10 Uses of Hydrochloric Acid

Did you know that the human stomach contains Hydrochloric Acid?  It is found in Gastric Acid which is a key part of the human digestive system.  Gastric Acid works by activating digestive enzymes in the stomach which help to break down food contents.

You can buy Hydrochloric acid on Amazon, it is also known as Muriatic Acid and is sometimes sold under that name too.

The stomach itself is protected from damage by a secretion of a thick layer of mucous and by a hormone called secretin which acts as a neutralising buffer.  Cells in the stomach and small intestine produce bicarbonate which also acts as a buffer and neutralises any potential damaging effects of the acid.

In some people, these mechanisms don’t work properly and they may suffer from indigestion, heartburn or have a peptic ulcer.  Such people may need the help of Antacids to neutralise the Gastric Acid in the stomach.

Hydrochloric Acid is a strong mineral acid.  It is highly corrosive and is used in a wide range of industrial processes.

Here are 10 uses of Hydrochloric Acid:-

  1. To ‘pickle’ steel.  This is a process whereby rust and scale is removed from steel sheet or coil with the use of a dilute solution of Hydrochloric Acid.  The metal can then be processed
  2. To manufacture organic compounds such as Vinyl Chloride and Dichloroethane which are used to produce PVC (Poly Vinyl Chloride)
  3. To regulate the pH level in a wide range of manufacturing and treatment processes including the production of drinking water, pharmaceuticals, beverages and foods
  4. In the processing of additives for the food industry including fructose, citric acid and hydrolyzed vegetable protein
  5. To produce inorganic compounds for water treatment including drinking water and waste water
  6. To neutralise the water in swimming pools making it safe for bathers
  7. To regenerate ion exchangers
  8. To process leathers in the tanning industry
  9. To purify common salt
  10. In North Sea oil production where it is used to facilitate oil well acidizing

Hydrochloric Acid varies in strength.  If you are working with this chemical you must read the MSDS provided by your Hydrochloric Acid supplier before starting a job.  Always wear PPE (Personal Protective Equipment) including approved eye protection, compatible safety gloves, safety boots and safety coveralls.  Concentrated Hydrochloric Acid should be handled under fume extraction.  This chemical is also known as Muriatic Acid or Spirits of Salt.  It is commonly referred to by its chemical formula HCl.

Rich Hudson
I'm Managing Director of a leading UK chemical supplier. My company supplies most of the chemicals I blog about, you can buy them online at Chemicals.co.uk. I also keep a personal blog at RichHudson.co.uk.
Rich Hudson
Rich Hudson
Rich Hudson

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  1. When acidity increases in stomach it affects the PH level an it depends on presence of HCL
    Well nice post very informative :)

  2. this site is cool

  3. How to recondition Fitter trade tools (Files) after a long use to increase the life by using hydrocloric acid. How much time the tools to be soaked in the solution and how to dilute it?

  4. We are planning to start recycling of Discarded CD and DVD s.Which acid we should mix with water to to clean the metallised layer of the CD.
    Kindly advise.

  5. cooOl..!! <3. :-) 😀

  6. We have a 22500litre water tank. The water is dirty. Can we add hydrochloric acid to it and if so what quantities.?

    • Add sodium hypochlorite and circulate with the help of a non metallic pumpfor 4 hours and allow to settle, again put sulphate of alumina in the powder form and circulate as mentioned above and allow to settle then check the pH. If it is normal then you can use the water.

    • benedikson says:

      Yes u can…..Add 500 litres of HCl in order to neutralize your water tank. :)

  7. Very informative. I got a question.:

    how to dilute 96% caustic flakes to 50% sodium hydroxide liquid. I want the procedure.


  8. Raghvendra says:

    i love this site.

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