丁酸

dīngsuān

noun

Meanings

1 butyric acid
2 butanoic acid

Characters

4th heavenly stem (= C4)

Examples

HSK 7-9

黄油变质后会产生丁酸的臭味。

Huángyóu biànzhì hòu huì chǎnshēng dīngsuān de chòuwèi.

Spoiled butter gives off the stink of butyric acid.

HSK 7-9

丁酸在肠道里由益生菌代谢产生。

Dīngsuān zài chángdào lǐ yóu yì shēng jūn dàixiè chǎnshēng.

Butyric acid is produced in the gut by probiotic bacteria.

Tips

usage

Chinese names the short-chain carboxylic acids with heavenly-stem ordinals: 甲酸 formic (C1), 乙酸 acetic (C2), 丙酸 propionic (C3), 丁酸 butyric (C4), 戊酸 valeric (C5). Learn the series, not the individual words.

Stroke Order

丁 dīng

酸 suān