Hydrochloric Acid (HCL)
Applications
Hydrochloric Acid (HCL) is a strong inorganic acid widely used across chemical manufacturing, steel processing, water treatment, pharmaceuticals, and industrial cleaning industries. Due to its high reactivity, effective pH control, and cleaning efficiency, HCL is one of the most important industrial chemicals
Chemical Industry
Hydrochloric acid is extensively used as a chemical intermediate in the manufacture of chlorides, inorganic salts, dyes, pigments, and specialty chemicals.
Steel & Metal Processing
Used in steel pickling and metal surface treatment to remove rust, scale, and oxide layers before galvanizing, plating, or further processing.
Water Treatment
Applied in water purification and wastewater treatment for pH control, regeneration of ionexchange resins, and removal of alkaline impurities.
Pharmaceutical Industry
Used in the production of pharmaceutical intermediates, APIs, and medicines, as well as for pH adjustment in formulations.
Food Industry (Food Grade HCL)
Used under controlled conditions for food processing, pH regulation, sugar processing, and starch modification.
Oil & Gas Industry
Used in oil well acidizing and drilling operations to dissolve carbonate formations and improve well productivity.
| Sr No. | Characteristics | Requirement as per IS 265 : 1991 | Average Quality |
| 1 | Total Acidity (as HCl) Percent by mass, min | 30 | 30 |
| 2 | Residue on Ignition, ppm, max | 1000 | 100 |
| 3 | Sulphates (as H2SO4) ppm, max | 1000 | 200 |
| 4 | Iron (as Fe) ppm, max | 50 | 2 |
| 5 | Free Chlorine and Bromine (as HCl) ppm, max | 10 | 10 |
| 6 | Sulphite (as SO2) ppm, max | 500 | 50 |
| 7 | Heavy Metals (as Pb) ppm, max | - | N.D. |
| 8 | Arsenic (as As) ppm, max | - | N.D. |
| 9 | Ammonium Compounds (as NH4) | - | N.D. |