any chemical compound from a series of congeners based on biphenyl skeleton, differing from other compounds of this group by a number and position of chlorine atoms
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PCB warning label on a power transformer known to contain PCBs
Polychlorinated biphenyls (PCBs) are organochlorine compounds with the formula C12H10−xClx. They were once widely used in a range of industrial and consumer electronic products including the manufacture of carbonless copy paper, as heat transfer fluids, and as dielectric and coolant fluids for electrical equipment. They are highly toxic and carcinogenic chemical compounds, which led to production being banned internationally by the Stockholm Convention on Persistent Organic Pollutants in 2001.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).