Sodium fluoride primarily used for the production of aluminium — Determination of chlorides content — Turbidimetric method

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English, French

Published date

01-04-1976

Publisher

International Organization for Standardization

Applicable to products having a chlorides content, expressed as chlorine, of equal to or more than 0.005 % (m/m). The principle consists in precipitation, in the presence of boric acid, of chloride ions with silver nitrate. Comparison of the opalescence of the test solution with that of standard matching solutions using Nessler tubes against a black background. Turbidimetric evaluation of the mass of precipitate.

DevelopmentNote	Also numbered as BS 5072-8(1980). (07/2005)
DocumentType	Standard
Pages	2
PublisherName	International Organization for Standardization
Status	Current

Standards	Relationship
NBN T 03 468 : 1983	Identical
NFT 20 151 : 84 FD	Identical

ISO/TR 4277:2009	Cryolite, natural and artificial Conventional test for evaluation of free fluorides content
PD ISO/TR 4277:2009	Cryolite, natural and artificial. Conventional test for evaluation of free fluorides content