ISO 908:1980
Hydrochloric acid for industrial use; Determination of oxidizing or reducing substances content; Titrimetric method
- Standard No.
- ISO 908:1980
- Release Date
- 1980
- Published By
- International Organization for Standardization (ISO)
- Status
- 2002-05
- Latest
- ISO 908:1980
- Scope
- The method is applicable to products having oxidizing or reducing matter contents equal to or greater than 0.001 % (m/m). The principle is based on detection of the presence of these matter by a preliminary qualitative test. In the case of oxidizing matter adding of potassium iodide solution and titration of the liberated iodine with sodium thiosulphate standard volumetric solution until the blue colour disappears. In the case of reducing matter transferring of the test portion to an exactly measured volume of iodine solution and titration of the excess of iodine with the sodium thiosulphate standard volumetric solution. - Cancels and replaces ISO Recommendation R 908-1968.
ISO 908:1980 history
- 1980 ISO 908:1980 Hydrochloric acid for industrial use; Determination of oxidizing or reducing substances content; Titrimetric method
