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The formation, radiation, and quenching of $HgC1(B2\Sigma +)$ have been investigated using a laser-induced chemiluminescence technique, Hg/$Cl2$/Ar mixtures were irradiated near 2537 {\AA} by a frequency-doubled nitrogen-pumped pulled dye laser. The $Hg\ast (3P1)$ produced reacted with $Cl2$ to yield $HgCl\ast (B2\Sigma +)$. The time behavior of the $HgCl(B2\Sigma +)\to HgCl(X2\Sigma +)$ chemiluminescence was analyzed to obtain the following preliminary results:[FIGURE]