ISO 3431:1976
Sodium fluoride primarily used for the production of aluminium — Determination of soluble sulphates content — Turbidimetric method
OVERVIEW
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.
COMMENTS
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PRODUCT DETAILS
| Status | Current |
|---|---|
| Edition | 1976 |
| No. of Pages | 3 |
| ICS Classification | 71.100.10 Materials for aluminium production |
| Committee | ISO/TC 226 |
| Available for Purchase | For sale in Singapore only |
| Adoption | ISO |