Chrome-alum
noun
1.
Also called ammonium chrome alum, ammonium chromic sulfate. a green, crystalline, water-soluble powder, chromium ammonium sulfate, CrNH 4 (SO 4) 2 ⋅12H 2 O, used chiefly as a mordant in dyeing.
2.
a violet, crystalline, water-soluble powder, potassium chromium sulfate, CrK(SO 4) 2 ⋅12H 2 O, used chiefly as a mordant in dyeing.
noun
1.
a violet-red crystalline substance, used as a mordant in dyeing. Formula: KCr(SO4)2.12H2O
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