LYCOS RETRIEVER 
Hydrochloric Acid: Hydrogen Chloride
built 606 days ago
Hydrochloric acid solutions release hydrogen chloride, a corrosive gas. In studies with guinea pigs, mice and rats, relatively low concentrations of hydrogen chloride caused irritation and damage to the eyes and nose, inflammation of the nose and upper airways and decreased respiration rate from sensory irritation. In male mice, there was a 50% decrease in respiratory rate from 309 ppm for 10 minutes. Pulmonary irritation was seen in male guinea pigs exposed to 320 ppm for 20 minutes, and at 1040 ppm for 30 minutes, there was inflammation in the lower airways and in the alveoli. Exposure of baboons to 10000 ppm for 10 minutes caused lung damage (bleeding, inflammation, edema, fibrosis) with an effect on lung function that persisted after 1 year. In LC50 studies, exposure to hydrogen chloride gas or hydrochloric acid aerosols caused extreme irritation to the eyes with erosion and clouding of the cornea, mucous membranes and exposed areas of skin.(20)
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Hydrochloric acid (muriatic acid) is an aqueous solution of hydrogen chloride (HCl). It is a highly corrosive solution, which emits a pungent and irritating odor at normal atmospheric temperature and pressure conditions. HCl will react with most metals to yield hydrogen. The hydrogen evolved is flammable and can form explosive mixtures in air.
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Hydrochloric acid is a chemical compound. It is a solution of hydrogen chloride (HCl) gas that is dissolved in water. It used to be called [M]uriatic acid. It is widely used in industry, and it is ... made by the stomach to help digest food.
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Hydrochloric acid is the aqueous solution of hydrogen chloride gas (HCl). It is a strong acid, and the major component of gastric acid. It is ... widely used in industry. Hydrochloric acid must be handled with appropriate safety precautions because it is a highly corrosive liquid.
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Hydrochloric Acid (HCl): Also known as muriatic acid, HCl is the second most commonly used acid in industry (sulfuric is number one). HCl is a very effective, and a relatively inexpensive acid. At a maximum available concentration of 37% HCl is about 1/3 as potent as sulfuric acid, further contributing to the fact that HCl is more expensive to use than sulfuric. Depending on temperature and agitation, HCl at concentrations above 10% will evolve a hydrogen chloride vapor that forms very corrosive vapors when combined with the water vapor already in the air (humidity). The gas is very highly corrosive and will attack all metallic objects including building structures, sprinkler heads, copper wiring, stainless steel, etc. Therefore, if HCl is used it must be properly vented or used outdoors where the gasses can easily dissipate.
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Hydrochloric acid is corrosive to the eyes. Concentrations as low as 0.0000036% have caused slight corneal damage, while 3.6-10% have caused severe damage. In inhalation studies, hydrogen chloride gas has caused extreme eye irritation and corneal opacity.
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Hydrogen Chloride