Diethylenetriamine (CAS 111-40-0) as an impurity presents strong basicity, hygroscopicity, and low molecular weight that can alter downstream product stability and performance. Even trace levels contribute to increased amine number, color formation, and accelerated curing in sensitive formulations, and may promote corrosion of metal components. Detection and quantification typically rely on GC with nitrogen chemiluminescence or FID after derivatization, LC-MS, or ion chromatography combined with titrimetric assays. Control measures include fractional distillation, vacuum stripping, selective adsorption, and stringent supplier screening with defined acceptance criteria and certificate of analysis limits. Robust monitoring prevents regulatory and quality deviations in finished goods.
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