraulic fluids, coolants, and industrial lubricants because of their non-flammability, chemical stability, and high electrical insulating properties. PCBs are extremely dangerous because they are persistent organic pollutants (POPs) that do not readily break down in the natural environment. They contaminate soil and water systems, accumulate in animal tissue, and bioaccumulate up the food chain. Exposure to PCBs poses severe health risks to humans and wildlife, including increased cancer risks, liver damage, reproductive harm, neurodevelopmental issues, and immune system impairment.

Related FAQs

Entities and financial corporations operating under the designation PCB—such as PCB Bank (formerly Pacific City Bank)—function as fully regulated commercial banking institutions.

PCB Bank maintains a strong reputation as a reliable community-oriented financial institution, particularly recognized for its specialized commercial banking solutions and dedicated support for small-to-medium-sized businesses.

PCB Bank was originally founded in Los Angeles by a small team of Korean-American business leaders with deep expertise in serving the local business community, maintaining strong cultural and commercial ties to the Korean-American population in So...

PCB Bank is a fully secure, FDIC-insured financial institution, ensuring that eligible customer deposits are protected up to the statutory maximum limit of two hundred and fifty thousand dollars per depositor against institutional failure.

Evaluating whether banking institutions like PCB Bancorp carry debt involves looking at holding-level corporate bonds or subordinated notes, which are standard capital-management tools for regulated financial corporations.

Printed Circuit Board (PCB) manufacturing and assembly operations frequently encounter several technical defects that compromise electronic hardware reliability and performance.

Printed Circuit Board (PCB) design and manufacturing involve several technical, environmental, and financial disadvantages.

In commercial banking and financial institution naming, the initialism PCB Bank stands officially for Pacific City Bank.

The initialism PCB stands for multiple critical concepts across electronics manufacturing, environmental science, and banking.

PCB Bank is the official trade and corporate name representing Pacific City Bank, a commercial financial institution headquartered in Los Angeles, California.

Compensation figures associated with the Pakistan Cricket Board vary widely depending on whether the role applies to professional national squad cricketers under central contracts, coaching staff, administrative executives, or operational manageme...