Read Edit View history 草酸 cǎosuān oxalic acid Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 草酸 · cǎosuān · oxalic acid 2026/03/04 草酸 cǎosuān oxalic acid oxalic acid C2H2O4 草酸常用于工业除锈。 noun created sense Mar 4, 2026, 02:25 AM