chrome alum

[ krohm-al-uhm ]

noun
  1. Also called ammonium chrome alum; am·mo·ni·um chro·mic sul·fate [uh-moh-nee-uhm kroh-mik suhl-feyt] /əˈmoʊ ni əm ˈkroʊ mɪk ˈsʌl feɪt/ . a green, crystalline, water-soluble powder, chromium ammonium sulfate, CrNH4(SO4)2⋅12H2O, used chiefly as a mordant in dyeing.

  2. a violet, crystalline, water-soluble powder, potassium chromium sulfate, CrK(SO4)2⋅12H2O, used chiefly as a mordant in dyeing.

Words Nearby chrome alum

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use chrome alum in a sentence

  • This liquor has a greater plumping effect on the leather than the chrome alum liquor has.

    Leather | K. J. Adcock
  • A favourite mixture consists of chrome alum and sodium carbonate (common soda).

    Leather | K. J. Adcock
  • To illustrate the matter, the case of a basic chrome alum liquor will be considered.

    Animal Proteins | Hugh Garner Bennett
  • Of the first type the most common is that in which chrome alum (a bye-product of the dyeing industry) is the starting-point.

    Animal Proteins | Hugh Garner Bennett
  • The disadvantage of this liquor is the limited solubility of chrome alum and the need for its solution in the cold.

    Animal Proteins | Hugh Garner Bennett

British Dictionary definitions for chrome alum

chrome alum

noun
  1. a violet-red crystalline substance, used as a mordant in dyeing. Formula: KCr(SO 4) 2 .12H 2 O

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012