Ácido acético (CAS 64-19-7) como impureza aparece com frequência em solventes | reagentes e matérias primas | afetando estabilidade | pH e a corrosividade de sistemas de processo. Em níveis traço | de ppm a porcentagens | promove hidrólise de ésteres | polimerização indesejada e desativação de catalisadores ácidos ou básicos | além de causar odor e alterações analíticas. A quantificação recorre a titulação ácido-base | cromatografia gasosa | HPLC e espectroscopia FTIR | com água determinada por Karl Fischer. Estratégias de controle incluem destilação fracionada | remoção por troca iônica | adsorção em carvão ativado e neutralização controlada. Especificações rigorosas e monitoramento em lote são essenciais para minimizar degradação de produto e corrosão de equipamentos.
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