ISO 2051:1976

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Potassium chloride for industrial use — Determination of potassium content — Potassium tetraphenylborate gravimetric method

Published By	Publication Date	Number of Pages
ISO	1976-02	5

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Categories: 71.060.50 - Salts, ISO

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Description

The method is applicable to products having a minimum KCL content of about 95 % (m/m). The principle consists in dissolution of a test portion taken from the laboratory sample, previously ground and sifted. Addition of formaldehyde solution to transform any ammonium ions present into hexamethylenetetramine, and of ethylenedinitrilotetraacetic acid, disodium salt, to complex any extraneous cations present which could cause excess errors. These*additions in no case have a detrimental effect on its precision or reproducibility. Precipitation of the potassium by sodium tetraphenylborate in a weakly alkaline medium, drying and weighing of the precipitate.

Additional information

Published Code	ISO
Published By	International Organization for Standardization
Publication Date	1976-02
Pages Count	5
Language	English
Edition	1
File Size	276.5 KB
ICS Codes	71.060.50 - Salts

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ISO 2051:1976

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