Nws yog ib qho tseem ceeb nruab nrab hauv kev sib xyaw ntawm cov tshuaj antipyretic thiab analgesic. Nws yog ib tug dawb mus rau quasi-dawb crystalline hmoov nrog melting point ntawm 96 ~ 100âº
Tau txais los ntawm bromination thiab hydrolysis ntawm phenol. Thaum tshav kub kub phthalein rau 140-145â, bromine cov tshuaj tiv thaiv, tswj lub inlet ceev, thiaj li hais tias cov tshuaj tiv thaiv tail gas yeej tsis muaj bromine vapor paug. Tom qab tshem tawm cov bromine, cov seem hydrogen bromide raug tshem tawm los ntawm cov pa roj carbon dioxide thiab decompression ntawm 120⺠chemical phau ntawv. Cov reactants tau hydrolyzed nrog dej rau 0.5h nyob rau hauv boiling dej da dej. O-carboxyl benzaldehyde tau precipitated tom qab txias. Yield ntawm 60%.
