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  2. Stain removal - Wikipedia

    en.wikipedia.org/wiki/Stain_removal

    Boiling water This can be used to take out fruit juice stains. Hot water activates the detergent and as well as sanitize the cloth. It works best on protein-based stains. [9] Lukewarm water Water is an excellent solvent for colorless sugary stains, such as sticky residues of dropped candy as well as apple jam and honey. [citation needed]

  3. List of alchemical substances - Wikipedia

    en.wikipedia.org/wiki/List_of_alchemical_substances

    The crust formed on the lid was ground to powder and boiled with water to remove the calomel. Calx – calcium oxide; was also used to refer to other metal oxides. Chalcanthum – the residue produced by strongly roasting blue vitriol (copper sulfate); it is composed mostly of cupric oxide. Chalk – a rock composed of porous biogenic calcium ...

  4. Four thieves vinegar - Wikipedia

    en.wikipedia.org/wiki/Four_thieves_vinegar

    Vinaigre des quatre voleurs. Four thieves vinegar (also called thieves’ oil, Marseilles vinegar, Marseille's Remedy, prophylactic vinegar, vinegar of the four thieves, camphorated acetic acid, vinaigre des quatre voleurs and acetum quator furum [1] [2]) is a concoction of vinegar (either from red wine, white wine, cider, or distilled white) infused with herbs, spices or garlic that was ...

  5. Mercury (II) acetate - Wikipedia

    en.wikipedia.org/wiki/Mercury(II)_acetate

    Mercury(II) acetate, also known as mercuric acetate is a chemical compound, the mercury(II) salt of acetic acid, with the formula Hg(O 2 CCH 3) 2.Commonly abbreviated Hg(OAc) 2, this compound is employed as a reagent to generate organomercury compounds from unsaturated organic precursors.

  6. Concrete degradation - Wikipedia

    en.wikipedia.org/wiki/Concrete_degradation

    When atmospheric carbon dioxide (CO 2), or carbonate ions (HCO − 3, CO 2− 3 dissolved in water) diffuse into concrete from its external surface, they react with calcium hydroxide (portlandite, Ca(OH) 2) and the pH of the concrete pore water progressively decreases from 13.5 – 12.5 to 8.5 (pH of water in equilibrium with calcite).

  7. Aqueous solution - Wikipedia

    en.wikipedia.org/wiki/Aqueous_solution

    [1] [2] As water is an excellent solvent and is also naturally abundant, it is a ubiquitous solvent in chemistry. Since water is frequently used as the solvent in experiments, the word solution refers to an aqueous solution, unless the solvent is specified. [3] [4] A non-aqueous solution is a solution in which the solvent is a liquid, but is ...

  8. Mercury(II) chloride - Wikipedia

    en.wikipedia.org/wiki/Mercury(II)_chloride

    The process was generally abandoned because mercuric chloride was water-soluble and not effective for the long term, as well as being highly poisonous. Furthermore, alternative treatment processes, such as copper sulfate, zinc chloride, and ultimately creosote; were found to be less toxic. Limited kyanizing was used for some railroad ties in ...

  9. Sodium nitrate - Wikipedia

    en.wikipedia.org/wiki/Sodium_nitrate

    Sodium nitrate is a white deliquescent solid very soluble in water. It is a readily available source of the nitrate anion (NO 3 − ), which is useful in several reactions carried out on industrial scales for the production of fertilizers , pyrotechnics , smoke bombs and other explosives , glass and pottery enamels , food preservatives (esp ...

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