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ISO 3431:1976

ISO 3431:1976

Current

Current

The latest, up-to-date edition.

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

Available format(s)

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

Language(s)

English, French

Published date

01-07-1976

Publisher

International Organization for Standardization

Applicable to products having SO4 contents of more than 0.05 % (m/m). Covers the dissolution of the test portion in hydrochloric acid and evaporation in hydrochloric acid solution for drying. Dissolution of the residue in a hydrochloric acid solution. Measurement of the turbidity obtained by precipitation, under specified conditions, of barium sulphate using a spectrophotometer at a wavelength of about 470 nm or a photoelectric absorptiometer.

DevelopmentNote
Also numbered as BS 5072-7(1980). (07/2005)
DocumentType
Standard
Pages
3
PublisherName
International Organization for Standardization
Status
Current

Standards Relationship
NBN T 03 467 : 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
BS 3484(1991) : 1991 AMD 8071 SPECIFICATION FOR BLUE BLACK RECORD INKS

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Hardcopy - English
PDF - English
PDF 3 Users - English
PDF 5 Users - English
PDF 9 Users - English
Hardcopy - French
PDF - French
PDF 3 Users - French
PDF 5 Users - French
PDF 9 Users - French
Hardcopy - English
PDF - English
PDF 3 Users - English
PDF 5 Users - English
PDF 9 Users - English
Hardcopy - French
PDF - French
PDF 3 Users - French
PDF 5 Users - French
PDF 9 Users - French
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