Lead and Copper Rule especially for young children and pregnant women." It also explained that the rule has reduced copper exposure "that can cause stomach and intestinal distress, liver or kidney damage, and complications of Wilson’s disease in genetically predisposed people." Although lead is a known poison, the mechanical and chemical characteristics of the metal continue to keep lead as an important component in many products. In water supply, lead's durability and workability selected it for use as water pipes. Lead alloys (bronze, brass) are used for plumbing fittings. Lead solders were preferred in plumbing. While lead pipes were replaced by other materials, such
Copper(II) bromide was used as the bleaching step for intensifying collodion and gelatin negatives. Copper(II)bromide has also been proposed as a possible material in humidity indicator cards. Copper(II) bromide is harmful if swallowed. It affects the central nervous system, brain, eyes, liver, and kidneys. It causes irritation to skin, eyes, and respiratory tract. Copper(II) bromide Copper(II) bromide (CuBr) is a chemical compound. It is used in photographic processing as an intensifier and as a brominating agent in organic synthesis. It is also used in the copper vapor laser, a class of laser where the medium is copper bromide vapour formed in-situ from