ISO 1694:1976
ISO 1694:1976 Cryolite, natural and artificial – Determination of iron content – 1,10- Phenanthroline photometric method
CDN $85.00
Description
Applies for the determination of natural and synthetic materials having a molar ratio sodium fluoride/aluminium trifluoride between 3 and 1,7 approximately. The method is applicable to products having an iron content equal to or greater than 0,020 % (m/m). The principle consists in dissolution of a test portion by either alkaline or acid fusion. Reduction of iron(III) with hydroxylammonium chloride, formation of the complex iron(II)-1, 10-phenathroline in a buffered medium at pH value between 3,5 and 4,2. Photometric measurement of the coloured complex at a wavelength of about 510 nm. Applies ISO Recommendation R 1694-1970.
Edition
1
Published Date
1976-09-01
Status
PUBLISHED
Pages
5
Language
English
Format
Secure PDF
Secure – PDF details
- Save your file locally or view it via a web viewer
- Viewing permissions are restricted exclusively to the purchaser
- Device limits - 3
- Printing – Enabled only to print (1) copy
See more about our Environmental Commitment
Abstract
Applies for the determination of natural and synthetic materials having a molar ratio sodium fluoride/aluminium trifluoride between 3 and 1,7 approximately. The method is applicable to products having an iron content equal to or greater than 0,020 % (m/m). The principle consists in dissolution of a test portion by either alkaline or acid fusion. Reduction of iron(III) with hydroxylammonium chloride, formation of the complex iron(II)-1, 10-phenathroline in a buffered medium at pH value between 3,5 and 4,2. Photometric measurement of the coloured complex at a wavelength of about 510 nm. Applies ISO Recommendation R 1694-1970.
Previous Editions
Can’t find what you are looking for?
Please contact us at:
Related Documents
-
ISO 2479:1972 Sodium chloride for industrial use – Determination of matter insoluble in water or in acid and preparation of principal solutions for other determinations
CDN $85.00 Add to cart -
ISO 2460:1973 Sodium hydrogen carbonate for industrial use – Determination of iron content – 1,10- Phenanthroline photometric method
CDN $85.00 Add to cart -
ISO 2830:1973 Cryolite, natural and artificial – Determination of aluminium content – Atomic absorption method
CDN $85.00 Add to cart -
ISO 3393:1976 Cryolite, natural and artificial, and aluminium fluoride for industrial use – Determination of moisture content – Gravimetric method
CDN $85.00 Add to cart
