ISO 983:1974 PDF
Original price was: $65.00.$50.70Current price is: $50.70.
Sodium hydroxide for industrial use — Determination of iron content — 1,10- Phenanthroline photometric method
Specifies a method that is more sensitive and more widely used than the 2,2′-bipyridyl method. It is applicable to products having iron contents equal to or greater than 0.5 mg/kg. The principle is based on the reduction of trivalent iron by hydroxylammonium chloride, formation of a bivalent iron/1,10-phenanthroline complex in a buffered system. Photometric measurement of the coloured complex at a wavelength of about 510 nm. This method has also been approved by the IUPAC. – Cancels and replaces ISO Recommendation R 983-1969.
| Edition | 1974 |
|---|---|
| Published Date | 1974 |
| Published By | International Standardization Organisation |
| Page Count | 2 |
