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Nitrogen content extracts

To obtain the free base, 34 g (0.256 mol) of N-ethyl-3-piperidinol and 20 g (0.22 mol) of diphenylacetyl chloride were mixed in 80 cc of isopropanol and the solution was refluxed for 2 hours. The isopropanol was evaporated in vacuo at 30 mm pressure, the residue was dissolved in 150 cc of water and the aqueous solution was extracted several times with ether. The aqueous solution was then neutralized with potassium carbonate and extracted with ether. The ethereal solution was dried over anhydrous potassium carbonate and the ether removed by distillation. The product was then distilled at its boiling point 180° to 181°C at 0.13 mm of mercury whereby 14 g of a clear yellow, viscous liquid was obtained. The nitrogen content for CjiHjjNOj was calculated as 4.33% and the nitrogen content found was 4.21%. [Pg.1246]

In a Friedel-Crafts reaction, the chloride was treated with dimethyl-aniline in the presence of aluminum chloride. Nitrobenzene was used as solvent. After exhaustive extraction, the nitrogen content was equimolar to the former chloride content. No NaHCOj was neutralized by the reaction product the other neutralization values decreased correspondingly. [Pg.197]

The acyl chloride was treated with a solution of sodium azide in ethanol. The nitrogen content of the extracted substance was equimolar to the initial chloride content, which was hydrolyzed easily. The reaction stopped at the urethane stage ... [Pg.198]

Examination of the standardized correlation coefficients Indicated that bornyl acetate, the unidentified terpene, total nitrogen content, and beta-plnene were the most important variables In determining female adult dry weight. It Is Interesting to note that once more protein complexlng capacity of the extract was not Important In determining female dry weight. [Pg.10]

In other experiments, the opposite method of fractionation by dissolution was applied. In this way G. Meissner [107] prepared a soluble fraction with a nitrogen content of 10.28%, in quantity about 4% by extracting a specimen of nitrocellulose with 12.17% N using 50 50 ether-alcohol. The insoluble part was composed of nitrocellulose of 12.32% N. [Pg.279]

Nitrocellulose has also been extracted with alcohol, the residue then being treated with a mixture of ether and ethanol (60 40 by volume, Berl and Hefter [108]). Three fractions were isolated the first soluble in alcohol, the second soluble in ether-alcohol, and the third an insoluble residue. The fractions differed in nitrogen content. The lowest nitrogen content was found in the first fraction and the highest in the third fraction (Table 58). [Pg.279]

A range of nitrocotton samples containing from 11.3 to 13.1% N, and nitro-ramie of 10% N prepared by denitrating nitroramie of 13% N by acting with nitric acid 80%, have been fractionated by G. G. Jones and Miles [HO] by a method of successive extraction with aqueous acetone every subsequent solvent was richer in acetone than the preceding one. They demonstrated that particular fractions differed in nitrogen content and viscosity. [Pg.280]

The change of nitrogen content as the extraction proceeded is showed in Fig. 106. From their collected results Jones and Miles have constructed a graph (Fig. 107)... [Pg.280]

Fig. 106. Nitrogen contents of extracted nitrocellulose fractions according to G. G. Jones and Miles [16a] CO HH nitrocellulose, 12.20% N, high viscosity, unkiered (II) HX nitrocellulose, 12.26% N, low viscosity (III) HX nitrocellulose, 12.07% N, low viscosity (IV) Guncotton, unkiered, 13.14% N (V) Guncotton, kiered, 12.95% N (VI) Guncotton, kiered, 12.93% N (VII) Pyro nitrocellulose, 12.70% N (VUI) Nitro-woodpulp, 11.30% N (IX) Nitroramie (73.5% soluble... Fig. 106. Nitrogen contents of extracted nitrocellulose fractions according to G. G. Jones and Miles [16a] CO HH nitrocellulose, 12.20% N, high viscosity, unkiered (II) HX nitrocellulose, 12.26% N, low viscosity (III) HX nitrocellulose, 12.07% N, low viscosity (IV) Guncotton, unkiered, 13.14% N (V) Guncotton, kiered, 12.95% N (VI) Guncotton, kiered, 12.93% N (VII) Pyro nitrocellulose, 12.70% N (VUI) Nitro-woodpulp, 11.30% N (IX) Nitroramie (73.5% soluble...
Over the past 30 years, extensive research has been carried out to find ways to detect the adulteration of fruit juices. The approaches have developed from simple procedures, such as measuring the potassium and nitrogen contents of juices, to the use of highly sophisticated and expensive equipment to detect the most recent approaches that unscrupulous suppliers may be using to extend their products. Such adulteration often involves the substitution of some of the fruit juice solids by sugars derived from beet, cane, com or inulin, or the addition of cheaper juices or second extracts of the fruit. [Pg.270]

The elemental analysis of the Rasa coal extract appears in Table III, along with the values for the coal. The elemental analyses of the coal and of the extract are similar. This is consistent with the extract being representative of the organic matter in the coal. The nitrogen content of the extract is... [Pg.274]

HC1 Treating. The 1000°F— distillate fractions of the filtered liquid products from Experiments 3, 4, and 6 in Table V, upon saturation at ambient temperature and pressure with dry HC1 gas, formed small amounts of dense, black liquid precipitates in each case (Table VII). A selective precipitation of nitrogen compounds took place as evidenced by the reduced nitrogen content in the raffinate phases and the increased nitrogen levels in the HC1 extract phases. Of the nitrogen originally present in the distillate samples, the bulk remained in the raffinates, while minor proportions appeared in the extract phases and as water-soluble material. The possibility that solubility of the amine hydrochloride in the... [Pg.103]

The tests were conducted for a 3-day period. Gas products were taken and analyzed by mass spectrometry (MS). Daily liquid samples were taken and their nitrogen contents were determined. The liquid product taken at the end of the test period was characterized by elemental analysis, distillation, and benzene extraction. A representative sample of the spent catalyst was obtained by rifling, then washing with benzene. Its carbon content was determined. [Pg.198]


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