Copper rates, and carcass dressing percentages. Chronic copper toxicity does not normally occur in humans because of transport systems that regulate absorption and excretion. Autosomal recessive mutations in copper transport proteins can disable these systems, leading to Wilson's disease with copper accumulation and cirrhosis of the liver in persons who have inherited two defective genes. Elevated copper levels have also been linked to worsening symptoms of Alzheimer's disease. In the US, the Occupational Safety and Health Administration (OSHA) has designated a permissible exposure limit (PEL) for copper dust and fumes in the workplace as a time-weighted average (TWA) of 1 mg/m.
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