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polychlorinated biphenyls<br />

(PCBs)<br />

• Structure and characteristics of PCBs<br />

209 isomers ( 异 构 体 )<br />

Commonly 3~6 hydrion is substituted by chlorine ion, the<br />

content of Cl is as much as 42%~54%<br />

PCBs with less Cl content is usually in the liquid state. The<br />

more Cl content, the higher the viscosity. As for the external<br />

appearance, it varies from transparent liquid to white<br />

crystallines.

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