N,N-Diethylaniline
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This article is compiled based on the United States Pharmacopeia (USP) – 2025 Edition
Issued and maintained by the United States Pharmacopeial Convention (USP)
C6H5N(C2H5)2 149.23 CAS RN®: 91-66-7.-Light yellow to amber liquid.
Assay: Inject an appropriate specimen (about 0.2 µL) into a suitable gas chromatograph (see Chromatography (621)) equipped with a flame-ionization detector, helium being used as the carrier gas flowing at about 40 mL per minute. The following conditions have been found suitable: a 3-mm x 1.8-m stainless steel column containing 20% phase G16 on support S1A; the injection port temperature is maintained at 250°; the column temperature is maintained at 140° and programmed to rise 6° per minute to 200°. The detector temperature is maintained at 310°. The area of the N,N-diethylaniline peak having a retention time of about 4.9 minutes is not less than 99% of the total peak area.
REFRACTIVE INDEX (831): between 1.5405 and 1.5425 at 20°.
