ISO 10702:1993
Steel and iron — Determination of nitrogen content — Titrimetric method after distillation
OVERVIEW
The principle of the method specified is dissolving a test portion in hydrochloric acid followed by oxidation with hydrogen peroxide, fuming of the acid-insoluble residue in sulfuric acid with potassium sulfate and copper(II) sulfate, distilling the solution made alkaline with sodium hydroxide, collecting ammonia in a receiver containing orthoboric acid solution, titration of the ammonium ion with amidosulfuric acid. Is applicable to nitrogen contents from 0,002 % (m/m) to 0,5 % (m/m); does not apply to samples containing silicon nitride.
COMMENTS
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PRODUCT DETAILS
| Status | Current |
|---|---|
| Edition | 1993 |
| No. of Pages | 9 |
| ICS Classification | 77.080.01 Ferrous metals in general |
| Committee | ISO/TC 17/SC 1 |
| Available for Purchase | For sale in Singapore only |
| Adoption | ISO |