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w <br />:e <br /> 9 <br /> i <br /> LEAD <br /> CAS NO: 7339-97.--7. <br /> DOT NO: N/A <br /> DOT HAZARD CLASS: N/A <br /> Uses <br /> Lead is a white to bluish-gray metal. It is soft, malleable and <br /> slightly ductile. It tarnishes in air, forming a film of oxide. <br /> Lead is used for lining tanks, piping, and other equipment where <br /> pliability and c=r :osion resistance are required. It is also used <br /> as an ingredient in solder, a filler in the automobile industry, <br /> and a shielding material for x-ray and atomic radiation. Lead use <br /> will also appear in pigments for paints and varnishes, storage <br /> batteries, flint glass, vitreous enameling, ceramics as a glaze, <br /> litharge rubber, plastics, and electronic devices. Lead is <br /> utilized in metallurgy and may be added to bronze, brass, steel, <br /> and other alloys to improve their characteristics. <br /> Exposures to lead dust may occur during mining, smelting, <br /> refining, and to fuse during high temperature (above 5000 C) <br /> operations, such as welding or spray coating of metals with molten <br /> lead. <br /> ial <br /> seriouswas <br /> healthfhasard,randst isillr <br /> accounts rfor smany ocases ds a <br /> one of <br /> disability. <br /> Potential Dangers <br /> There are generally no local harmful effects of lead exposure, <br /> but systemic effects of lead poisoning become more obvious over <br /> time. The early effects are often nonspecific, and without <br /> laboratory testing, are difficult to distinguish from symptoms of <br /> seasonal illnesses. The early symptoms of lead poisoning are <br /> sleep disturbance, headache, aching <br /> decreased fitness, fatigue, <br /> bones and muscles, digestive problems (constipation) , abdominal <br /> pains, and a decreased appetite. These symptoms are reversible, <br /> and complete recove:cy is possible. <br /> Later stages of lead poisoning include anemia, pallor, a "lead <br /> line" or blue line on the gums, and decreased hand-grip strength. <br /> Lead colic produces an intense periodic abdominal cramping asso- <br /> ciated with severe constipation and, ocassionally, nausea and <br /> vomiting. The peripheral nerve affected most frequently is the <br /> radial nerve. When the central nervous system is affected, it is <br /> usually due to the ingestion or inhalation of large amounts of <br /> .Lead. This results in severe headache, convulsions, coma, <br />