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Hydrolyze Acetylsalicylic Acid into Salicylic Acid
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50gm ASA
33.5gm NaOH
150ml water
Filter
Add conc. HCl to taste (~150ml)
Filter
Wash, rinse & repeat.
Dry
2 things
1.) You don't need to separate the ASA from tablets.
2.) Stir NaOH slowly!
(a) CH3COO-C6H4-COOH + NaOH → CH3COO-C6H4-COONa + H2O
(b) CH3COO-C6H4-COONa + NaOH → HO-C6H4-COONa + CH3COONa
(c) HO-C6H4-COONa + NaOH → NaO-C6H4-COONa + H2O
(d) NaO-C6H4-COONa + 2 HCl → HO-C6H4-COOH + 2 NaCl
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