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Hydrated chromium potassium sulfate, CrK(SO4)2·12H2O, a toxic violet-red to black crystalline compound, used in tanning, as a mordant, and in photography.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Elements & Compounds) a violet-red crystalline substance, used as a mordant in dyeing. Formula: KCr(SO4)2.12H2O
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a violet powder, CrK(SO4)2∙12H2O, used in photography, in tanning, and as a mordant in dyeing.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||chrome alum - a violet-colored salt used in hide tanning and as a mordant in dyeing|
mordant - a substance used to treat leather or other materials before dyeing; aids in dyeing process
salt - a compound formed by replacing hydrogen in an acid by a metal (or a radical that acts like a metal)
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