Norm

ISO 10702:1993 en

Steel and iron - Determination of nitrogen content - Titrimetric method after distillation

48,19

Over deze norm

Status Definitief
Aantal pagina's 9
Commissie Chemische analyse van ijzer en staal
Gepubliceerd op 24-06-1993
Taal Engels
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.

Details

ICS-code 77.080.01
Nederlandse titel Steel and iron - Determination of nitrogen content - Titrimetric method after distillation
Engelse titel Steel and iron - Determination of nitrogen content - Titrimetric method after distillation

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