Hydrochloric Acid (HCl)

Hydrochloric Acid (HCl) is a strong, highly corrosive mineral acid widely used in metal cleaning, pH control, food processing, and chemical manufacturing. It is a clear, colorless liquid with a sharp pungent odor and is essential in producing inorganic and organic compounds, as well as in water treatment.

Chemical Specification:

 Chemical Formula                                    : HCl
 Appearance                                              : Colorless to slightly yellow, fuming liquid
                                                                    (depending on concentration and impurities)
 Odor                                                         : Pungent, irritating odor
 Concentration (Commercial Grade)         : 30%−36% by weight (higher concentrations are
                                                                    available but less common for general water
                                                                    treatment due to fuming and handling difficulties)
 pH (1% solution)                                       : <1.0 (highly acidic)
 Specific Gravity                                         : 1.15−1.19 (for 30%−36% solutions)
 Solubility in Water                                     : Completely miscible (soluble) in water at all concentrations.
 Boiling Point                                              : Varies significantly with concentration

                                                                      (e.g.,108.58°C for 20.2% HCl constant boiling azeotrope)
 Freezing Point                                           : Varies significantly with concentration

                                                                      (e.g.,−46.2°C for 30% HCl, −30.2°C for 36% HCl)
 Storage                                                      : Store in corrosion-resistant containers

                                                                      (e.g.,plastic-lined steel, fiberglass reinforced
                                                                      plastic, or specialized plastics like HDPE). Keep

                                                                      in a cool, well-ventilated area, away from strong
                                                                      bases, oxidizing agents, and metals. Avoid direct

                                                                      sunlight and extreme temperatures.
 Shelf Life                                                    : Indefinite if stored properly in sealed

                                                                      containers. 

Application:

• Helps to adjust the pH for alkaline wastewater.
• Helps to regenerate cation exchange resin.
• To remove mineral scale deposition from equipment like pipes,heat exchangers, and RO membranes.