Hydrochloric acid is a clear, colorless to slightly yellow aqueous solution of hydrogen chloride gas, with a pungent odor and strong acidic properties. As one of the most important inorganic acids, HCl is used extensively in industry, manufacturing, and scientific research. Commercial hydrochloric acid typically ranges in concentration from 10% to 38%, with higher concentrations being more corrosive and volatile.
Despite its utility, hydrochloric acid poses several significant challenges:
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High corrosivity, leading to rapid deterioration of storage tanks, pipelines, and processing equipment if not properly protected.
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Fume generation, especially in higher concentrations, which can cause respiratory irritation and environmental harm.
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Handling and safety risks, including chemical burns, toxic gas release, and incompatibility with many organic substances and metals (e.g., when releasing hydrogen gas).
Current industrial practices rely on ventilation, dilution, and protective coatings to manage these hazards, but these are often costly and inefficient. There is a need for improved hydrochloric acid formulations and containment technologies that reduce environmental exposure, increase worker safety, and prolong equipment lifespan.