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ammonium chrome alum

 - 2 dictionary results

chrome alum

–noun
1. Also called ammonium chrome alum, ammonium chromic sulfate. 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.
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Based on the Random House Dictionary, © Random House, Inc. 2009.
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