Impureza de Anidrido Subérico (CAS 10521-06-9) geralmente aparece como níveis residuais de mono e diácidos correlatos | anidridos parcialmente hidrolisados | oligômeros e vestígios de solventes e impurezas inorgânicas. Estas impurezas alteram cor | ponto de fusão | acidez e estabilidade térmica | comprometendo parâmetros de processo e qualidade final. O perfil é caracterizado por técnicas analíticas como GC | HPLC | RMN 1H/13C | FTIR e titulação de acidez | com especificações típicas inferiores a 0 | 1% ou conforme requisito do cliente. Controle por secagem | destilação a vácuo | recristalização e tratamento dessecante reduz níveis | além de armazenamento anidro para minimizar hidrólise.
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