🌐EnglishEnglishDeutschNederlandsPolskiРусскийفارسی中文日本語EntityQ410634· pop 14· linked from 19 articlesacetylenedicarboxylic acidchemical compoundAvailable in 13 languagesDeutsch中文日本語РусскийazbAzerbaijaniHungarianNederlandsPolskiSerbianConnectionsoxygenEntitycopperEntityCategoriesAlkynoic acidsChembox having GHS dataChembox image size setChemical articles with multiple compound IDsDicarboxylic acidsECHA InfoCard ID from WikidataGHS warningsMultiple chemicals in an infobox that need indexingSubstances discovered in the 19th century