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An improved method for analysis of hydroxide and carbonate in alkaline electrolytes containing zincA simplified method for titration of carbonate and hydroxide in alkaline battery electrolyte is presented involving a saturated KSCN solution as a complexing agent for zinc. Both hydroxide and carbonate can be determined in one titration, and the complexing reagent is readily prepared. Since the pH at the end point is shifted from 8.3 to 7.9 - 8.0, m-cresol purple or phenol red are used as indicators rather than phenolphthalein. Bromcresol green is recommended for determination of the second end point of a pH of 4.3 to 4.4.
Document ID
19780020664
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Reid, M. A. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
January 1, 1978
Subject Category
Energy Production And Conversion
Report/Patent Number
NASA-TM-78961
Meeting Information
Meeting: Meeting of the Electrochem. Soc., Inc.
Location: Pittsburgh
Start Date: October 15, 1978
End Date: October 20, 1978
Accession Number
78N28607
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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