- a green, crystalline, water-soluble powder, chromium ammonium sulfate, CrNH4(SO4)2⋅12H2O, used chiefly as a mordant in dyeing.
- a violet, crystalline, water-soluble powder, potassium chromium sulfate, CrK(SO4)2⋅12H2O, used chiefly as a mordant in dyeing.
- a violet-red crystalline substance, used as a mordant in dyeing. Formula: KCr(SO 4) 2 .12H 2 O
