皂矾

Traditional form:

皂礬

Pinyin (reading):

zàofán

Definitions:

• green vitriol (ferrous sulfate FeSO4:7H2O)

Characters:

• 皂 - soap; black; menial servant
• 矾 - alum

Traditional characters:

• 皂 - soap; black; menial servant
• 礬 - alum