Home›Chembox having GHS data›均苯四甲酸二酐🌐中文EnglishDeutschNederlandsPolski中文EntityQ1407366· pop 8· linked from 7 articles均苯四甲酸二酐Also known as PMDA, pyromellitic acid anhydride, pyromellitic anhydride, 1,2,4,5-benzenetetracarboxylic anhydride化合物Wikidata factsMass217.985Show 3 more factsCommons categoryPyromellitic dianhydridechemical formulaC₁₀H₂O₆canonical SMILESC1=C2C(=CC3=C1C(=O)OC3=O)C(=O)OC2=OSources (3)wikidata.orgcommonchemistry.cas.orgdocs.openalex.orgvia Wikidata · CC0Available in 7 languagesDeutsch中文CzechFinnishNederlandsTamilvia Wikidata sitelinks · CC0ConnectionsInternational Standard Book NumberEntitymass densityEntityCategoriesChembox having GHS dataECHA InfoCard ID from WikidataPhthalic anhydrides