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propionic acid [propionic acids]▼◼◼◼noun[UK: ˌpropi.ˈɑː.nɪk ˈæ.sɪd] [US: ˌpropi.ˈɑː.nɪk ˈæ.səd]
propanoic acid▼◼◼◼noun[UK: prˈəʊpənˈəʊɪk ˈasɪd] [US: prˈoʊpənˈoʊɪk ˈæsɪd]
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