Hydrochloric Acid HCl

Hydrochloric Acid HCl

Properties: All solutions above 10% are irritating. It is corrosive and reacts against known metals including iron, steel, and lead, releasing flammable hydrogen gas. It damages and destroys clothing. Reacts violently with bases and releases heat. In its reaction with oxidizing substances, toxic chlorine gas is released.

Applications: In manufacturing industry and chlor-alkali brine treatment, steel pickling, food calcium chloride, fat lightening, chlorine source, swimming pools, metal recovery, pH control, settled fat removal, sand and clay purification, sodium chloride production, metal chlorides, active carbon iron oxide pigments, polycarbonate resins, bisphenol A, polyvinyl chloride resins and synthetic glycerin, it is second only to sulfuric acid in synthetic chemistry and various industrial productions. Used in foods to increase acidity and provide hydrolysis of large molecules such as proteins.

Also used in ion exchange resin regeneration, vinyl chloride production for PVC, MDI and TDI production for polyurethane. Used in many small-scale applications such as leather processing, household cleaning, building construction. One way to stimulate oil production is to inject it into the rock formation of the oil source. Many chemical reactions requiring HCl are applied in the production of many foods, food substances, and food additives. Typical products of these reactions are aspartame, fructose, citric acid, lysine, hydrolyzed protein, and gelatin, etc. Tin and tantalum production, ore refining, metal product cleaning, scale removal from boilers, neutralization, laboratory indicator, catalyst and solvent in organic synthesis, fertilizer production and paint production, starch hydrolysis, and also used in textile and rubber industries. In textiles, pre-treatment with hydrochloric acid can be done before hydrogen peroxide bleaching. This not only provides partial hydrolysis of sizing but also removes calcium and magnesium ions in the lift.

Materials that should not be contacted: Commonly used metals, water, amines, metal oxides, acetic anhydride, propiolactone, formaldehyde, alkalis, carbonates, strong bases, sulfuric acid, chlorosulfonic acid.