CaltechAUTHORS
  A Caltech Library Service

Amphoteric behavior of complex systems. IV. Note on the isoelectric point and ionization constants of sulfanilic acid

Stearn, Allen E. (1927) Amphoteric behavior of complex systems. IV. Note on the isoelectric point and ionization constants of sulfanilic acid. Journal of General Physiology, 10 (3). pp. 379-383. ISSN 0022-1295. http://resolver.caltech.edu/CaltechAUTHORS:STEjgp27a

[img]
Preview
PDF - Published Version
Creative Commons Attribution Non-commercial Share Alike.

235Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:STEjgp27a

Abstract

From the solubility minimum the value of the basic ionization constant of sulfanilic acid is shown to lie probably between the values 1.7 x 10^–15 and 3.2 x 10^–15. From solubility measurements the value of this same constant is shown to lie probably between 2.0 and 2.2 x 10^–15, and the isoelectric point of sulfanilic acid is thus at a cH of 0.056 or a pH of 1.25. From conductivity ratios the acid ionization constant of sulfanilic acid is shown to be 7.05 x 10^–4 at room temperature (21°C.). Calculations are made, from data published in preceding papers, of the ionization constants of glycine, Ka being 2.3 x 10^–10, and Kb being 2.2 x 10^–12.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://jgp.rupress.org/cgi/content/abstract/10/3/379PublisherUNSPECIFIED
Additional Information:Copyright © 1927 by The Rockefeller University Press. RUP grants the public the non-exclusive right to copy, distribute, or display the Work under a Creative Commons Attribution–Noncommercial–Share Alike 3.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/3.0/ and http://creativecommons.org/licenses/by-nc-sa/3.0/legalcode. Accepted on July 26, 1926. Contributions from the Gates Chemical Laboratory, California Institute of Technology, No. 118.
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Gates Chemical Laboratory118
Record Number:CaltechAUTHORS:STEjgp27a
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:STEjgp27a
Usage Policy:RUP grants the public the non-exclusive right to copy, distribute, or display the Work under a Creative Commons Attribution–Noncommercial–Share Alike 3.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/3.0/ and http://creativecommons.org/licenses/by-nc-sa/3.0/legalcode.
ID Code:12371
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:14 Nov 2008 05:48
Last Modified:26 Dec 2012 10:31

Repository Staff Only: item control page