Perfil de impurezas da N-metildietanolamina (CAS 139-87-7) concentra classes químicas críticas que afetam qualidade e segurança do insumo. São observados aminas secundárias e terciárias residuais | mono e polietilenoglicóis | álcoois voláteis | sais inorgânicos | traços de água e produtos de oxidação e desidrogenação. Essas impurezas alteram basicidade | viscosidade | ponto de ebulição e risco de corrosão | exigindo controle por cromatografia gasosa | GC-MS | HPLC | titulometria e Karl Fischer para água. Especificações típicas estabelecem limites por ppm e protocolos de purificação incluem destilação fracionada | tratamento iônico e antioxidantes. Monitoramento contínuo e validação analítica asseguram conformidade com especificações industriais.
Referências
Lemire, Sharon W., et al. “Quantitative Determination of the Hydrolysis Products of Nitrogen Mustards in Human Urine by Liquid Chromatography-Electrospray Ionization Tandem Mass Spectrometry*.†Journal of Analytical Toxicology, vol. 27, no. 1, Jan. 2003, pp. 1–6, https://doi.org/10.1093/jat/27.1.1.
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