Spectrophotometric Titration of Primary Aliphatic Amides.

Abstract

gas oils has been reported (1). Their concentration probably never exceeds 1 to 2% weight, and could be corrected for by an independent determination of total oxygen (as in the case of nitrogen compounds). The standard deviation of this method is estimated at ±1 to 2% weight for each class reported, on the basis of multiple determination for several of the samples of Table IV. Linearity in the routine separation was checked for several samples; the recommended sample sizes are less than half the amount necessary to produce appreciable dependence of the analysis results on sample size.

Amperometric Titration of Primary Amides.

“…The solution was standardized iodometrically. No change in titer was evident over a 1-month period, in contrast to that evident with the more dilute solution used previously (2).…”

“…28, 792 (1956). (2) Fritz, J. S., "Acid-Base Titrations in Nonaqueous Solvents," G. Frederick Smith Chemical Co., Columbus, Ohio, 1952. of Primary Amides aqueous HC1 so that the final solution was ~1 M in HC1 and 20% dioxane.…”

Spectrophotometric determination of water soluble organic amides

“…Post and Reynolds have shown that the halogen oxidation of amides occurs over a wide pH range (6,7). For this reason, the initial experimental work on this procedure was a study of reaction variables involved in the determination.…”

“…A 3,5-dinitrobenzoyl chloride reaction procedure has been used to determine a variety of primary amides, but it is not applicable to trace concentrations of amides in aqueous solution (5). Spectrophotometric and amperometric titrations employing hypobromite and hypochlorite ions, respectively, have been applied to the determination of primary aliphatic amides (6,7). Gas chromatography has been used to determine all three classes of amides (8).…”

Determination of Imides, Aromatic, Polyimides, Polyamides, and Poly (Amide-Imides) by Alkali Fusion Reaction Gas Chromatography

“…Diacetamide, for example, was titrated at 94 °C in liquid acetamide using sodium acetamide as the titrant (14). Succinimide can be titrated with hypobromite; the excess hypobromite present after the end point is determined colorimetrically at 350 nm (15) . Indirect procedures for the determination of saccharin (16) and sodium saccharin (17) are based on the formation of their insoluble silver and mercury salts and titration of the excess Ag(I) and Hg(II) with thiocyanate.…”