Silver chloride is a
chemical compound with the
chemical formula AgCl. This white
crystalline solid is well known for its low
solubility in
water (this behavior being reminiscent of the chlorides of Tl
+ and Pb
2+). Upon illumination or heating, silver chloride converts to silver (and chlorine), which is signaled by greyish or purplish coloration to some samples. AgCl occurs naturally as a mineral
chlorargyrite.