Used as a reagent in analytical chemistry for the detection of sulfide ions, forming a dark precipitate of lead sulfide. Commonly employed in qualitative inorganic analysis and in the preparation of other lead compounds. Historically used in cosmetics and hair dyes, though such uses have declined due to toxicity concerns. Also utilized in the textile industry for weighting silk and in the production of pigments. Its ability to form insoluble salts makes it useful in precipitation reactions and in laboratory settings for demonstrating chemical reactivity of heavy metals.