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2. Pickling (metal) - Wikipedia

   en.wikipedia.org/wiki/Pickling_(metal)

   A diluted sulfuric acid pickling bath is traditionally used, [6] but may be replaced with citric acid. Sheet steel that undergoes acid pickling will oxidize (rust) when exposed to atmospheric conditions of moderately high humidity. For this reason, a thin film of oil or similar waterproof coating is applied to create a barrier to moisture in ...

3. Flux (metallurgy) - Wikipedia

   en.wikipedia.org/wiki/Flux_(metallurgy)

   [citation needed] The metal ions, more noble than aluminium, then undergo a redox reaction, dissolve the surface layer of aluminium and form a deposit there. This intermediate layer of another metal then can be wetted with a solder. One example of such flux is a composition of triethanolamine, fluoroboric acid, and cadmium fluoroborate. More ...

4. Hydrochloric acid - Wikipedia

   en.wikipedia.org/wiki/Hydrochloric_acid

   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. It is classified as a strong acid. It is a component of the gastric acid in the digestive systems of most animal species, including humans.

5. List of alchemical substances - Wikipedia

   en.wikipedia.org/wiki/List_of_alchemical_substances

   Milk of sulfur (lac sulphuris) – formed by adding an acid to thion hudor (lime sulfur). Natron/soda ash/soda – sodium carbonate. Na 2 CO 3; Nitrum flammans – ammonium nitrate. Sugar of lead – lead(II) acetate, formed by dissolving lead oxide in vinegar. Thion hudor – lime sulfur, formed by boiling flowers of sulfur with slaked lime.

6. Bluing (steel) - Wikipedia

   en.wikipedia.org/wiki/Bluing_(steel)

   Fume bluing is another process similar to rust bluing. Instead of applying the acid solution directly to the metal parts, the parts are placed in a sealed cabinet with a moisture source, a container of nitric acid and a container of hydrochloric acid. The mixed fumes of the acids produce a uniform rust on the surface of the parts (inside and ...

7. Chemical drain cleaners - Wikipedia

   en.wikipedia.org/wiki/Chemical_drain_cleaners

   Limited piping systems gradually developed with lead materials, but after WWI when the poisonous properties of lead became more well-known, piping was reconstructed with galvanized iron. Galvanized iron is actually steel covered in a protective layer of zinc, but it was soon discovered that this zinc layer naturally corroded due to exposure to ...

8. List of additives used for fracking - Wikipedia

   en.wikipedia.org/wiki/List_of_additives_used_for...

   Hydrochloric Acid / Hydrogen Chloride / muriatic acid: Toilet Bowl Cleaner 7722-84-1: Hydrogen peroxide: Oxidizer, Polymer Breaker 79-14-1: Hydroxy acetic acid: 35249-89-9: Hydroxyacetic acid ammonium salt: 9004-62-0: Hydroxyethyl cellulose: Viscosifier 5470-11-1: Hydroxylamine hydrochloride: 39421-75-5: Hydroxypropyl guar: Viscosifier 35674-56-7

9. Galvanization - Wikipedia

   en.wikipedia.org/wiki/Galvanization

   This is the most common use for galvanized metal; hundreds of thousands of tons of steel products are galvanized annually worldwide. In developed countries, most larger cities have several galvanizing factories, and many items of steel manufacture are galvanized for protection.