ISO 2124:1972

$11.05

Sodium and potassium silicates for industrial use — Determination of silica content — Titrimetric method

Published By	Publication Date	Number of Pages
ISO	1972-06	4

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Categories: 71.060.50 - Salts, ISO

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Description

The principle consists in neutralization of the alkalinity of a test portion, previously dissolved, in presence of methyl red as indicator. Addition of sodium fluoride, which reacts with the silicic acid, forming a euaivalent quantity of sodium hydroxide. Addition of a measured volume of standard volumetric hydrochloric acid solution in excess, followed for diluting by ethanol. Filtration of the silicic compound thus obtained, which is insoluble under these conditions. Titration of the excess of hydrochloric acid in the filtrate with standard volumetric sodium hydroxide solution in presence of methyl red as indicator.

Additional information

Published Code	ISO
Published By	International Organization for Standardization
Publication Date	1972-06
Pages Count	4
Language	English
Edition	1
File Size	225.3 KB
ICS Codes	71.060.50 - Salts

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ISO 2124:1972

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