Common Names of Carboxylic Acids

Ever wondered why ‘formic acid’ is so-called? Or montanic acid? Or melissic acid? This handy A3 poster shows you the Latin/Greek/Persian origins of each of the carboxylic acids’ common names from ‘formic acid’ (no. 1) to ‘hexatriacontylic acid’ (no. 36). Each acid comes with a cute graphical description of where its name comes from.

Common Names of Carboxylic Acids
Click to enlarge

There are some interesting origin stories behind each of these names. Formic acid, for example, is found in insect stings (hence the name). Palmitic acid is found in palm trees (hence the name), and myristic acid is found in nutmeg.

Three of the carboxylic acids are named after goats: caproic acid, caprylic acid and capric acid. Together, these three molecules comprise 15% of the fatty acids found in goats’ milk, and many reports also suggest that they smell ‘goat-like’!

Many of the odd-numbered higher carboxylic acids are rarer in nature and thus didn’t earn a common name until recently. Undecylic acid, for example, which has eleven carbon atoms in its backbone, is named simply after the Greek word for ‘eleven’.

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