El ácido palmítico, CAS 57-10-3, es un ácido graso saturado de cadena lineal perteneciente a la clase de los ácidos carboxílicos lipofílicos, con fórmula molecular C16H32O2 y peso molecular de 256,42 g/mol. Suele aparecer como componente de matrices lipídicas, producto de hidrólisis de triacilglicéridos o impureza residual de proceso en la fabricación oleoquímica y farmacéutica. Debido a su baja volatilidad y a su adsorción en superficies cromatográficas, su cuantificación suele requerir derivatización seguida de GC-MS o LC-MS/MS, mientras que GC-FID capilar también se emplea en el perfilado de ácidos grasos. Se evalúa principalmente como impureza composicional, no como preocupación genotóxica.
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