Skin becomes yellow in concentrated Hno3 as
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Nitric acid has a corrosive action on the skin and causes painful blisters . It stains the skin yellow as it reacts with the protein of the skin and forms XANTHOPROTEIC acid
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According to the National Academy of Science's laboratory chemical safety summary on nitric acid, concentrated nitric acid vapors are highly hazardous to the eyes, skin and mucous membranes. The compound causes mild irritation and hardening of the skin. It also stains the skin yellow and produces deep, painful burns. When in contact with the eyes it is possible that severe burns and permanent damage result. Inhalation of nitric acid causes respiratory irritation and complications such as pulmonary edema. Ingestion leads potentially to burning of the mouth, throat and stomach.
The Centers for Disease Control advises flushing the skin and eyes with water immediately following contact with nitric acid. If inhaled or swallowed, medical attention is necessary. Possible medical complications from exposure to nitric acid beyond irritation of the eyes, skin and mucous membranes include delayed pulmonary edema, pneumonitis, bronchitis and dental erosion
The Centers for Disease Control advises flushing the skin and eyes with water immediately following contact with nitric acid. If inhaled or swallowed, medical attention is necessary. Possible medical complications from exposure to nitric acid beyond irritation of the eyes, skin and mucous membranes include delayed pulmonary edema, pneumonitis, bronchitis and dental erosion
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