鞣酸 (róusuān): tannic acid

Meanings

1 tannic acid
2 tannin

Characters

鞣

Examples

茶叶里含有大量鞣酸。

Cháyè lǐ hányǒu dàliàng róusuān.

Tea leaves contain a large amount of tannic acid.

鞣酸可以用来鞣制皮革。

Róusuān kěyǐ yònglái róuzhì pígé.

Tannic acid can be used to tan leather.

Tips

memory

鞣 (róu) literally means 'to tan leather' — the 革 (leather) radical on the left is the giveaway. So 鞣酸 = 'leather-tanning acid' = tannin. Same chemical that makes strong tea taste astringent.

Stroke Order

鞣 róu

酸 suān

Related Words

半必需氨基酸 bànbìxūānjīsuān

semi-essential amino acid / conditionally essential amino acid

冰醋酸 bīngcùsuān

glacial acetic acid (concentrated, water-free acetic acid)

丁酸 dīngsuān

butyric acid / butanoic acid

己酸 jǐsuān

hexanoic acid; caproic acid

天门冬氨酸 tiānméndōng'ānsuān

aspartic acid (Asp / D) / a non-essential amino acid, also a building block of aspartame

亚麻酸 yàmásuān

linolenic acid / alpha-linolenic acid (ALA)

棕榈酸 zōnglǘsuān

palmitic acid (C16:0) / a saturated fatty acid abundant in palm oil

铅酸蓄电池 qiānsuānxùdiànchí

lead-acid battery / lead-acid accumulator (e.g. car battery)

羟基丁酸 qiǎngjīdīngsuān

hydroxybutyric acid / GHB (gamma-hydroxybutyric acid)

谷氨酸 gǔ'ānsuān #48,785

glutamic acid (Glu) / glutamate (the amino acid)