S 1515 (OTTO) Silver chloride, 99% Cas 7783-90- 6 - used in glass manufacturing industryEmployed in Silver plating. Owing to its characteristic of reversible reduction to silver metal, it is used in photochromic lenses. S 1515 (OTTO) Silver chloride, 99% Cas 7783-90- 6 - used as a cathode in sea water activated batteries. In electrochemistry, silver chloride electrode is used for potentiometric measurements.