ISO 983:1974 PDF
Sodium hydroxide for industrial use — Determination of iron content — 1,10- Phenanthroline photometric method
Title (English):
ISO 983:1974
Sodium hydroxide for industrial use — Determination of iron content — 1,10- Phenanthroline photometric method
- Document status:
- Withdrawn
- Format:
- Electronic (PDF)
- Number of pages:
- 2
- Publication date:
- December 1, 1974
- Edition:
- ISO IS 983 edition 1 version 1
- ICS:
- 71.060.40
Description (English):
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.
Technical details
- Technical committee
- ISO/TC 47 - Chemistry
- SKU
- ISO 983:1974
