fan2
alum

strokes 20
radical
strokes after radical 15
白矾 白礬 bai2 fan2
alum

铝矾土 鋁礬土 lv3 fan2 tu3
bauxite; aluminum ore

绿矾 綠礬 lv4 fan2
green vitriol (ferrous sulfate FeSO4:7H2O)

明矾 明礬 ming2 fan2
alum

皂矾 皂礬 zao4 fan2
green vitriol (ferrous sulfate FeSO4:7H2O)