ISO 4276:1978
Anhydrous ammonia for industrial use; Evaluation of residue on evaporation; Gravimetric method
- Standard No.
- ISO 4276:1978
- Release Date
- 1978
- Published By
- International Organization for Standardization (ISO)
- Status
- 2002-05
- Latest
- ISO 4276:1978
- Scope
- Applicable to products having a residue of equal to or more than 0.02 % (m/m). For products obtained in modern plants this evaluation is not usually required. Indicates to the risk in handling with this product. Analysis by evaporation, at ambient temperature, of a test portion and weighing of the residue. Titration of the ammonia contained in the residue with standard volumetric sulphuric acid solution in the presence of an indicator. Subtraction of this mass from that of the redidue. A typical apparatus for the test is shown in a figure.
ISO 4276:1978 history
- 1978 ISO 4276:1978 Anhydrous ammonia for industrial use; Evaluation of residue on evaporation; Gravimetric method
