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  1. Hydrochloric acid - Wikipedia

    Hydrochloric acid, also known as muriatic acid or spirits of salt, is an aqueous solution of hydrogen chloride (HCl). It is a colorless solution with a distinctive pungent smell.

  2. Hydrochloric Acid | HCl | CID 313 - PubChem

    Hydrochloric Acid | HCl or ClH | CID 313 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier …

  3. Hydrogen chloride | Definition, Formula, Properties, & Facts - Britannica

    Dec 24, 2025 · Hydrogen chloride, a compound of the elements hydrogen and chlorine, a gas at room temperature and pressure. Its chemical formula is HCl. A solution of the gas in water is called …

  4. HYDROCHLORIC ACID, SOLUTION | CAMEO Chemicals | NOAA

    HYDROCHLORIC ACID is an aqueous solution of hydrogen chloride, an acidic gas. Reacts exothermically with organic bases (amines, amides) and inorganic bases (oxides and hydroxides of …

  5. What Does HCl Mean in Chemistry and Biology?

    Sep 1, 2025 · The chemical formula HCl represents hydrochloric acid, a solution of hydrogen chloride gas dissolved in water. At room temperature, it exists as a colorless liquid with a pungent odor. As a …

  6. Hydrochloric Acid – Comprehensive Guide to Its Uses

    Aug 19, 2024 · Hydrochloric acid is a highly corrosive and strong mineral acid commonly used in various industries, including manufacturing, food processing, and chemical production.

  7. Hydrochloric Acid: Formula, Uses, Properties & Safety Explained

    Learn about hydrochloric acid—its formula, uses, pH, and safety tips. Understand HCl’s role in labs, industry, and digestion in clear, student-friendly language.

  8. Hydrochloric acid - New World Encyclopedia

    The chemical compound hydrochloric acid (or muriatic acid) is the aqueous (water -based) solution of hydrogen chloride gas (H Cl). This strong acid is highly corrosive and must be handled with …

  9. Hydrogen chloride - Wikipedia

    The resulting solution is called hydrochloric acid and is a strong acid. The acid dissociation or ionization constant, Ka, is large, which means HCl dissociates or ionizes practically completely in water.

  10. HYDROCHLORIC ACID Definition & Meaning - Merriam-Webster

    The meaning of HYDROCHLORIC ACID is an aqueous solution of hydrogen chloride HCl that is a strong corrosive irritating acid, is normally present in dilute form in gastric juice, and is widely used in …