Image from page 166 of “The Journal of laboratory and clinical medicine” (1915)

Image from page 166 of “The Journal of laboratory and clinical medicine” (1915)
Acid Reflux
Identifier: journaloflaborat07cent
Title: The Journal of laboratory and clinical medicine
Year: 1915 (1910s)
Authors: Central Society for Clinical Research (U.S.)
Subjects: Biological Assay Diagnosis, Laboratory Disease Medicine Medicine Research
Publisher: St. Louis, C. V. Mosby
Contributing Library: Gerstein – University of Toronto
Digitizing Sponsor: University of Toronto

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Text Appearing Before Image:
I-:C0C00H 3-nitro-4-oxalyl-arsanilic acid

Text Appearing After Image:
3-nitroarsanili0acid whole heated to boiling under a reflux condenser for 1 hour. On cooling,.3-nitro-4-auiinophenylarsinic acid separates out in the form of long yellowsilky needles (Bertheim, 1911 ~). To obtain nitro oxy, dissolve 500 g. of thenitro-compound in aqueous potassium hydroxide (500 g. KOH in 1500 c.c.H2O), and heat the solution at 80° to 90° C. until the mixture becomes nearlysolid. Ice-cold water (2000 c.c.) and hydrochloric acid are added successively,the precipitate dissolved in hot water, and the filtered solution treated withsodium acetate (1 mol.) and animal charcoal. After this treatment, the mix-ture is again filtered and the filtrate made acid with hydrochloric acid whennitro oxy separates either in yelloAv rhombohedral plates or in tufts ofalmost colorless needles. 160 THE JOURNAL OF LABORATORY AND CLINICAL MEDICINE The formulas in Fig. 4 sIioav the course of the reactions described above: Nitro oxy is dimorphous in character, crystallizing in the form of yel

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