fán
白矾
alum; potassium aluminum sulfate
Tone colorsmāmámǎmàma
Meanings
1 sense · 3 examplesnoun
alum (common name for potassium alum)
technicalA specific chemical compound (potassium aluminum sulfate dodecahydrate, KAl(SO₄)₂·12H₂O), used historically in water purification, dyeing, leather tanning, baking powder, and as an astringent in medicine. Often called 明矾 (míngfán).
Chuán传
tǒng统
shang上
，
rén人
men们
yòng用
bái白
fán矾
lái来
jìng净
huà化
yǐn饮
yòng用
shuǐ水
。
Traditionally, people used alum to purify drinking water.
Zhè这
zhǒng种
rǎn染
liào料
xū需
yào要
jiā加
yī一
diǎn点
fán矾
lái来
gù固
sè色
。
This dye requires adding a bit of alum to fix the color.
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Míng明
fán矾
shì是
zhì制
zuò作
yóu油
tiáo条
cháng常
yòng用
de的
tiān添
jiā加
jì剂
。
Alum is a common additive used in making fried dough sticks (youtiao).