Acid

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A substance that yields hydrogen (H+) ions when added to a solution. Acids typically have a corrosive effect on many substances. The acidity of a solution is described in terms of pH, a …

Acid Dye

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A variety of colorant comprising salts of organic acids, used in the screen printing of textiles.

Acid Number

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A unit used to measure the amount of potassium hydroxide (chemical formula KOH) needed to neutralize the freeacids found in oils, waxes, or resins. A high degree of acidity is undesirable …

Acid Paper

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A type of paper that is slightly acidic. Most paper is acid paper, since it is produced using bleaching agents, sizingmaterials (in particular, acid-rosin sizing, which is the chemical that, although …

Acidity

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The extent to which a solution is an acid. See Acid and pH.